package handler

import (
	"context"
	"encoding/json"
	"fmt"
	"net/http"
	"strconv"
	"strings"
	"time"

	"soul-api/internal/cache"
	"soul-api/internal/config"
	"soul-api/internal/database"
	"soul-api/internal/model"

	"github.com/gin-gonic/gin"
)

// parseConfigBool 将 JSON/map 中可能出现的 bool、字符串、数字归一为开关态（auditMode 等）
func parseConfigBool(v interface{}) bool {
	if v == nil {
		return false
	}
	switch t := v.(type) {
	case bool:
		return t
	case string:
		s := strings.ToLower(strings.TrimSpace(t))
		return s == "1" || s == "true" || s == "yes" || s == "on"
	case float64:
		return t != 0
	case int:
		return t != 0
	case int64:
		return t != 0
	case json.Number:
		if i, err := t.Int64(); err == nil {
			return i != 0
		}
		if f, err := t.Float64(); err == nil {
			return f != 0
		}
		return false
	default:
		return false
	}
}

// isLikelyWxMiniProgramAppID 判断是否为微信小程序 AppID 常见形态：wx + 16 位十六进制（共 18 字符）。
// 后台「链接标签」若 type=miniprogram 且在此列直接填真实 AppID，C 端会把该值当作 mpKey 去 linkedMiniprograms 里匹配 key；
// 若未单独配置 linked_miniprograms，会提示「未找到关联小程序配置」。mergeDirectMiniProgramLinksFromLinkTags 会据此自动补全映射。
func isLikelyWxMiniProgramAppID(s string) bool {
	s = strings.TrimSpace(s)
	if len(s) != 18 || !strings.HasPrefix(s, "wx") {
		return false
	}
	for i := 2; i < len(s); i++ {
		c := s[i]
		if (c >= '0' && c <= '9') || (c >= 'a' && c <= 'f') || (c >= 'A' && c <= 'F') {
			continue
		}
		return false
	}
	return true
}

func linkedMiniprogramItemKey(item gin.H) string {
	if v, ok := item["key"]; ok && v != nil {
		if s, ok := v.(string); ok {
			return strings.TrimSpace(s)
		}
	}
	return ""
}

func linkedMiniprogramItemAppIDEmpty(item gin.H) bool {
	v, ok := item["appId"]
	if !ok || v == nil {
		return true
	}
	s, ok := v.(string)
	return !ok || strings.TrimSpace(s) == ""
}

func linkedMiniprogramItemPathEmpty(item gin.H) bool {
	v, ok := item["path"]
	if !ok || v == nil {
		return true
	}
	s, ok := v.(string)
	return !ok || strings.TrimSpace(s) == ""
}

// mergeDirectMiniProgramLinksFromLinkTags 将「直接填写微信 AppID」的链接标签并入 linkedMiniprograms，兼容现有小程序 navigateToMiniProgram 查表逻辑（不改 C 端）。
func mergeDirectMiniProgramLinksFromLinkTags(linked *[]gin.H, tags []model.LinkTag) {
	if linked == nil {
		return
	}
	byKey := make(map[string]int)
	for i := range *linked {
		k := linkedMiniprogramItemKey((*linked)[i])
		if k != "" {
			byKey[k] = i
		}
	}
	for _, t := range tags {
		if strings.TrimSpace(strings.ToLower(t.Type)) != "miniprogram" {
			continue
		}
		app := strings.TrimSpace(t.AppID)
		if app == "" || !isLikelyWxMiniProgramAppID(app) {
			continue
		}
		path := strings.TrimSpace(t.PagePath)
		if idx, ok := byKey[app]; ok {
			item := (*linked)[idx]
			if linkedMiniprogramItemAppIDEmpty(item) {
				item["appId"] = app
			}
			if path != "" && linkedMiniprogramItemPathEmpty(item) {
				item["path"] = path
			}
			(*linked)[idx] = item
			continue
		}
		entry := gin.H{"key": app, "appId": app}
		if path != "" {
			entry["path"] = path
		}
		*linked = append(*linked, entry)
		byKey[app] = len(*linked) - 1
	}
}

// defaultMpUi 小程序文案与导航默认值，存于 mp_config.mpUi；管理端系统设置可部分覆盖（深合并）
func defaultMpUi() gin.H {
	return gin.H{
		"tabBar": gin.H{
			"home": "首页", "chapters": "目录", "match": "找伙伴", "my": "我的",
		},
		"chaptersPage": gin.H{
			"bookTitle":    "一场SOUL的创业实验场",
			"bookSubtitle": "来自Soul派对房的真实商业故事",
		},
		"homePage": gin.H{
			"logoTitle": "卡若创业派对", "logoSubtitle": "来自派对房的真实故事",
			"linkKaruoText": "点击链接卡若", "linkKaruoAvatar": "",
			"searchPlaceholder": "搜索章节标题或内容...",
			"bannerTag": "推荐", "bannerReadMoreText": "点击阅读",
			"superSectionTitle": "超级个体", "superSectionLinkText": "获客入口",
			"superSectionLinkPath": "/pages/match/match",
			"pickSectionTitle": "精选推荐",
			"latestSectionTitle": "最新新增",
		},
		"myPage": gin.H{
			"cardLabel": "名片", "vipLabelVip": "会员中心", "vipLabelGuest": "成为会员",
			"cardPath": "", "vipPath": "/pages/vip/vip",
			"readStatLabel": "已读章节", "recentReadTitle": "最近阅读",
			"readStatPath": "/pages/reading-records/reading-records?focus=all",
			"recentReadPath": "/pages/reading-records/reading-records?focus=recent",
		},
	}
}

func asStringMap(v interface{}) map[string]interface{} {
	if v == nil {
		return map[string]interface{}{}
	}
	m, ok := v.(map[string]interface{})
	if !ok {
		return map[string]interface{}{}
	}
	return m
}

// deepMergeMpUi 将 DB 中的 mpUi 与默认值深合并（嵌套 map）
func deepMergeMpUi(base gin.H, overRaw interface{}) gin.H {
	over := asStringMap(overRaw)
	out := gin.H{}
	for k, v := range base {
		out[k] = v
	}
	for k, v := range over {
		if v == nil {
			continue
		}
		bv := out[k]
		vm := asStringMap(v)
		if len(vm) == 0 && v != nil {
			// 非 map 覆盖
			out[k] = v
			continue
		}
		if len(vm) > 0 {
			bm := asStringMap(bv)
			if len(bm) == 0 {
				out[k] = deepMergeMpUi(gin.H{}, vm)
			} else {
				sub := gin.H{}
				for sk, sv := range bm {
					sub[sk] = sv
				}
				out[k] = deepMergeMpUi(sub, vm)
			}
		}
	}
	return out
}

// buildMiniprogramConfig 从 DB 构建小程序配置，供 GetPublicDBConfig 与 WarmConfigCache 复用
func buildMiniprogramConfig() gin.H {
	defaultPrices := gin.H{"section": float64(1), "fullbook": 9.9}
	defaultFeatures := gin.H{"matchEnabled": true, "referralEnabled": true, "searchEnabled": true}
	apiDomain := "https://soulapi.quwanzhi.com"
	if cfg := config.Get(); cfg != nil && cfg.BaseURL != "" {
		apiDomain = cfg.BaseURL
	}
	defaultMp := gin.H{
		"appId":                   "wxb8bbb2b10dec74aa",
		"apiDomain":               apiDomain,
		"buyerDiscount":           5,
		"referralBindDays":        30,
		"minWithdraw":             10,
		"withdrawSubscribeTmplId": "u3MbZGPRkrZIk-I7QdpwzFxnO_CeQPaCWF2FkiIablE",
		"mchId":                   "1318592501",
		"auditMode":               false,
		"supportWechat":           true,
		"shareIcon":               "", // 分享图标URL，由管理端配置
		"mpUi":                    defaultMpUi(),
	}

	out := gin.H{
		"success":  true,
		"prices":   defaultPrices,
		"features": defaultFeatures,
		"mpConfig": defaultMp,
		"configs":  gin.H{},
	}
	db := database.DB()

	keys := []string{"chapter_config", "feature_config", "mp_config"}
	for _, k := range keys {
		var row model.SystemConfig
		if err := db.Where("config_key = ?", k).First(&row).Error; err != nil {
			continue
		}
		var val interface{}
		if err := json.Unmarshal(row.ConfigValue, &val); err != nil {
			continue
		}
		switch k {
		case "chapter_config":
			if m, ok := val.(map[string]interface{}); ok {
				if v, ok := m["prices"].(map[string]interface{}); ok {
					out["prices"] = v
				}
				if v, ok := m["features"].(map[string]interface{}); ok {
					out["features"] = v
				}
				out["configs"].(gin.H)["chapter_config"] = m
			}
		case "feature_config":
			if m, ok := val.(map[string]interface{}); ok {
				// 合并到 features，不整体覆盖以保留 chapter_config 里的
				cur := out["features"].(gin.H)
				for kk, vv := range m {
					cur[kk] = vv
				}
				out["configs"].(gin.H)["feature_config"] = m
			}
		case "mp_config":
			if m, ok := val.(map[string]interface{}); ok {
				// 合并默认值，DB 有则覆盖
				merged := make(gin.H)
				for k, v := range defaultMp {
					merged[k] = v
				}
				for k, v := range m {
					merged[k] = v
				}
				merged["mpUi"] = deepMergeMpUi(defaultMpUi(), m["mpUi"])
				out["mpConfig"] = merged
				out["configs"].(gin.H)["mp_config"] = merged
			}
		}
	}
	// 价格：以管理端「站点与作者」site_settings 为准（运营唯一配置入口），无则用 chapter_config 或默认值
	var siteRow model.SystemConfig
	if err := db.Where("config_key = ?", "site_settings").First(&siteRow).Error; err == nil && len(siteRow.ConfigValue) > 0 {
		var siteVal map[string]interface{}
		if err := json.Unmarshal(siteRow.ConfigValue, &siteVal); err == nil {
			cur := out["prices"].(gin.H)
			if v, ok := siteVal["sectionPrice"].(float64); ok && v > 0 {
				cur["section"] = v
			}
			if v, ok := siteVal["baseBookPrice"].(float64); ok && v > 0 {
				cur["fullbook"] = v
			}
		}
	}
	// 好友优惠（用于 read 页展示优惠价）
	var refRow model.SystemConfig
	if err := db.Where("config_key = ?", "referral_config").First(&refRow).Error; err == nil {
		var refVal map[string]interface{}
		if err := json.Unmarshal(refRow.ConfigValue, &refVal); err == nil {
			if v, ok := refVal["userDiscount"].(float64); ok {
				out["userDiscount"] = v
			}
		}
	}
	if _, has := out["userDiscount"]; !has {
		out["userDiscount"] = float64(5)
	}
	// 链接标签列表（小程序 onLinkTagTap：miniprogram 类型下发 mpKey=C 端用其匹配 linkedMiniprograms[].key；历史设计为「密钥→appId」，现支持 app_id 列直接填微信 AppID 并由下方 merge 自动补 linkedMiniprograms）
	var linkTagRows []model.LinkTag
	_ = db.Order("label ASC").Find(&linkTagRows).Error
	tags := make([]gin.H, 0, len(linkTagRows))
	for _, t := range linkTagRows {
		h := gin.H{"tagId": t.TagID, "label": t.Label, "url": t.URL, "type": t.Type, "pagePath": t.PagePath}
		if t.Type == "miniprogram" {
			h["mpKey"] = t.AppID // 可为「关联表 key」或「直接 wx AppID」；后者由 mergeDirectMiniProgramLinksFromLinkTags 补全 linkedMiniprograms
		} else {
			h["appId"] = t.AppID
		}
		tags = append(tags, h)
	}
	out["linkTags"] = tags

	// 关联小程序列表（小程序：find(m => m.key === mpKey) → navigateToMiniProgram）
	var linkedList []gin.H
	var linkedMpRow model.SystemConfig
	if err := db.Where("config_key = ?", "linked_miniprograms").First(&linkedMpRow).Error; err == nil && len(linkedMpRow.ConfigValue) > 0 {
		if err := json.Unmarshal(linkedMpRow.ConfigValue, &linkedList); err != nil {
			linkedList = nil
		}
	}
	if linkedList == nil {
		linkedList = []gin.H{}
	}
	mergeDirectMiniProgramLinksFromLinkTags(&linkedList, linkTagRows)
	out["linkedMiniprograms"] = linkedList
	// 归一化 auditMode（兼容历史 bool / 字符串 / 数字）
	if mp, ok := out["mpConfig"].(gin.H); ok {
		mp["auditMode"] = parseConfigBool(mp["auditMode"])
	}
	return out
}

// GetPublicDBConfig GET /api/miniprogram/config 公开接口，供小程序获取完整配置（与 next-project 对齐）
// Redis 缓存 10min，配置变更时失效
//
// Deprecated: 计划迁移至 /config/core + /config/audit-mode + /config/read-extras，保留以兼容线上小程序
func GetPublicDBConfig(c *gin.Context) {
	var cached map[string]interface{}
	if cache.Get(context.Background(), cache.KeyConfigMiniprogram, &cached) && len(cached) > 0 {
		c.JSON(http.StatusOK, cached)
		return
	}
	out := buildMiniprogramConfig()
	cache.Set(context.Background(), cache.KeyConfigMiniprogram, out, cache.ConfigTTL)
	c.JSON(http.StatusOK, out)
}

// GetAuditMode GET /api/miniprogram/config/audit-mode 审核模式独立接口，管理端开关后快速生效
// 缓存未命中时仅查 mp_config 一条记录，避免 buildMiniprogramConfig 全量查询导致超时
// Redis 不可用时 cache 包自动降级到内存备用
func GetAuditMode(c *gin.Context) {
	var cached gin.H
	if cache.Get(context.Background(), cache.KeyConfigAuditMode, &cached) && len(cached) > 0 {
		c.JSON(http.StatusOK, cached)
		return
	}
	auditMode := getAuditModeFromDB()
	out := gin.H{"auditMode": auditMode}
	cache.Set(context.Background(), cache.KeyConfigAuditMode, out, cache.AuditModeTTL)
	c.JSON(http.StatusOK, out)
}

// getAuditModeFromDB 仅查询 mp_config 的 auditMode，轻量级避免超时
func getAuditModeFromDB() bool {
	var row model.SystemConfig
	if err := database.DB().Where("config_key = ?", "mp_config").First(&row).Error; err != nil {
		return false
	}
	var mp map[string]interface{}
	if err := json.Unmarshal(row.ConfigValue, &mp); err != nil {
		return false
	}
	return parseConfigBool(mp["auditMode"])
}

// GetCoreConfig GET /api/miniprogram/config/core 核心配置（prices、features、userDiscount、mpConfig），首屏/Tab 用
func GetCoreConfig(c *gin.Context) {
	var cached gin.H
	if cache.Get(context.Background(), cache.KeyConfigCore, &cached) && len(cached) > 0 {
		c.JSON(http.StatusOK, cached)
		return
	}
	full := buildMiniprogramConfig()
	out := gin.H{
		"success":      true,
		"prices":       full["prices"],
		"features":     full["features"],
		"userDiscount": full["userDiscount"],
		"mpConfig":     full["mpConfig"],
	}
	if out["prices"] == nil {
		out["prices"] = gin.H{"section": float64(1), "fullbook": 9.9}
	}
	if out["features"] == nil {
		out["features"] = gin.H{"matchEnabled": true, "referralEnabled": true, "searchEnabled": true}
	}
	if out["userDiscount"] == nil {
		out["userDiscount"] = float64(5)
	}
	if out["mpConfig"] == nil {
		out["mpConfig"] = gin.H{}
	}
	cache.Set(context.Background(), cache.KeyConfigCore, out, cache.ConfigTTL)
	c.JSON(http.StatusOK, out)
}

// buildMentionPersonsForRead 阅读页 @ 自动解析用：与后台 persons 表一致（含 name/label/aliases/token）。
// inPool=true 表示已绑定会员 user_id（超级个体/可进匹配流量池），仍参与 @ 匹配以便正文与后台人物库对齐。
func buildMentionPersonsForRead() []gin.H {
	db := database.DB()
	var rows []model.Person
	if err := db.Select("person_id", "token", "name", "aliases", "label", "user_id").
		Where("token IS NOT NULL AND token != ?", "").
		Order("name ASC").
		Find(&rows).Error; err != nil {
		return []gin.H{}
	}
	out := make([]gin.H, 0, len(rows))
	for _, p := range rows {
		inPool := p.UserID != nil && strings.TrimSpace(*p.UserID) != ""
		out = append(out, gin.H{
			"personId": p.PersonID,
			"token":    p.Token,
			"name":     strings.TrimSpace(p.Name),
			"aliases":  strings.TrimSpace(p.Aliases),
			"label":    strings.TrimSpace(p.Label),
			"inPool":   inPool,
		})
	}
	return out
}

// GetReadExtras GET /api/miniprogram/config/read-extras 阅读页扩展（linkTags、linkedMiniprograms、mentionPersons），懒加载
func GetReadExtras(c *gin.Context) {
	var cached gin.H
	if cache.Get(context.Background(), cache.KeyConfigReadExtras, &cached) && len(cached) > 0 {
		c.JSON(http.StatusOK, cached)
		return
	}
	full := buildMiniprogramConfig()
	out := gin.H{
		"linkTags":           full["linkTags"],
		"linkedMiniprograms": full["linkedMiniprograms"],
		"mentionPersons":     buildMentionPersonsForRead(),
	}
	if out["linkTags"] == nil {
		out["linkTags"] = []gin.H{}
	}
	if out["linkedMiniprograms"] == nil {
		out["linkedMiniprograms"] = []gin.H{}
	}
	if out["mentionPersons"] == nil {
		out["mentionPersons"] = []gin.H{}
	}
	cache.Set(context.Background(), cache.KeyConfigReadExtras, out, cache.ConfigTTL)
	c.JSON(http.StatusOK, out)
}

// WarmConfigCache 启动时预热 config 及拆分接口缓存，避免首请求冷启动
func WarmConfigCache() {
	out := buildMiniprogramConfig()
	cache.Set(context.Background(), cache.KeyConfigMiniprogram, out, cache.ConfigTTL)
	// 拆分接口预热
	auditMode := false
	if mp, ok := out["mpConfig"].(gin.H); ok {
		auditMode = parseConfigBool(mp["auditMode"])
	}
	cache.Set(context.Background(), cache.KeyConfigAuditMode, gin.H{"auditMode": auditMode}, cache.AuditModeTTL)
	core := gin.H{
		"success":      true,
		"prices":       out["prices"],
		"features":     out["features"],
		"userDiscount": out["userDiscount"],
		"mpConfig":     out["mpConfig"],
	}
	if core["prices"] == nil {
		core["prices"] = gin.H{"section": float64(1), "fullbook": 9.9}
	}
	if core["features"] == nil {
		core["features"] = gin.H{"matchEnabled": true, "referralEnabled": true, "searchEnabled": true}
	}
	if core["userDiscount"] == nil {
		core["userDiscount"] = float64(5)
	}
	if core["mpConfig"] == nil {
		core["mpConfig"] = gin.H{}
	}
	cache.Set(context.Background(), cache.KeyConfigCore, core, cache.ConfigTTL)
	readExtras := gin.H{
		"linkTags":           out["linkTags"],
		"linkedMiniprograms": out["linkedMiniprograms"],
		"mentionPersons":     buildMentionPersonsForRead(),
	}
	if readExtras["linkTags"] == nil {
		readExtras["linkTags"] = []gin.H{}
	}
	if readExtras["linkedMiniprograms"] == nil {
		readExtras["linkedMiniprograms"] = []gin.H{}
	}
	if readExtras["mentionPersons"] == nil {
		readExtras["mentionPersons"] = []gin.H{}
	}
	cache.Set(context.Background(), cache.KeyConfigReadExtras, readExtras, cache.ConfigTTL)
}

// DBConfigGet GET /api/db/config（管理端鉴权后同路径由 db 组处理时用）
func DBConfigGet(c *gin.Context) {
	key := c.Query("key")
	db := database.DB()
	var list []model.SystemConfig
	q := db.Table("system_config")
	if key != "" {
		q = q.Where("config_key = ?", key)
	}
	if err := q.Find(&list).Error; err != nil {
		c.JSON(http.StatusOK, gin.H{"success": false, "error": err.Error()})
		return
	}
	if key != "" && len(list) == 1 {
		var val interface{}
		_ = json.Unmarshal(list[0].ConfigValue, &val)
		c.JSON(http.StatusOK, gin.H{"success": true, "data": val})
		return
	}
	data := make([]gin.H, 0, len(list))
	for _, row := range list {
		var val interface{}
		_ = json.Unmarshal(row.ConfigValue, &val)
		data = append(data, gin.H{"configKey": row.ConfigKey, "configValue": val})
	}
	c.JSON(http.StatusOK, gin.H{"success": true, "data": data})
}

// AdminSettingsGet GET /api/admin/settings 系统设置页专用：仅返回功能开关、站点/作者与价格、小程序配置
func AdminSettingsGet(c *gin.Context) {
	db := database.DB()
	apiDomain := "https://soulapi.quwanzhi.com"
	if cfg := config.Get(); cfg != nil && cfg.BaseURL != "" {
		apiDomain = cfg.BaseURL
	}
	defaultMp := gin.H{
		"appId":                   "wxb8bbb2b10dec74aa",
		"apiDomain":               apiDomain,
		"withdrawSubscribeTmplId": "u3MbZGPRkrZIk-I7QdpwzFxnO_CeQPaCWF2FkiIablE",
		"mchId":                   "1318592501",
		"minWithdraw":             float64(10),
		"auditMode":               false,
		"supportWechat":           true,
		"mpUi":                    defaultMpUi(),
	}
	out := gin.H{
		"success":       true,
		"featureConfig": gin.H{"matchEnabled": true, "referralEnabled": true, "searchEnabled": true, "aboutEnabled": true},
		"siteSettings":  gin.H{"sectionPrice": float64(1), "baseBookPrice": 9.9, "distributorShare": float64(90), "authorInfo": gin.H{}},
		"mpConfig":      defaultMp,
		"ossConfig":     gin.H{},
	}
	keys := []string{"feature_config", "site_settings", "mp_config", "oss_config"}
	for _, k := range keys {
		var row model.SystemConfig
		if err := db.Where("config_key = ?", k).First(&row).Error; err != nil {
			continue
		}
		var val interface{}
		if err := json.Unmarshal(row.ConfigValue, &val); err != nil {
			continue
		}
		switch k {
		case "feature_config":
			if m, ok := val.(map[string]interface{}); ok && len(m) > 0 {
				out["featureConfig"] = m
			}
		case "site_settings":
			if m, ok := val.(map[string]interface{}); ok && len(m) > 0 {
				out["siteSettings"] = m
			}
		case "mp_config":
			if m, ok := val.(map[string]interface{}); ok {
				merged := make(gin.H)
				for k, v := range defaultMp {
					merged[k] = v
				}
				for k, v := range m {
					merged[k] = v
				}
				merged["mpUi"] = deepMergeMpUi(defaultMpUi(), m["mpUi"])
				out["mpConfig"] = merged
			}
		case "oss_config":
			if m, ok := val.(map[string]interface{}); ok {
				safe := make(map[string]interface{})
				for k, v := range m {
					if k == "accessKeySecret" {
						safe[k] = "****"
					} else {
						safe[k] = v
					}
				}
				out["ossConfig"] = safe
			}
		}
	}
	c.JSON(http.StatusOK, out)
}

// AdminSettingsPost POST /api/admin/settings 系统设置页专用：一次性保存功能开关、站点/作者与价格、小程序配置
func AdminSettingsPost(c *gin.Context) {
	var body struct {
		FeatureConfig map[string]interface{} `json:"featureConfig"`
		SiteSettings  map[string]interface{} `json:"siteSettings"`
		MpConfig      map[string]interface{} `json:"mpConfig"`
		OssConfig     map[string]interface{} `json:"ossConfig"`
	}
	if err := c.ShouldBindJSON(&body); err != nil {
		c.JSON(http.StatusOK, gin.H{"success": false, "error": "请求体无效"})
		return
	}
	db := database.DB()
	saveKey := func(key, desc string, value interface{}) error {
		valBytes, err := json.Marshal(value)
		if err != nil {
			return err
		}
		var row model.SystemConfig
		err = db.Where("config_key = ?", key).First(&row).Error
		if err != nil {
			row = model.SystemConfig{ConfigKey: key, ConfigValue: valBytes, Description: &desc}
			return db.Create(&row).Error
		}
		row.ConfigValue = valBytes
		if desc != "" {
			row.Description = &desc
		}
		return db.Save(&row).Error
	}
	if body.FeatureConfig != nil {
		if err := saveKey("feature_config", "功能开关配置", body.FeatureConfig); err != nil {
			c.JSON(http.StatusOK, gin.H{"success": false, "error": "保存功能开关失败: " + err.Error()})
			return
		}
	}
	if body.SiteSettings != nil {
		if err := saveKey("site_settings", "站点与作者配置", body.SiteSettings); err != nil {
			c.JSON(http.StatusOK, gin.H{"success": false, "error": "保存站点设置失败: " + err.Error()})
			return
		}
	}
	if body.MpConfig != nil {
		if err := saveKey("mp_config", "小程序专用配置", body.MpConfig); err != nil {
			c.JSON(http.StatusOK, gin.H{"success": false, "error": "保存小程序配置失败: " + err.Error()})
			return
		}
	}
	if body.OssConfig != nil {
		if err := saveKey("oss_config", "阿里云 OSS 配置", body.OssConfig); err != nil {
			c.JSON(http.StatusOK, gin.H{"success": false, "error": "保存 OSS 配置失败: " + err.Error()})
			return
		}
	}
	cache.InvalidateConfig()
	c.JSON(http.StatusOK, gin.H{"success": true, "message": "设置已保存"})
}

// AdminReferralSettingsGet GET /api/admin/referral-settings 推广设置页专用：仅返回 referral_config
func AdminReferralSettingsGet(c *gin.Context) {
	db := database.DB()
	defaultConfig := gin.H{
		"distributorShare":    float64(90),
		"minWithdrawAmount":   float64(10),
		"bindingDays":         float64(30),
		"userDiscount":        float64(5),
		"withdrawFee":         float64(5),
		"enableAutoWithdraw":  false,
		"vipOrderShareVip":    float64(20),
		"vipOrderShareNonVip": float64(10),
	}
	var row model.SystemConfig
	if err := db.Where("config_key = ?", "referral_config").First(&row).Error; err != nil {
		c.JSON(http.StatusOK, gin.H{"success": true, "data": defaultConfig})
		return
	}
	var val map[string]interface{}
	if err := json.Unmarshal(row.ConfigValue, &val); err != nil || len(val) == 0 {
		c.JSON(http.StatusOK, gin.H{"success": true, "data": defaultConfig})
		return
	}
	c.JSON(http.StatusOK, gin.H{"success": true, "data": val})
}

// AdminReferralSettingsPost POST /api/admin/referral-settings 推广设置页专用：仅保存 referral_config（请求体为完整配置对象）
func AdminReferralSettingsPost(c *gin.Context) {
	var body struct {
		DistributorShare    float64 `json:"distributorShare"`
		MinWithdrawAmount   float64 `json:"minWithdrawAmount"`
		BindingDays         float64 `json:"bindingDays"`
		UserDiscount        float64 `json:"userDiscount"`
		WithdrawFee         float64 `json:"withdrawFee"`
		EnableAutoWithdraw  bool    `json:"enableAutoWithdraw"`
		VipOrderShareVip    float64 `json:"vipOrderShareVip"`
		VipOrderShareNonVip float64 `json:"vipOrderShareNonVip"`
	}
	if err := c.ShouldBindJSON(&body); err != nil {
		c.JSON(http.StatusOK, gin.H{"success": false, "error": "请求体无效"})
		return
	}
	vipOrderShareVip := body.VipOrderShareVip
	if vipOrderShareVip == 0 {
		vipOrderShareVip = 20
	}
	vipOrderShareNonVip := body.VipOrderShareNonVip
	if vipOrderShareNonVip == 0 {
		vipOrderShareNonVip = 10
	}
	val := gin.H{
		"distributorShare":    body.DistributorShare,
		"minWithdrawAmount":   body.MinWithdrawAmount,
		"bindingDays":         body.BindingDays,
		"userDiscount":        body.UserDiscount,
		"withdrawFee":         body.WithdrawFee,
		"enableAutoWithdraw":  body.EnableAutoWithdraw,
		"vipOrderShareVip":    vipOrderShareVip,
		"vipOrderShareNonVip": vipOrderShareNonVip,
	}
	valBytes, err := json.Marshal(val)
	if err != nil {
		c.JSON(http.StatusOK, gin.H{"success": false, "error": err.Error()})
		return
	}
	db := database.DB()
	desc := "分销 / 推广规则配置"
	var row model.SystemConfig
	if err := db.Where("config_key = ?", "referral_config").First(&row).Error; err != nil {
		row = model.SystemConfig{ConfigKey: "referral_config", ConfigValue: valBytes, Description: &desc}
		err = db.Create(&row).Error
	} else {
		row.ConfigValue = valBytes
		row.Description = &desc
		err = db.Save(&row).Error
	}
	if err != nil {
		c.JSON(http.StatusOK, gin.H{"success": false, "error": err.Error()})
		return
	}
	cache.InvalidateConfig()
	c.JSON(http.StatusOK, gin.H{"success": true, "message": "推广设置已保存"})
}

func authorConfigToResponse(row *model.AuthorConfig) gin.H {
	defaultStats := []gin.H{{"label": "商业案例", "value": "62"}, {"label": "连续直播", "value": "365天"}, {"label": "派对分享", "value": "1000+"}}
	defaultHighlights := []string{"5年私域运营经验", "帮助100+品牌从0到1增长", "连续创业者，擅长商业模式设计"}
	var stats []gin.H
	if row.Stats != "" {
		_ = json.Unmarshal([]byte(row.Stats), &stats)
	}
	if len(stats) == 0 {
		stats = defaultStats
	}
	var highlights []string
	if row.Highlights != "" {
		_ = json.Unmarshal([]byte(row.Highlights), &highlights)
	}
	if len(highlights) == 0 {
		highlights = defaultHighlights
	}
	return gin.H{
		"name":       row.Name,
		"avatar":     row.Avatar,
		"avatarImg":  row.AvatarImg,
		"title":      row.Title,
		"bio":        row.Bio,
		"stats":      stats,
		"highlights": highlights,
	}
}

// AdminAuthorSettingsGet GET /api/admin/author-settings 作者详情配置（管理端专用）
func AdminAuthorSettingsGet(c *gin.Context) {
	defaultAuthor := gin.H{
		"name":       "卡若",
		"avatar":     "K",
		"avatarImg":  "",
		"title":      "Soul派对房主理人 · 私域运营专家",
		"bio":        "每天早上6点到9点，在Soul派对房分享真实的创业故事。专注私域运营与项目变现，用云阿米巴模式帮助创业者构建可持续的商业体系。",
		"stats":      []gin.H{{"label": "商业案例", "value": "62"}, {"label": "连续直播", "value": "365天"}, {"label": "派对分享", "value": "1000+"}},
		"highlights": []string{"5年私域运营经验", "帮助100+品牌从0到1增长", "连续创业者，擅长商业模式设计"},
	}
	db := database.DB()
	var row model.AuthorConfig
	if err := db.First(&row).Error; err != nil {
		c.JSON(http.StatusOK, gin.H{"success": true, "data": defaultAuthor})
		return
	}
	c.JSON(http.StatusOK, gin.H{"success": true, "data": authorConfigToResponse(&row)})
}

// AdminAuthorSettingsPost POST /api/admin/author-settings 保存作者详情配置
func AdminAuthorSettingsPost(c *gin.Context) {
	var body map[string]interface{}
	if err := c.ShouldBindJSON(&body); err != nil {
		c.JSON(http.StatusOK, gin.H{"success": false, "error": "请求体无效"})
		return
	}
	str := func(k string) string {
		if v, ok := body[k]; ok && v != nil {
			if s, ok := v.(string); ok {
				return s
			}
			return fmt.Sprintf("%v", v)
		}
		return ""
	}
	name := str("name")
	if name == "" {
		name = "卡若"
	}
	avatar := str("avatar")
	if avatar == "" {
		avatar = "K"
	}
	statsVal := body["stats"]
	if statsVal == nil {
		statsVal = []gin.H{{"label": "商业案例", "value": "62"}, {"label": "连续直播", "value": "365天"}, {"label": "派对分享", "value": "1000+"}}
	}
	highlightsVal := body["highlights"]
	if highlightsVal == nil {
		highlightsVal = []string{}
	}
	statsBytes, _ := json.Marshal(statsVal)
	highlightsBytes, _ := json.Marshal(highlightsVal)

	db := database.DB()
	var row model.AuthorConfig
	err := db.First(&row).Error
	if err != nil {
		row = model.AuthorConfig{
			Name:       name,
			Avatar:     avatar,
			AvatarImg:  str("avatarImg"),
			Title:      str("title"),
			Bio:        str("bio"),
			Stats:      string(statsBytes),
			Highlights: string(highlightsBytes),
		}
		err = db.Create(&row).Error
	} else {
		row.Name = name
		row.Avatar = avatar
		row.AvatarImg = str("avatarImg")
		row.Title = str("title")
		row.Bio = str("bio")
		row.Stats = string(statsBytes)
		row.Highlights = string(highlightsBytes)
		err = db.Save(&row).Error
	}
	if err != nil {
		c.JSON(http.StatusOK, gin.H{"success": false, "error": err.Error()})
		return
	}
	c.JSON(http.StatusOK, gin.H{"success": true, "message": "作者设置已保存"})
}

// MiniprogramAboutAuthor GET /api/miniprogram/about/author 小程序-关于作者页拉取作者配置（公开，无需鉴权）
func MiniprogramAboutAuthor(c *gin.Context) {
	defaultAuthor := gin.H{
		"name":       "卡若",
		"avatar":     "K",
		"avatarImg":  "",
		"title":      "Soul派对房主理人 · 私域运营专家",
		"bio":        "每天早上6点到9点，在Soul派对房分享真实的创业故事。",
		"stats":      []gin.H{{"label": "商业案例", "value": "62"}, {"label": "连续直播", "value": "365天"}, {"label": "派对分享", "value": "1000+"}},
		"highlights": []string{"5年私域运营经验", "帮助100+品牌从0到1增长", "连续创业者，擅长商业模式设计"},
	}
	db := database.DB()
	var row model.AuthorConfig
	if err := db.First(&row).Error; err != nil {
		c.JSON(http.StatusOK, gin.H{"success": true, "data": defaultAuthor})
		return
	}
	c.JSON(http.StatusOK, gin.H{"success": true, "data": authorConfigToResponse(&row)})
}

// DBConfigPost POST /api/db/config
func DBConfigPost(c *gin.Context) {
	var body struct {
		Key         string      `json:"key"`
		Value       interface{} `json:"value"`
		Description string      `json:"description"`
	}
	if err := c.ShouldBindJSON(&body); err != nil || body.Key == "" {
		c.JSON(http.StatusOK, gin.H{"success": false, "error": "配置键不能为空"})
		return
	}
	valBytes, err := json.Marshal(body.Value)
	if err != nil {
		c.JSON(http.StatusOK, gin.H{"success": false, "error": err.Error()})
		return
	}
	db := database.DB()
	desc := body.Description
	var row model.SystemConfig
	err = db.Where("config_key = ?", body.Key).First(&row).Error
	if err != nil {
		row = model.SystemConfig{ConfigKey: body.Key, ConfigValue: valBytes, Description: &desc}
		err = db.Create(&row).Error
	} else {
		row.ConfigValue = valBytes
		if body.Description != "" {
			row.Description = &desc
		}
		err = db.Save(&row).Error
	}
	if err != nil {
		c.JSON(http.StatusOK, gin.H{"success": false, "error": err.Error()})
		return
	}
	cache.InvalidateConfig()
	c.JSON(http.StatusOK, gin.H{"success": true, "message": "配置保存成功"})
}

// DBUsersList GET /api/db/users（支持分页 page、pageSize，可选搜索 search；有 id 时返回单个 user；购买状态、分销收益、绑定人数从订单/绑定表实时计算）
func DBUsersList(c *gin.Context) {
	db := database.DB()
	id := strings.TrimSpace(c.Query("id"))
	page, _ := strconv.Atoi(c.DefaultQuery("page", "1"))
	pageSize, _ := strconv.Atoi(c.DefaultQuery("pageSize", "10"))
	search := strings.TrimSpace(c.DefaultQuery("search", ""))
	vipFilter := c.Query("vip")   // "true" 时仅返回 VIP（hasFullBook）
	poolFilter := c.Query("pool") // "complete" 时仅返回已完善资料的用户
	if page < 1 {
		page = 1
	}
	if pageSize < 1 || pageSize > 100 {
		pageSize = 10
	}

	// 有 id 时返回单个用户（供 UserDetailModal 等使用）
	if id != "" {
		var user model.User
		if err := db.Where("id = ?", id).First(&user).Error; err != nil {
			c.JSON(http.StatusOK, gin.H{"success": true, "user": nil})
			return
		}
		// 填充 hasFullBook（含 orders、is_vip、手动设置的 has_full_book）
		var cnt int64
		db.Model(&model.Order{}).Where("user_id = ? AND (status = ? OR status = ?) AND (product_type = ? OR product_type = ?)",
			id, "paid", "completed", "fullbook", "vip").Count(&cnt)
		hasFull := cnt > 0 || (user.IsVip != nil && *user.IsVip) || (user.HasFullBook != nil && *user.HasFullBook)
		user.HasFullBook = ptrBool(hasFull)
		c.JSON(http.StatusOK, gin.H{"success": true, "user": user})
		return
	}

	q := db.Model(&model.User{})
	if search != "" {
		pattern := "%" + search + "%"
		q = q.Where("COALESCE(nickname,'') LIKE ? OR COALESCE(phone,'') LIKE ? OR id LIKE ?", pattern, pattern, pattern)
	}
	if poolFilter == "complete" {
		q = q.Where("(phone IS NOT NULL AND phone != '') AND (nickname IS NOT NULL AND nickname != '' AND nickname != '微信用户') AND (avatar IS NOT NULL AND avatar != '')")
	} else if vipFilter == "true" || vipFilter == "1" {
		q = q.Where("id IN (SELECT user_id FROM orders WHERE product_type IN ? AND (status = ? OR status = ?)) OR (is_vip = 1 AND vip_expire_date > ?)",
			[]string{"fullbook", "vip"}, "paid", "completed", time.Now())
	}
	var total int64
	q.Count(&total)

	var users []model.User
	query := db.Model(&model.User{})
	if search != "" {
		pattern := "%" + search + "%"
		query = query.Where("COALESCE(nickname,'') LIKE ? OR COALESCE(phone,'') LIKE ? OR id LIKE ?", pattern, pattern, pattern)
	}
	if poolFilter == "complete" {
		query = query.Where("(phone IS NOT NULL AND phone != '') AND (nickname IS NOT NULL AND nickname != '' AND nickname != '微信用户') AND (avatar IS NOT NULL AND avatar != '')")
	} else if vipFilter == "true" || vipFilter == "1" {
		query = query.Where("id IN (SELECT user_id FROM orders WHERE product_type IN ? AND (status = ? OR status = ?)) OR (is_vip = 1 AND vip_expire_date > ?)",
			[]string{"fullbook", "vip"}, "paid", "completed", time.Now())
	}
	if err := query.Order("created_at DESC").
		Offset((page - 1) * pageSize).
		Limit(pageSize).
		Find(&users).Error; err != nil {
		c.JSON(http.StatusOK, gin.H{"success": false, "error": err.Error(), "users": []interface{}{}})
		return
	}
	totalPages := int(total) / pageSize
	if int(total)%pageSize > 0 {
		totalPages++
	}

	if len(users) == 0 {
		c.JSON(http.StatusOK, gin.H{
			"success": true, "users": users,
			"total": total, "page": page, "pageSize": pageSize, "totalPages": totalPages,
		})
		return
	}

	userIDs := make([]string, 0, len(users))
	for _, u := range users {
		userIDs = append(userIDs, u.ID)
	}

	// 1. 购买状态：全书已购、已付费章节数（从 orders 计算）
	hasFullBookMap := make(map[string]bool)
	sectionCountMap := make(map[string]int)
	var fullbookRows []struct {
		UserID string
	}
	db.Model(&model.Order{}).Select("user_id").Where("product_type IN ? AND status IN ?", []string{"fullbook", "vip"}, []string{"paid", "completed", "success"}).Find(&fullbookRows)
	for _, r := range fullbookRows {
		hasFullBookMap[r.UserID] = true
	}
	var sectionRows []struct {
		UserID string
		Count  int64
	}
	db.Model(&model.Order{}).Select("user_id, COUNT(*) as count").
		Where("product_type = ? AND status IN ?", "section", []string{"paid", "completed", "success"}).
		Group("user_id").Find(&sectionRows)
	for _, r := range sectionRows {
		sectionCountMap[r.UserID] = int(r.Count)
	}

	// 2. 分销收益：从 referrer 订单逐条 computeOrderCommission 求和（会员订单 20%/10%，内容订单 90%）
	referrerEarningsMap := make(map[string]float64)
	var referrerOrders []model.Order
	db.Where("referrer_id IS NOT NULL AND referrer_id != '' AND status = ?", "paid").Find(&referrerOrders)
	for i := range referrerOrders {
		rid := referrerOrders[i].ReferrerID
		if rid != nil && *rid != "" {
			referrerEarningsMap[*rid] += computeOrderCommission(db, &referrerOrders[i], nil)
		}
	}
	withdrawnMap := make(map[string]float64)
	var withdrawnRows []struct {
		UserID string
		Total  float64
	}
	db.Model(&model.Withdrawal{}).Select("user_id, COALESCE(SUM(amount), 0) as total").
		Where("status = ?", "success").
		Group("user_id").Find(&withdrawnRows)
	for _, r := range withdrawnRows {
		withdrawnMap[r.UserID] = r.Total
	}
	pendingWithdrawMap := make(map[string]float64)
	var pendingRows []struct {
		UserID string
		Total  float64
	}
	db.Model(&model.Withdrawal{}).Select("user_id, COALESCE(SUM(amount), 0) as total").
		Where("status IN ?", []string{"pending", "processing", "pending_confirm"}).
		Group("user_id").Find(&pendingRows)
	for _, r := range pendingRows {
		pendingWithdrawMap[r.UserID] = r.Total
	}

	// 3. 绑定人数：综合 referral_bindings + orders.referrer_id + users.referral_count 三源取最大值
	referralCountMap := make(map[string]int)
	var refCountRows []struct {
		ReferrerID string `gorm:"column:referrer_id"`
		Count      int64  `gorm:"column:count"`
	}
	db.Model(&model.ReferralBinding{}).Select("referrer_id, COUNT(*) as count").
		Group("referrer_id").Scan(&refCountRows)
	for _, r := range refCountRows {
		referralCountMap[r.ReferrerID] = int(r.Count)
	}
	var orderRefRows []struct {
		ReferrerID string `gorm:"column:referrer_id"`
		Count      int64  `gorm:"column:count"`
	}
	db.Model(&model.Order{}).Select("referrer_id, COUNT(DISTINCT user_id) as count").
		Where("referrer_id IS NOT NULL AND referrer_id != '' AND status = ?", "paid").
		Group("referrer_id").Scan(&orderRefRows)
	for _, r := range orderRefRows {
		if int(r.Count) > referralCountMap[r.ReferrerID] {
			referralCountMap[r.ReferrerID] = int(r.Count)
		}
	}

	// 4. RFM 实时打分：对当前页用户批量计算（只查当前页 userIDs 的聚合）
	type rfmAgg struct {
		UserID      string
		OrderCount  int
		TotalAmount float64
		LastOrderAt time.Time
	}
	var rfmAggs []rfmAgg
	db.Raw(`SELECT user_id, COUNT(*) as order_count, SUM(amount) as total_amount, MAX(created_at) as last_order_at
		FROM orders WHERE user_id IN ? AND status IN ('paid','success','completed')
		GROUP BY user_id`, userIDs).Scan(&rfmAggs)
	rfmAggMap := make(map[string]rfmAgg, len(rfmAggs))
	var rfmMaxRecency, rfmMaxFreq int
	var rfmMaxMonetary float64
	now := time.Now()
	for _, a := range rfmAggs {
		rfmAggMap[a.UserID] = a
		days := int(now.Sub(a.LastOrderAt).Hours() / 24)
		if days > rfmMaxRecency {
			rfmMaxRecency = days
		}
		if a.OrderCount > rfmMaxFreq {
			rfmMaxFreq = a.OrderCount
		}
		if a.TotalAmount > rfmMaxMonetary {
			rfmMaxMonetary = a.TotalAmount
		}
	}

	// 填充每个用户的实时计算字段
	for i := range users {
		uid := users[i].ID
		// 购买状态（含订单、is_vip、手动设置的 has_full_book）
		hasFull := hasFullBookMap[uid]
		if users[i].IsVip != nil && *users[i].IsVip && users[i].VipExpireDate != nil && users[i].VipExpireDate.After(time.Now()) {
			hasFull = true
		}
		if users[i].HasFullBook != nil && *users[i].HasFullBook {
			hasFull = true
		}
		users[i].HasFullBook = ptrBool(hasFull)
		users[i].PurchasedSectionCount = sectionCountMap[uid]
		// 分销收益
		totalE := referrerEarningsMap[uid]
		withdrawn := withdrawnMap[uid]
		pendingWd := pendingWithdrawMap[uid]
		available := totalE - withdrawn - pendingWd
		if available < 0 {
			available = 0
		}
		users[i].Earnings = ptrFloat64(totalE)
		users[i].PendingEarnings = ptrFloat64(available)
		bindCount := referralCountMap[uid]
		dbCount := 0
		if users[i].ReferralCount != nil {
			dbCount = *users[i].ReferralCount
		}
		if dbCount > bindCount {
			bindCount = dbCount
		}
		users[i].ReferralCount = ptrInt(bindCount)

		// RFM 打分（有订单的用户才有分数）
		if agg, ok := rfmAggMap[uid]; ok {
			recencyDays := int(now.Sub(agg.LastOrderAt).Hours() / 24)
			score := calcRFMScoreForUser(recencyDays, agg.OrderCount, agg.TotalAmount,
				rfmMaxRecency, rfmMaxFreq, rfmMaxMonetary)
			level := calcRFMLevel(score)
			users[i].RFMScore = ptrFloat64(score)
			users[i].RFMLevel = &level
		}
	}

	c.JSON(http.StatusOK, gin.H{
		"success": true, "users": users,
		"total": total, "page": page, "pageSize": pageSize, "totalPages": totalPages,
	})
}

func ptrBool(b bool) *bool          { return &b }
func ptrFloat64(f float64) *float64 { v := f; return &v }
func ptrInt(n int) *int             { return &n }

// DBUsersAction POST /api/db/users（创建）、PUT /api/db/users（更新）
func DBUsersAction(c *gin.Context) {
	db := database.DB()
	if c.Request.Method == http.MethodPost {
		var body struct {
			OpenID   *string `json:"openId"`
			Phone    *string `json:"phone"`
			Nickname *string `json:"nickname"`
			WechatID *string `json:"wechatId"`
			Avatar   *string `json:"avatar"`
			IsAdmin  *bool   `json:"isAdmin"`
		}
		if err := c.ShouldBindJSON(&body); err != nil {
			c.JSON(http.StatusOK, gin.H{"success": false, "error": "请求体无效"})
			return
		}
		userID := "user_" + randomSuffix()
		code := "SOUL" + randomSuffix()[:4]
		nick := "用户"
		if body.Nickname != nil && *body.Nickname != "" {
			nick = *body.Nickname
		} else {
			nick = nick + userID[len(userID)-4:]
		}
		u := model.User{
			ID: userID, Nickname: &nick, ReferralCode: &code,
			OpenID: body.OpenID, Phone: body.Phone, WechatID: body.WechatID, Avatar: body.Avatar,
		}
		if body.IsAdmin != nil {
			u.IsAdmin = body.IsAdmin
		}
		if err := db.Create(&u).Error; err != nil {
			c.JSON(http.StatusOK, gin.H{"success": false, "error": err.Error()})
			return
		}
		c.JSON(http.StatusOK, gin.H{"success": true, "user": u, "isNew": true, "message": "用户创建成功"})
		return
	}
	// PUT 更新（含 VIP 手动设置：is_vip、vip_expire_date、vip_name、vip_avatar、vip_project、vip_contact、vip_bio；tags 存 ckb_tags）
	var body struct {
		ID              string   `json:"id"`
		Nickname        *string  `json:"nickname"`
		Phone           *string  `json:"phone"`
		WechatID        *string  `json:"wechatId"`
		Avatar          *string  `json:"avatar"`
		Tags            *string  `json:"tags"` // JSON 数组字符串，如 ["创业者","电商"]，存 ckb_tags
		HasFullBook     *bool    `json:"hasFullBook"`
		IsAdmin         *bool    `json:"isAdmin"`
		Earnings        *float64 `json:"earnings"`
		PendingEarnings *float64 `json:"pendingEarnings"`
		IsVip           *bool    `json:"isVip"`
		VipExpireDate   *string  `json:"vipExpireDate"` // "2026-12-31" 或 "2026-12-31 23:59:59"
		VipSort         *int     `json:"vipSort"`       // 手动排序，越小越前
		VipRole         *string  `json:"vipRole"`       // 角色：从 vip_roles 选或手动填写
		VipName         *string  `json:"vipName"`
		VipAvatar       *string  `json:"vipAvatar"`
		VipProject      *string  `json:"vipProject"`
		VipContact      *string  `json:"vipContact"`
		VipBio          *string  `json:"vipBio"`
	}
	if err := c.ShouldBindJSON(&body); err != nil || body.ID == "" {
		c.JSON(http.StatusOK, gin.H{"success": false, "error": "用户ID不能为空"})
		return
	}
	// 手动设置 VIP 时，必须提供有效到期日
	if body.IsVip != nil && *body.IsVip {
		if body.VipExpireDate == nil || strings.TrimSpace(*body.VipExpireDate) == "" {
			c.JSON(http.StatusOK, gin.H{"success": false, "error": "开启 VIP 时请填写有效到期日"})
			return
		}
		if _, err := time.ParseInLocation("2006-01-02", strings.TrimSpace(*body.VipExpireDate), time.Local); err != nil {
			if _, err2 := time.ParseInLocation("2006-01-02 15:04:05", strings.TrimSpace(*body.VipExpireDate), time.Local); err2 != nil {
				c.JSON(http.StatusOK, gin.H{"success": false, "error": "到期日格式无效，请使用 YYYY-MM-DD"})
				return
			}
		}
	}
	updates := map[string]interface{}{}
	if body.Nickname != nil {
		updates["nickname"] = *body.Nickname
	}
	if body.Phone != nil {
		updates["phone"] = *body.Phone
	}
	if body.WechatID != nil {
		updates["wechat_id"] = *body.WechatID
	}
	if body.Avatar != nil {
		updates["avatar"] = avatarToPath(*body.Avatar)
	}
	if body.Tags != nil {
		updates["ckb_tags"] = *body.Tags
	}
	if body.HasFullBook != nil {
		updates["has_full_book"] = *body.HasFullBook
	}
	if body.IsAdmin != nil {
		updates["is_admin"] = *body.IsAdmin
	}
	if body.Earnings != nil {
		updates["earnings"] = *body.Earnings
	}
	if body.PendingEarnings != nil {
		updates["pending_earnings"] = *body.PendingEarnings
	}
	if body.IsVip != nil {
		updates["is_vip"] = *body.IsVip
		if *body.IsVip {
			now := time.Now()
			updates["vip_activated_at"] = now // 手动设置时与付款一致：按时间排序，最新在前
		} else {
			updates["vip_activated_at"] = nil
		}
	}
	if body.VipExpireDate != nil {
		if *body.VipExpireDate == "" {
			updates["vip_expire_date"] = nil
		} else {
			if t, err := time.ParseInLocation("2006-01-02", *body.VipExpireDate, time.Local); err == nil {
				updates["vip_expire_date"] = t
			} else if t, err := time.ParseInLocation("2006-01-02 15:04:05", *body.VipExpireDate, time.Local); err == nil {
				updates["vip_expire_date"] = t
			}
		}
	}
	if body.VipSort != nil {
		updates["vip_sort"] = *body.VipSort
	}
	if body.VipRole != nil {
		s := strings.TrimSpace(*body.VipRole)
		if s == "" {
			updates["vip_role"] = nil
		} else {
			updates["vip_role"] = s
		}
	}
	if body.VipName != nil {
		updates["vip_name"] = *body.VipName
	}
	if body.VipAvatar != nil {
		updates["vip_avatar"] = avatarToPath(*body.VipAvatar)
	}
	if body.VipProject != nil {
		updates["vip_project"] = *body.VipProject
	}
	if body.VipContact != nil {
		updates["vip_contact"] = *body.VipContact
	}
	if body.VipBio != nil {
		updates["vip_bio"] = *body.VipBio
	}
	if len(updates) == 0 {
		c.JSON(http.StatusOK, gin.H{"success": true, "message": "没有需要更新的字段"})
		return
	}
	// VIP 相关更新时记录日志（手动设置）
	if body.IsVip != nil || body.VipExpireDate != nil || body.VipName != nil || body.VipAvatar != nil || body.VipProject != nil || body.VipContact != nil || body.VipBio != nil {
		isVipStr := "-"
		if body.IsVip != nil {
			isVipStr = fmt.Sprintf("%v", *body.IsVip)
		}
		vipExpire := "-"
		if body.VipExpireDate != nil {
			vipExpire = *body.VipExpireDate
		}
		fmt.Printf("[VIP] 设置方式=手动设置, userId=%s, isVip=%s, vipExpireDate=%s\n", body.ID, isVipStr, vipExpire)
	}
	if err := db.Model(&model.User{}).Where("id = ?", body.ID).Updates(updates).Error; err != nil {
		c.JSON(http.StatusOK, gin.H{"success": false, "error": err.Error()})
		return
	}
	c.JSON(http.StatusOK, gin.H{"success": true, "message": "用户更新成功"})
}

func randomSuffix() string {
	return fmt.Sprintf("%d%x", time.Now().UnixNano()%100000, time.Now().UnixNano()&0xfff)
}

// DBUsersDelete DELETE /api/db/users（软删除：仅设置 deleted_at，用户再次登录会新建账号）
func DBUsersDelete(c *gin.Context) {
	id := c.Query("id")
	if id == "" {
		c.JSON(http.StatusOK, gin.H{"success": false, "error": "用户ID不能为空"})
		return
	}
	db := database.DB()
	result := db.Where("id = ?", id).Delete(&model.User{})
	if result.Error != nil {
		c.JSON(http.StatusOK, gin.H{"success": false, "error": result.Error.Error()})
		return
	}
	if result.RowsAffected == 0 {
		c.JSON(http.StatusOK, gin.H{"success": false, "error": "用户不存在或已被删除"})
		return
	}
	c.JSON(http.StatusOK, gin.H{"success": true, "message": "用户已删除（假删除），该用户再次登录将创建新账号"})
}

// DBUsersReferrals GET /api/db/users/referrals（绑定关系详情弹窗；收益与「已付费」与小程序口径一致：订单+提现表实时计算）
func DBUsersReferrals(c *gin.Context) {
	userId := c.Query("userId")
	if userId == "" {
		c.JSON(http.StatusOK, gin.H{"success": false, "error": "缺少 userId"})
		return
	}
	db := database.DB()

	// 入站来源链路：即使未完成绑定，也保留“通过谁的分享链接点击进入”的历史
	var currentUser model.User
	_ = db.Select("id,open_id").Where("id = ?", userId).First(&currentUser).Error
	var inboundVisits []model.ReferralVisit
	visitQ := db.Model(&model.ReferralVisit{}).Where("visitor_id = ?", userId)
	if currentUser.OpenID != nil && strings.TrimSpace(*currentUser.OpenID) != "" {
		visitQ = visitQ.Or("visitor_openid = ?", strings.TrimSpace(*currentUser.OpenID))
	}
	_ = visitQ.Order("created_at ASC").Limit(300).Find(&inboundVisits).Error

	referrerVisitIDs := make(map[string]bool)
	for _, v := range inboundVisits {
		if strings.TrimSpace(v.ReferrerID) != "" {
			referrerVisitIDs[strings.TrimSpace(v.ReferrerID)] = true
		}
	}
	referrerVisitList := make([]string, 0, len(referrerVisitIDs))
	for id := range referrerVisitIDs {
		referrerVisitList = append(referrerVisitList, id)
	}
	referrerVisitUserMap := make(map[string]*model.User)
	if len(referrerVisitList) > 0 {
		var rs []model.User
		_ = db.Where("id IN ?", referrerVisitList).Find(&rs).Error
		for i := range rs {
			referrerVisitUserMap[rs[i].ID] = &rs[i]
		}
	}

	inboundVisitItems := make([]gin.H, 0, len(inboundVisits))
	firstInbound := gin.H{}
	latestInbound := gin.H{}
	for i, v := range inboundVisits {
		nickname := "微信用户"
		avatar := ""
		if u := referrerVisitUserMap[v.ReferrerID]; u != nil {
			if u.Nickname != nil && strings.TrimSpace(*u.Nickname) != "" {
				nickname = strings.TrimSpace(*u.Nickname)
			}
			if u.Avatar != nil {
				avatar = resolveAvatarURL(strings.TrimSpace(*u.Avatar))
			}
		}
		source := ""
		page := ""
		if v.Source != nil {
			source = strings.TrimSpace(*v.Source)
		}
		if v.Page != nil {
			page = strings.TrimSpace(*v.Page)
		}
		item := gin.H{
			"seq":             i + 1,
			"visitedAt":       v.CreatedAt,
			"referrerId":      v.ReferrerID,
			"referrerNickname": nickname,
			"referrerAvatar":  avatar,
			"source":          source,
			"page":            page,
		}
		if i == 0 {
			firstInbound = item
		}
		latestInbound = item
		inboundVisitItems = append(inboundVisitItems, item)
	}

	activeBinding := gin.H{}
	var activeRef model.ReferralBinding
	if err := db.Where("referee_id = ? AND status = ?", userId, "active").Order("binding_date DESC").First(&activeRef).Error; err == nil {
		bindNick := "微信用户"
		bindAvatar := ""
		if u := referrerVisitUserMap[activeRef.ReferrerID]; u != nil {
			if u.Nickname != nil && strings.TrimSpace(*u.Nickname) != "" {
				bindNick = strings.TrimSpace(*u.Nickname)
			}
			if u.Avatar != nil {
				bindAvatar = resolveAvatarURL(strings.TrimSpace(*u.Avatar))
			}
		} else {
			var ru model.User
			if err := db.Select("id,nickname,avatar").Where("id = ?", activeRef.ReferrerID).First(&ru).Error; err == nil {
				if ru.Nickname != nil && strings.TrimSpace(*ru.Nickname) != "" {
					bindNick = strings.TrimSpace(*ru.Nickname)
				}
				if ru.Avatar != nil {
					bindAvatar = resolveAvatarURL(strings.TrimSpace(*ru.Avatar))
				}
			}
		}
		activeBinding = gin.H{
			"referrerId":       activeRef.ReferrerID,
			"referrerNickname": bindNick,
			"referrerAvatar":   bindAvatar,
			"referralCode":     activeRef.ReferralCode,
			"bindingDate":      activeRef.BindingDate,
			"expiryDate":       activeRef.ExpiryDate,
		}
	}

	var bindings []model.ReferralBinding
	if err := db.Where("referrer_id = ?", userId).Order("binding_date DESC").Find(&bindings).Error; err != nil {
		bindings = []model.ReferralBinding{}
	}
	refereeIdSet := make(map[string]bool, len(bindings))
	for _, b := range bindings {
		refereeIdSet[b.RefereeID] = true
	}

	// 补充：从 orders.referrer_id 找到通过推荐码购买但未在 referral_bindings 中的用户
	var orderBuyerIDs []string
	db.Model(&model.Order{}).Select("DISTINCT user_id").
		Where("referrer_id = ? AND status = ? AND user_id != ''", userId, "paid").
		Pluck("user_id", &orderBuyerIDs)
	for _, buyerID := range orderBuyerIDs {
		if !refereeIdSet[buyerID] {
			refereeIdSet[buyerID] = true
		}
	}

	allRefereeIds := make([]string, 0, len(refereeIdSet))
	for id := range refereeIdSet {
		allRefereeIds = append(allRefereeIds, id)
	}
	var users []model.User
	if len(allRefereeIds) > 0 {
		db.Where("id IN ?", allRefereeIds).Find(&users)
	}
	userMap := make(map[string]*model.User)
	for i := range users {
		userMap[users[i].ID] = &users[i]
	}
	referrals := make([]gin.H, 0, len(bindings)+len(orderBuyerIDs))
	bindingRefereeSet := make(map[string]bool, len(bindings))
	for _, b := range bindings {
		bindingRefereeSet[b.RefereeID] = true
		u := userMap[b.RefereeID]
		nick := "微信用户"
		var avatar *string
		var phone *string
		hasFullBook := false
		if u != nil {
			if u.Nickname != nil {
				nick = *u.Nickname
			}
			avatar, phone = u.Avatar, u.Phone
			if u.HasFullBook != nil {
				hasFullBook = *u.HasFullBook
			}
		}
		status := "active"
		if b.Status != nil {
			status = *b.Status
		}
		daysRemaining := 0
		if b.ExpiryDate.After(time.Now()) {
			daysRemaining = int(b.ExpiryDate.Sub(time.Now()).Hours() / 24)
		}
		hasPaid := b.PurchaseCount != nil && *b.PurchaseCount > 0
		displayStatus := bindingStatusDisplay(hasPaid, hasFullBook)
		avStr := ""
		if avatar != nil {
			avStr = resolveAvatarURL(*avatar)
		}
		referrals = append(referrals, gin.H{
			"id": b.RefereeID, "nickname": nick, "avatar": avStr, "phone": phone,
			"hasFullBook":       hasFullBook || status == "converted",
			"purchasedSections": getBindingPurchaseCount(b),
			"createdAt":         b.BindingDate, "bindingStatus": status, "daysRemaining": daysRemaining, "commission": b.TotalCommission,
			"status": displayStatus,
		})
	}
	for _, buyerID := range orderBuyerIDs {
		if bindingRefereeSet[buyerID] {
			continue
		}
		u := userMap[buyerID]
		nick := "微信用户"
		avStr := ""
		var phone *string
		hasFullBook := false
		if u != nil {
			if u.Nickname != nil {
				nick = *u.Nickname
			}
			if u.Avatar != nil {
				avStr = resolveAvatarURL(*u.Avatar)
			}
			phone = u.Phone
			if u.HasFullBook != nil {
				hasFullBook = *u.HasFullBook
			}
		}
		referrals = append(referrals, gin.H{
			"id": buyerID, "nickname": nick, "avatar": avStr, "phone": phone,
			"hasFullBook": hasFullBook, "purchasedSections": 0,
			"createdAt": nil, "bindingStatus": "order_only", "daysRemaining": 0, "commission": nil,
			"status": "paid",
		})
	}

	// 累计收益、待提现：与小程序 MyEarnings 一致，从订单逐条 computeOrderCommission 求和
	var refOrders []model.Order
	db.Where("referrer_id = ? AND status = ?", userId, "paid").Find(&refOrders)
	earningsE := 0.0
	for i := range refOrders {
		earningsE += computeOrderCommission(db, &refOrders[i], nil)
	}

	var withdrawnSum struct{ Total float64 }
	db.Model(&model.Withdrawal{}).Select("COALESCE(SUM(amount), 0) as total").
		Where("user_id = ? AND status = ?", userId, "success").
		Scan(&withdrawnSum)
	withdrawnE := withdrawnSum.Total

	var pendingWdSum struct{ Total float64 }
	db.Model(&model.Withdrawal{}).Select("COALESCE(SUM(amount), 0) as total").
		Where("user_id = ? AND status IN ?", userId, []string{"pending", "processing", "pending_confirm"}).
		Scan(&pendingWdSum)
	availableE := earningsE - withdrawnE - pendingWdSum.Total
	if availableE < 0 {
		availableE = 0
	}

	// 已付费人数：绑定中 purchase_count > 0 的 + 仅订单用户（order_only 都已付费）
	purchased := 0
	for _, b := range bindings {
		if b.PurchaseCount != nil && *b.PurchaseCount > 0 {
			purchased++
		}
	}
	orderOnlyCount := 0
	for _, buyerID := range orderBuyerIDs {
		if !bindingRefereeSet[buyerID] {
			orderOnlyCount++
			purchased++
		}
	}
	totalReferrals := len(bindings) + orderOnlyCount

	c.JSON(http.StatusOK, gin.H{
		"success": true, "referrals": referrals,
		"inboundSource": gin.H{
			"totalVisits": len(inboundVisitItems),
			"firstVisit":  firstInbound,
			"latestVisit": latestInbound,
			"activeBinding": activeBinding,
			"visits":      inboundVisitItems,
		},
		"stats": gin.H{
			"total": totalReferrals, "purchased": purchased, "free": totalReferrals - purchased,
			"earnings": roundFloat(earningsE, 2), "pendingEarnings": roundFloat(availableE, 2), "withdrawnEarnings": roundFloat(withdrawnE, 2),
		},
	})
}

func getBindingPurchaseCount(b model.ReferralBinding) int {
	if b.PurchaseCount == nil {
		return 0
	}
	return *b.PurchaseCount
}

func bindingStatusDisplay(hasPaid bool, hasFullBook bool) string {
	if hasFullBook {
		return "vip"
	}
	if hasPaid {
		return "paid"
	}
	return "free"
}

func roundFloat(v float64, prec int) float64 {
	ratio := 1.0
	for i := 0; i < prec; i++ {
		ratio *= 10
	}
	return float64(int(v*ratio+0.5)) / ratio
}

// DBInit POST /api/db/init
func DBInit(c *gin.Context) {
	c.JSON(http.StatusOK, gin.H{"success": true, "data": gin.H{"message": "初始化接口已就绪（表结构由迁移维护）"}})
}

// DBDistribution GET /api/db/distribution（支持分页 page、pageSize，筛选 status、search）
func DBDistribution(c *gin.Context) {
	userId := c.Query("userId")
	page, _ := strconv.Atoi(c.DefaultQuery("page", "1"))
	pageSize, _ := strconv.Atoi(c.DefaultQuery("pageSize", "10"))
	statusFilter := c.Query("status")
	if page < 1 {
		page = 1
	}
	if pageSize < 1 || pageSize > 100 {
		pageSize = 10
	}

	db := database.DB()
	q := db.Model(&model.ReferralBinding{})
	if userId != "" {
		q = q.Where("referrer_id = ?", userId)
	}
	if statusFilter != "" && statusFilter != "all" {
		q = q.Where("status = ?", statusFilter)
	}
	var total int64
	q.Count(&total)

	var bindings []model.ReferralBinding
	query := db.Model(&model.ReferralBinding{}).Order("binding_date DESC")
	if userId != "" {
		query = query.Where("referrer_id = ?", userId)
	}
	if statusFilter != "" && statusFilter != "all" {
		query = query.Where("status = ?", statusFilter)
	}
	if err := query.Offset((page - 1) * pageSize).Limit(pageSize).Find(&bindings).Error; err != nil {
		c.JSON(http.StatusOK, gin.H{"success": true, "bindings": []interface{}{}, "total": 0, "page": page, "pageSize": pageSize, "totalPages": 0})
		return
	}
	referrerIds := make(map[string]bool)
	refereeIds := make(map[string]bool)
	for _, b := range bindings {
		referrerIds[b.ReferrerID] = true
		refereeIds[b.RefereeID] = true
	}
	allIds := make([]string, 0, len(referrerIds)+len(refereeIds))
	for id := range referrerIds {
		allIds = append(allIds, id)
	}
	for id := range refereeIds {
		if !referrerIds[id] {
			allIds = append(allIds, id)
		}
	}
	var users []model.User
	if len(allIds) > 0 {
		db.Where("id IN ?", allIds).Find(&users)
	}
	userMap := make(map[string]*model.User)
	for i := range users {
		userMap[users[i].ID] = &users[i]
	}
	getStr := func(s *string) string {
		if s == nil || *s == "" {
			return ""
		}
		return *s
	}
	out := make([]gin.H, 0, len(bindings))
	for _, b := range bindings {
		refNick := "微信用户"
		var refereePhone, refereeAvatar *string
		if u := userMap[b.RefereeID]; u != nil {
			if u.Nickname != nil && *u.Nickname != "" {
				refNick = *u.Nickname
			} else {
				refNick = "微信用户"
			}
			refereePhone = u.Phone
			refereeAvatar = u.Avatar
		}
		var referrerName, referrerAvatar *string
		if u := userMap[b.ReferrerID]; u != nil {
			referrerName = u.Nickname
			referrerAvatar = u.Avatar
		}
		days := 0
		if b.ExpiryDate.After(time.Now()) {
			days = int(b.ExpiryDate.Sub(time.Now()).Hours() / 24)
		}
		// 佣金展示用累计佣金 total_commission（支付回调累加），无则用 commission_amount
		commissionVal := b.TotalCommission
		if commissionVal == nil {
			commissionVal = b.CommissionAmount
		}
		statusVal := ""
		if b.Status != nil {
			statusVal = *b.Status
		}
		out = append(out, gin.H{
			"id": b.ID, "referrerId": b.ReferrerID, "referrerName": getStr(referrerName), "referrerCode": b.ReferralCode, "referrerAvatar": resolveAvatarURL(getStr(referrerAvatar)),
			"refereeId": b.RefereeID, "refereeNickname": refNick, "refereePhone": getStr(refereePhone), "refereeAvatar": resolveAvatarURL(getStr(refereeAvatar)),
			"boundAt": b.BindingDate, "expiresAt": b.ExpiryDate, "status": statusVal,
			"daysRemaining": days, "commission": commissionVal, "totalCommission": commissionVal, "source": "miniprogram",
		})
	}
	totalPages := int(total) / pageSize
	if int(total)%pageSize > 0 {
		totalPages++
	}
	c.JSON(http.StatusOK, gin.H{
		"success": true, "bindings": out,
		"total": total, "page": page, "pageSize": pageSize, "totalPages": totalPages,
	})
}

// DBChapters GET/POST /api/db/chapters
func DBChapters(c *gin.Context) {
	var list []model.Chapter
	if err := database.DB().Order("sort_order ASC, id ASC").Find(&list).Error; err != nil {
		c.JSON(http.StatusOK, gin.H{"success": false, "error": err.Error(), "data": []interface{}{}})
		return
	}
	c.JSON(http.StatusOK, gin.H{"success": true, "data": list})
}

// DBConfigDelete DELETE /api/db/config
func DBConfigDelete(c *gin.Context) {
	key := c.Query("key")
	if key == "" {
		c.JSON(http.StatusOK, gin.H{"success": false, "error": "配置键不能为空"})
		return
	}
	if err := database.DB().Where("config_key = ?", key).Delete(&model.SystemConfig{}).Error; err != nil {
		c.JSON(http.StatusOK, gin.H{"success": false, "error": err.Error()})
		return
	}
	c.JSON(http.StatusOK, gin.H{"success": true})
}

// DBInitGet GET /api/db/init
func DBInitGet(c *gin.Context) {
	c.JSON(http.StatusOK, gin.H{"success": true, "data": gin.H{"message": "ok"}})
}

// DBMigrateGet GET /api/db/migrate
func DBMigrateGet(c *gin.Context) {
	c.JSON(http.StatusOK, gin.H{"success": true, "message": "迁移状态查询（由 Prisma/外部维护）"})
}

// DBMigratePost POST /api/db/migrate
func DBMigratePost(c *gin.Context) {
	c.JSON(http.StatusOK, gin.H{"success": true, "message": "迁移由 Prisma/外部执行"})
}