package handler

import (
	"fmt"
	"net/http"
	"strconv"
	"strings"

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

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

// DBCKBLeadList GET /api/db/ckb-leads 管理端-CKB线索明细
// mode=submitted: ckb_submit_records（join/match 提交）
// mode=contact: ckb_lead_records（链接卡若留资，有 phone/wechat）
func DBCKBLeadList(c *gin.Context) {
	db := database.DB()
	mode := c.DefaultQuery("mode", "submitted")
	matchType := c.Query("matchType")
	page, _ := strconv.Atoi(c.DefaultQuery("page", "1"))
	pageSize, _ := strconv.Atoi(c.DefaultQuery("pageSize", "20"))
	if page < 1 {
		page = 1
	}
	if pageSize < 1 || pageSize > 100 {
		pageSize = 20
	}

	if mode == "contact" {
		search := c.Query("search")
		source := c.Query("source")
		pushStatus := strings.TrimSpace(c.Query("pushStatus"))
		q := db.Model(&model.CkbLeadRecord{})
		if search != "" {
			q = q.Where("nickname LIKE ? OR phone LIKE ? OR wechat_id LIKE ? OR name LIKE ?",
				"%"+search+"%", "%"+search+"%", "%"+search+"%", "%"+search+"%")
		}
		if source != "" {
			q = q.Where("source = ?", source)
		}
		if pushStatus != "" {
			q = q.Where("push_status = ?", pushStatus)
		}
		var total int64
		q.Count(&total)
		var records []model.CkbLeadRecord
		if err := q.Order("created_at DESC").Offset((page - 1) * pageSize).Limit(pageSize).Find(&records).Error; err != nil {
			c.JSON(http.StatusOK, gin.H{"success": false, "error": err.Error()})
			return
		}
		// 批量查 persons 获取 personName、ckbPlanId
		personIDs := make([]string, 0)
		for _, r := range records {
			if r.TargetPersonID != "" {
				personIDs = append(personIDs, r.TargetPersonID)
			}
		}
		personMap := make(map[string]*model.Person)
		if len(personIDs) > 0 {
			var persons []model.Person
			db.Where("person_id IN ? OR token IN ?", personIDs, personIDs).Find(&persons)
			for i := range persons {
				personMap[persons[i].PersonID] = &persons[i]
				personMap[persons[i].Token] = &persons[i]
			}
		}
		// 批量查 users：头像、昵称（与会员资料一致）
		uidSet := make(map[string]struct{})
		for _, r := range records {
			if strings.TrimSpace(r.UserID) != "" {
				uidSet[r.UserID] = struct{}{}
			}
		}
		uids := make([]string, 0, len(uidSet))
		for id := range uidSet {
			uids = append(uids, id)
		}
		userMap := make(map[string]*model.User)
		if len(uids) > 0 {
			var urows []model.User
			db.Select("id", "nickname", "avatar").Where("id IN ?", uids).Find(&urows)
			for i := range urows {
				userMap[urows[i].ID] = &urows[i]
			}
		}
		out := make([]gin.H, 0, len(records))
		for _, r := range records {
			personName := ""
			ckbPlanId := int64(0)
			if p := personMap[r.TargetPersonID]; p != nil {
				personName = p.Name
				ckbPlanId = p.CkbPlanID
			}
			displayNick := r.Nickname
			userAvatar := ""
			if u := userMap[r.UserID]; u != nil {
				userAvatar = resolveAvatarURL(getStringValue(u.Avatar))
				if u.Nickname != nil && strings.TrimSpace(*u.Nickname) != "" {
					displayNick = strings.TrimSpace(*u.Nickname)
				}
			}
			out = append(out, gin.H{
				"id":             r.ID,
				"userId":         r.UserID,
				"userNickname":   displayNick,
				"userAvatar":     userAvatar,
				"matchType":      "lead",
				"phone":          r.Phone,
				"wechatId":       r.WechatID,
				"name":           r.Name,
				"source":         r.Source,
				"targetPersonId": r.TargetPersonID,
				"personName":     personName,
				"ckbPlanId":      ckbPlanId,
				"pushStatus":     r.PushStatus,
				"retryCount":     r.RetryCount,
				"ckbError":       r.CkbError,
				"lastPushAt":     r.LastPushAt,
				"nextRetryAt":    r.NextRetryAt,
				"createdAt":      r.CreatedAt,
			})
		}
		// 统计摘要：来源分布、去重获客人数
		type sourceStat struct {
			Source string `gorm:"column:source" json:"source"`
			Cnt    int64  `gorm:"column:cnt" json:"cnt"`
		}
		var sourceStats []sourceStat
		db.Raw("SELECT COALESCE(source,'未知') as source, COUNT(*) as cnt FROM ckb_lead_records GROUP BY source ORDER BY cnt DESC").Scan(&sourceStats)
		var uniqueUsers int64
		db.Raw("SELECT COUNT(DISTINCT user_id) FROM ckb_lead_records WHERE user_id IS NOT NULL AND user_id != ''").Scan(&uniqueUsers)

		c.JSON(http.StatusOK, gin.H{
			"success": true, "records": out, "total": total, "page": page, "pageSize": pageSize,
			"stats": gin.H{
				"uniqueUsers": uniqueUsers,
				"sourceStats": sourceStats,
			},
		})
		return
	}

	// mode=submitted: ckb_submit_records
	q := db.Model(&model.CkbSubmitRecord{})
	if matchType != "" {
		// matchType 对应 action: join 时 type 在 params 中，match 时 matchType 在 params 中
		// 简化：仅按 action 过滤，join 时 params 含 type
		if matchType == "join" || matchType == "match" {
			q = q.Where("action = ?", matchType)
		}
	}
	var total int64
	q.Count(&total)
	var records []model.CkbSubmitRecord
	if err := q.Order("created_at DESC").Offset((page - 1) * pageSize).Limit(pageSize).Find(&records).Error; err != nil {
		c.JSON(http.StatusOK, gin.H{"success": false, "error": err.Error()})
		return
	}
	userIDs := make(map[string]bool)
	for _, r := range records {
		if r.UserID != "" {
			userIDs[r.UserID] = true
		}
	}
	ids := make([]string, 0, len(userIDs))
	for id := range userIDs {
		ids = append(ids, id)
	}
	var users []model.User
	if len(ids) > 0 {
		db.Where("id IN ?", ids).Find(&users)
	}
	userMap := make(map[string]*model.User)
	for i := range users {
		userMap[users[i].ID] = &users[i]
	}
	safeNickname := func(u *model.User) string {
		if u == nil || u.Nickname == nil {
			return ""
		}
		return *u.Nickname
	}
	out := make([]gin.H, 0, len(records))
	for _, r := range records {
		out = append(out, gin.H{
			"id":           r.ID,
			"userId":       r.UserID,
			"userNickname": safeNickname(userMap[r.UserID]),
			"matchType":    r.Action,
			"nickname":     r.Nickname,
			"params":       r.Params,
			"createdAt":    r.CreatedAt,
		})
	}
	c.JSON(http.StatusOK, gin.H{"success": true, "records": out, "total": total, "page": page, "pageSize": pageSize})
}

// DBCKBLeadRetry POST /api/db/ckb-leads/retry 管理端-手动重推单条失败线索
func DBCKBLeadRetry(c *gin.Context) {
	var body struct {
		ID int64 `json:"id" binding:"required"`
	}
	if err := c.ShouldBindJSON(&body); err != nil || body.ID <= 0 {
		c.JSON(http.StatusOK, gin.H{"success": false, "error": "缺少有效 id"})
		return
	}
	ok, err := RetryCkbLeadByID(c.Request.Context(), body.ID)
	if err != nil {
		msg := strings.TrimSpace(err.Error())
		if msg == "" {
			msg = "重推失败"
		}
		c.JSON(http.StatusOK, gin.H{"success": false, "error": msg})
		return
	}
	db := database.DB()
	var r model.CkbLeadRecord
	if err := db.Where("id = ?", body.ID).First(&r).Error; err != nil {
		c.JSON(http.StatusOK, gin.H{"success": true, "pushed": ok})
		return
	}
	c.JSON(http.StatusOK, gin.H{
		"success": true,
		"pushed":  ok,
		"record": gin.H{
			"id":          r.ID,
			"pushStatus":  r.PushStatus,
			"retryCount":  r.RetryCount,
			"ckbError":    r.CkbError,
			"lastPushAt":  r.LastPushAt,
			"nextRetryAt": r.NextRetryAt,
		},
	})
}

// DBCKBLeadDelete POST /api/db/ckb-leads/delete 管理端-删除一条留资记录（运营清理误报/测试数据）
func DBCKBLeadDelete(c *gin.Context) {
	var body struct {
		ID int64 `json:"id" binding:"required"`
	}
	if err := c.ShouldBindJSON(&body); err != nil || body.ID <= 0 {
		c.JSON(http.StatusOK, gin.H{"success": false, "error": "缺少有效 id"})
		return
	}
	db := database.DB()
	res := db.Delete(&model.CkbLeadRecord{}, body.ID)
	if res.Error != nil {
		c.JSON(http.StatusOK, gin.H{"success": false, "error": res.Error.Error()})
		return
	}
	if res.RowsAffected == 0 {
		c.JSON(http.StatusOK, gin.H{"success": false, "error": "记录不存在或已删除"})
		return
	}
	c.JSON(http.StatusOK, gin.H{"success": true})
}

// ckbLeadDeleteBatchMax 单次批量删除上限，防止误操作与请求过大
const ckbLeadDeleteBatchMax = 500

// DBCKBLeadDeleteBatch POST /api/db/ckb-leads/delete-batch 管理端-批量删除留资记录
func DBCKBLeadDeleteBatch(c *gin.Context) {
	var body struct {
		IDs []int64 `json:"ids" binding:"required"`
	}
	if err := c.ShouldBindJSON(&body); err != nil {
		c.JSON(http.StatusOK, gin.H{"success": false, "error": "请传入 ids 数组"})
		return
	}
	seen := make(map[int64]struct{})
	clean := make([]int64, 0, len(body.IDs))
	for _, id := range body.IDs {
		if id <= 0 {
			continue
		}
		if _, ok := seen[id]; ok {
			continue
		}
		seen[id] = struct{}{}
		clean = append(clean, id)
	}
	if len(clean) == 0 {
		c.JSON(http.StatusOK, gin.H{"success": false, "error": "没有有效的 id"})
		return
	}
	if len(clean) > ckbLeadDeleteBatchMax {
		c.JSON(http.StatusOK, gin.H{
			"success": false,
			"error":   fmt.Sprintf("单次最多删除 %d 条，请减少勾选或分批提交", ckbLeadDeleteBatchMax),
		})
		return
	}
	db := database.DB()
	res := db.Where("id IN ?", clean).Delete(&model.CkbLeadRecord{})
	if res.Error != nil {
		c.JSON(http.StatusOK, gin.H{"success": false, "error": res.Error.Error()})
		return
	}
	c.JSON(http.StatusOK, gin.H{"success": true, "deleted": res.RowsAffected})
}

// CKBPlanStats GET /api/db/ckb-plan-stats 存客宝获客计划统计（基于 ckb_submit_records + ckb_lead_records）
func CKBPlanStats(c *gin.Context) {
	db := database.DB()
	type TypeStat struct {
		Action string `gorm:"column:action" json:"matchType"`
		Total  int64  `gorm:"column:total" json:"total"`
	}
	var submitStats []TypeStat
	db.Raw("SELECT action, COUNT(*) as total FROM ckb_submit_records GROUP BY action").Scan(&submitStats)
	var submitTotal int64
	db.Model(&model.CkbSubmitRecord{}).Count(&submitTotal)
	var leadTotal int64
	db.Model(&model.CkbLeadRecord{}).Count(&leadTotal)
	withContact := leadTotal // ckb_lead_records 均有 phone 或 wechat
	c.JSON(http.StatusOK, gin.H{
		"success": true,
		"data": gin.H{
			"ckbTotal":    submitTotal + leadTotal,
			"withContact": withContact,
			"byType":      submitStats,
			"ckbApiKey":   "***",
			"ckbApiUrl":   "https://ckbapi.quwanzhi.com/v1/api/scenarios",
			"docNotes":    "",
			"docContent":  "",
			"routes":      gin.H{},
		},
	})
}