export interface Section {
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  filePath: string
  content?: string
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export interface Chapter {
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}

export interface Part {
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  title: string
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  chapters: Chapter[]
}

export const BASE_BOOK_PRICE = 9.9
export const PRICE_INCREMENT_PER_SECTION = 1
export const SECTION_PRICE = 1
export const AUTHOR_SHARE = 0.9
export const DISTRIBUTOR_SHARE = 0.1

export function getFullBookPrice(sectionsCount?: number): number {
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    id: "part-1",
    number: "01",
    title: "真实的人",
    subtitle: "人性观察与社交逻辑",
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      {
        id: "chapter-1",
        title: "人与人之间的底层逻辑",
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    title: "真实的行业",
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      {
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  {
    id: "part-3",
    number: "03",
    title: "真实的错误",
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      {
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        title: "我人生错过的4件大钱",
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      {
        id: "chapter-7",
        title: "别人犯的错误",
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  },
  {
    id: "part-4",
    number: "04",
    title: "真实的赚钱",
    subtitle: "所有行业的杠杆结构",
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      {
        id: "chapter-8",
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      {
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        title: "我在Soul上亲访的赚钱案例",
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  {
    id: "part-5",
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    title: "真实的未来",
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            isFree: false,
            unlockAfterDays: 3,
            filePath: "book/第五篇｜真实的社会/第10章｜未来职业的变化趋势/10.4 新型公司:Soul-飞书-线下的三位一体.md",
          },
        ],
      },
      {
        id: "chapter-11",
        title: "中国社会商业生态的未来",
        sections: [
          {
            id: "11.1",
            title: "城市之间的模式差",
            price: 1,
            isFree: false,
            unlockAfterDays: 3,
            filePath: "book/第五篇｜真实的社会/第11章｜中国社会商业生态的未来/11.1 城市之间的模式差.md",
          },
          {
            id: "11.2",
            title: "厦门样本:低成本高效率经济",
            price: 1,
            isFree: false,
            unlockAfterDays: 3,
            filePath: "book/第五篇｜真实的社会/第11章｜中国社会商业生态的未来/11.2 厦门样本:低成本高效率经济.md",
          },
          {
            id: "11.3",
            title: "流量红利的终局",
            price: 1,
            isFree: false,
            unlockAfterDays: 3,
            filePath: "book/第五篇｜真实的社会/第11章｜中国社会商业生态的未来/11.3 流量红利的终局.md",
          },
          {
            id: "11.4",
            title: "大模型+供应链的组合拳",
            price: 1,
            isFree: false,
            unlockAfterDays: 3,
            filePath: "book/第五篇｜真实的社会/第11章｜中国社会商业生态的未来/11.4 大模型 + 供应链的组合拳.md",
          },
          {
            id: "11.5",
            title: "社会分层的最终逻辑",
            price: 1,
            isFree: false,
            unlockAfterDays: 3,
            filePath: "book/第五篇｜真实的社会/第11章｜中国社会商业生态的未来/11.5 社会分层的最终逻辑.md",
          },
        ],
      },
    ],
  },
]

export const specialSections = {
  preface: {
    id: "preface",
    title: "序言｜为什么我每天早上6点在Soul开播?",
    price: 0,
    isFree: true,
    filePath: "book/序言｜为什么我每天早上6点在Soul开播?.md",
  },
  epilogue: {
    id: "epilogue",
    title: "尾声｜终极答案:努力不是关键,选择才是",
    price: 0,
    isFree: true,
    filePath: "book/尾声｜终极答案:努力不是关键,选择才是.md",
  },
}

export const FULL_BOOK_PRICE = getFullBookPrice()

export function getAllSections(): Section[] {
  const sections: Section[] = []
  if (typeof window !== "undefined") {
    const customSections = JSON.parse(localStorage.getItem("custom_sections") || "[]")
    sections.push(...customSections)
  }
  bookData.forEach((part) => {
    part.chapters.forEach((chapter) => {
      sections.push(...chapter.sections)
    })
  })
  return sections
}

export function getSectionById(id: string): Section | undefined {
  if (typeof window !== "undefined") {
    const customSections = JSON.parse(localStorage.getItem("custom_sections") || "[]") as Section[]
    const customSection = customSections.find((s) => s.id === id)
    if (customSection) return customSection
  }

  for (const part of bookData) {
    for (const chapter of part.chapters) {
      const section = chapter.sections.find((s) => s.id === id)
      if (section) return section
    }
  }
  return undefined
}

export function getChapterBySection(sectionId: string): { part: Part; chapter: Chapter } | undefined {
  for (const part of bookData) {
    for (const chapter of part.chapters) {
      if (chapter.sections.some((s) => s.id === sectionId)) {
        return { part, chapter }
      }
    }
  }
  return undefined
}

export function isSectionUnlocked(section: Section): boolean {
  if (section.isFree) return true
  if (!section.unlockAfterDays || !section.createdAt) return false

  const createdDate = new Date(section.createdAt)
  const unlockDate = new Date(createdDate.getTime() + section.unlockAfterDays * 24 * 60 * 60 * 1000)
  return new Date() >= unlockDate
}

export function addCustomSection(section: Omit<Section, "createdAt">): Section {
  const newSection: Section = {
    ...section,
    createdAt: new Date().toISOString(),
  }

  if (typeof window !== "undefined") {
    const customSections = JSON.parse(localStorage.getItem("custom_sections") || "[]") as Section[]
    customSections.push(newSection)
    localStorage.setItem("custom_sections", JSON.stringify(customSections))
  }

  return newSection
}