/**
 * Payload CMS API functions — powered by @c2s/payload-contracts
 *
 * Uses the shared API client for transport (tenant isolation, fetch caching).
 * Returns data typed with local interfaces for component compatibility.
 *
 * Navigation uses contracts types directly (schema matches).
 * Other types use 'as unknown as' bridge since local types differ
 * from CMS types (meta vs seo, id string vs number, etc.).
 */
import { cms } from "./cms"
import type { Navigation } from "@c2s/payload-contracts/types"
import type {
  Page,
  Post,
  Favorite,
  Series,
  Testimonial,
  FAQ,
  SeoSettings,
  PaginatedResponse,
  SiteSettings,
} from "./types"

export type { Navigation }

const TENANT_ID = process.env.NEXT_PUBLIC_TENANT_ID || "9"

// Pages
export async function getPage(slug: string, locale = "de"): Promise<Page | null> {
  const result = await cms.pages.getPage(slug, {
    locale: locale as "de" | "en",
    depth: 2,
  })
  return result as unknown as Page | null
}

export async function getPages(options: {
  limit?: number
  page?: number
  locale?: string
} = {}): Promise<PaginatedResponse<Page>> {
  const result = await cms.pages.getPages({
    limit: options.limit || 100,
    page: options.page || 1,
    locale: (options.locale || "de") as "de" | "en",
    depth: 1,
  })
  return result as unknown as PaginatedResponse<Page>
}

// Posts
export async function getPost(slug: string, locale = "de"): Promise<Post | null> {
  const result = await cms.posts.getPost(slug, {
    locale: locale as "de" | "en",
    depth: 2,
  })
  return result as unknown as Post | null
}

export async function getPosts(options: {
  type?: string
  category?: string
  series?: string
  limit?: number
  page?: number
  locale?: string
  featured?: boolean
} = {}): Promise<PaginatedResponse<Post>> {
  try {
    const where: Record<string, unknown> = {}
    if (options.featured) where["isFeatured][equals"] = "true"

    const result = await cms.posts.getPosts({
      type: options.type,
      category: options.category,
      series: options.series,
      limit: options.limit || 10,
      page: options.page || 1,
      locale: (options.locale || "de") as "de" | "en",
      where,
    })
    return result as unknown as PaginatedResponse<Post>
  } catch {
    return { docs: [], totalDocs: 0, limit: 10, totalPages: 0, page: 1, pagingCounter: 1, hasPrevPage: false, hasNextPage: false, prevPage: null, nextPage: null }
  }
}

// Navigation — single document per tenant with mainMenu + footerMenu
// Uses contracts Navigation type directly (no bridge needed)
export async function getNavigation(): Promise<Navigation | null> {
  try {
    return await cms.navigation.getNavigation({ depth: 2 })
  } catch {
    return null
  }
}

// Site Settings
export async function getSiteSettings(): Promise<SiteSettings | null> {
  try {
    const result = await cms.settings.getSiteSettings({ depth: 2 })
    return result as unknown as SiteSettings | null
  } catch {
    return null
  }
}

// SEO Settings (Global)
export async function getSeoSettings(): Promise<SeoSettings | null> {
  try {
    const result = await cms.settings.getSeoSettings()
    return result as unknown as SeoSettings | null
  } catch {
    return null
  }
}

// Testimonials
export async function getTestimonials(options: {
  limit?: number
  locale?: string
} = {}): Promise<PaginatedResponse<Testimonial>> {
  const result = await cms.client.getCollection("testimonials", {
    limit: options.limit || 10,
    locale: (options.locale || "de") as "de" | "en",
    depth: 1,
  })
  return result as unknown as PaginatedResponse<Testimonial>
}

// FAQs
export async function getFAQs(options: {
  category?: string
  limit?: number
  locale?: string
} = {}): Promise<PaginatedResponse<FAQ>> {
  const result = await cms.client.getCollection("faqs", {
    limit: options.limit || 50,
    locale: (options.locale || "de") as "de" | "en",
    sort: "order",
    depth: 1,
    where: options.category ? { "category][equals": options.category } : undefined,
  })
  return result as unknown as PaginatedResponse<FAQ>
}

// BlogWoman: Favorites
export async function getFavorites(options: {
  category?: string
  badge?: string
  limit?: number
  page?: number
  locale?: string
} = {}): Promise<PaginatedResponse<Favorite>> {
  try {
    const where: Record<string, unknown> = { "isActive][equals": "true" }
    if (options.category) where["category][equals"] = options.category
    if (options.badge) where["badge][equals"] = options.badge

    const result = await cms.client.getCollection("favorites", {
      limit: options.limit || 12,
      page: options.page || 1,
      locale: (options.locale || "de") as "de" | "en",
      depth: 1,
      where,
    })
    return result as unknown as PaginatedResponse<Favorite>
  } catch {
    return { docs: [], totalDocs: 0, limit: 12, totalPages: 0, page: 1, pagingCounter: 1, hasPrevPage: false, hasNextPage: false, prevPage: null, nextPage: null }
  }
}

export async function getFavorite(slug: string, locale = "de"): Promise<Favorite | null> {
  const data = await cms.client.getCollection("favorites", {
    locale: locale as "de" | "en",
    depth: 1,
    where: { "slug][equals": slug, "isActive][equals": "true" },
    limit: 1,
  })
  return (data.docs[0] as unknown as Favorite) ?? null
}

// BlogWoman: Series
export async function getSeries(options: {
  limit?: number
  locale?: string
} = {}): Promise<PaginatedResponse<Series>> {
  try {
    const result = await cms.client.getCollection("series", {
      limit: options.limit || 20,
      locale: (options.locale || "de") as "de" | "en",
      depth: 2,
      where: { "isActive][equals": "true" },
    })
    return result as unknown as PaginatedResponse<Series>
  } catch {
    return { docs: [], totalDocs: 0, limit: 20, totalPages: 0, page: 1, pagingCounter: 1, hasPrevPage: false, hasNextPage: false, prevPage: null, nextPage: null }
  }
}

export async function getSeriesBySlug(slug: string, locale = "de"): Promise<Series | null> {
  const data = await cms.client.getCollection("series", {
    locale: locale as "de" | "en",
    depth: 2,
    where: { "slug][equals": slug, "isActive][equals": "true" },
    limit: 1,
  })
  return (data.docs[0] as unknown as Series) ?? null
}

// Newsletter Subscription
export async function subscribeNewsletter(
  email: string,
  firstName?: string,
  source = "website"
): Promise<{ success: boolean; message?: string }> {
  return cms.post("/api/newsletter/subscribe", {
    email,
    firstName,
    tenantId: Number(TENANT_ID),
    source,
  })
}

// Contact Form Submission
export async function submitContactForm(data: {
  name: string
  email: string
  phone?: string
  subject: string
  message: string
  formId?: number
}): Promise<{ success: boolean; message?: string }> {
  return cms.post("/api/form-submissions", {
    form: data.formId || 1,
    submissionData: [
      { field: "name", value: data.name },
      { field: "email", value: data.email },
      { field: "phone", value: data.phone || "" },
      { field: "subject", value: data.subject },
      { field: "message", value: data.message },
    ],
  })
}