import { baseURL, baseURLStorage } from '@root/config'
import { getConfigApp } from '@/utils/config'
import type { FileResource } from '@/api/file'

export function unwrapApiRecord(payload: unknown): Record<string, any> | null {
  if (!payload || typeof payload !== 'object') return null

  const data = payload as Record<string, unknown>

  if (data.data && typeof data.data === 'object') {
    return unwrapApiRecord(data.data)
  }

  if (data.product && typeof data.product === 'object') {
    return unwrapApiRecord(data.product)
  }

  if (data.row && typeof data.row === 'object') {
    return unwrapApiRecord(data.row)
  }

  return data as Record<string, any>
}

export function unwrapFileResource(payload: unknown): FileResource | null {
  if (!payload || typeof payload !== 'object') return null

  const data = payload as Record<string, unknown>

  if (
    typeof data.full_src === 'string' ||
    typeof data.src === 'string' ||
    typeof data.path === 'string' ||
    typeof data.url === 'string'
  ) {
    return normalizeFileResource(data as Record<string, any>)
  }

  if (data.data && typeof data.data === 'object') {
    return unwrapFileResource(data.data)
  }

  if (data.file && typeof data.file === 'object') {
    return unwrapFileResource(data.file)
  }

  return null
}

/** Site domain + API base, e.g. https://example.ir/server */
export function getFileBaseUrl(): string {
  const fromConfig =
    getConfigApp('node_server') ||
    getConfigApp('storage_url') ||
    getConfigApp('storage') ||
    getConfigApp('file_url') ||
    getConfigApp('file_base')

  if (typeof fromConfig === 'string' && fromConfig.trim()) {
    return preferHttpsFileUrl(fromConfig.replace(/\/$/, ''))
  }

  const storageBase = baseURLStorage || baseURL
  if (storageBase) {
    return preferHttpsFileUrl(storageBase.replace(/\/$/, ''))
  }

  if (typeof window !== 'undefined') {
    return `${window.location.origin}/server`.replace(/\/$/, '')
  }

  return ''
}

/** صفحهٔ ادمین https است؛ URLهای http پشت CDN در پیش‌نمایش بلاک می‌شوند. */
export function preferHttpsFileUrl(url: string): string {
  if (/localhost|127\.0\.0\.1/i.test(url)) return url
  return url.replace(/^http:\/\//i, 'https://')
}

/**
 * Turns API paths like "storage/1405/02/27/file.jpg" into a full URL.
 */
export function toAbsoluteFileUrl(path?: string | null): string | undefined {
  if (!path?.trim()) return undefined

  const trimmed = path.trim()

  if (/^https?:\/\//i.test(trimmed)) {
    return preferHttpsFileUrl(trimmed)
  }

  const storageMatch = trimmed.match(/(?:^|\/)storage\/(.+)$/i)
  if (storageMatch) {
    const base = getFileBaseUrl()
    if (base) {
      return preferHttpsFileUrl(`${base}/storage/${storageMatch[1]}`)
    }
  }

  if (/^[a-z0-9.-]+(?:\/server)?\/storage\//i.test(trimmed)) {
    return `https://${trimmed.replace(/^\/+/, '')}`
  }

  const base = getFileBaseUrl()
  if (!base) return undefined

  if (trimmed.startsWith('/')) {
    return preferHttpsFileUrl(`${base}${trimmed}`)
  }

  return preferHttpsFileUrl(`${base}/${trimmed.replace(/^\//, '')}`)
}

function isBareFileName(value: string): boolean {
  return !value.includes('/') && /\.[a-z0-9]+$/i.test(value)
}

export function normalizeFileResource(record: Record<string, any>): FileResource | null {
  const src =
    typeof record.src === 'string'
      ? record.src
      : typeof record.path === 'string'
        ? record.path
        : typeof record.storage_path === 'string'
          ? record.storage_path
          : undefined

  if (!src && !record.full_src) return null

  const absoluteUrl = toAbsoluteFileUrl(record.full_src || src)
  if (!absoluteUrl) return null

  return {
    id: record.id != null ? Number(record.id) : undefined,
    name: record.title || record.original_name || record.name,
    src,
    full_src: absoluteUrl
  }
}

/** Normalize upload API response: { id, src: "storage/...", title, ... } */
export function normalizeUploadFileResponse(response: unknown): FileResource | null {
  const record = unwrapApiRecord(response)
  if (!record) return null
  return normalizeFileResource(record)
}

export function resolveFileImageUrl(file?: FileResource | null): string | undefined {
  if (!file) return undefined
  if (file.full_src) return file.full_src
  return toAbsoluteFileUrl(file.src || file.path)
}

export function pickRawFileFromRecord(record: Record<string, any>): Record<string, any> | null {
  for (const key of ['file', 'original_image', 'image', 'index_image', 'product_image']) {
    const value = record[key]
    if (value && typeof value === 'object') return value as Record<string, any>
  }
  return null
}

export function resolveProductImageSrc(record: Record<string, any>): string | undefined {
  const fromRelation = resolveFileImageUrl(pickImageFromRecord(record))
  if (fromRelation) return fromRelation

  const rawFile = pickRawFileFromRecord(record)
  if (rawFile?.src) return toAbsoluteFileUrl(rawFile.src)

  if (typeof record.file_src === 'string') return toAbsoluteFileUrl(record.file_src)
  if (typeof record.image_src === 'string') return toAbsoluteFileUrl(record.image_src)

  return undefined
}

export function pickImageFromRecord(record: Record<string, any>): FileResource | null {
  const keys = [
    'file',
    'original_image',
    'image',
    'index_image',
    'product_image',
    'image_file',
    'uploaded_file'
  ]

  for (const key of keys) {
    const value = record[key]
    const resource = unwrapFileResource(value)
    if (resource) return resource

    if (value && typeof value === 'object') {
      const normalized = normalizeFileResource(value as Record<string, any>)
      if (normalized) return normalized
    }
  }

  if (typeof record.src === 'string') {
    return normalizeFileResource(record)
  }

  return null
}

export function applyFileToUploadList(
  fileId: number | string,
  file?: FileResource | null,
  fallbackName = 'image'
) {
  const imageSrc = resolveFileImageUrl(file)
  if (!imageSrc) return []

  return [
    {
      uid: String(fileId),
      name: file?.name || fallbackName,
      status: 'done',
      url: imageSrc,
      thumbUrl: imageSrc
    }
  ]
}