/**
 * Backfill SuperAdmin tenant appearance from live registries (by domain Origin)
 * and users.json fallback. Preserves named CSS modes (e.g. limangold).
 *
 * Usage:
 *   npm run prisma:backfill-appearance
 */
import * as fs from 'fs'
import * as path from 'path'
import { Prisma, PrismaClient } from '@prisma/client'
import {
  buildHamkarUiFromBrand,
  buildKhanegiUiFromColors,
  pickRegistryPayload,
  resolveAvatarUrl,
  type RegistryUser,
} from './lib/appearance-builders'

const prisma = new PrismaClient()

const REGISTRY_URLS = [
  'https://nerkh.gold/get_user',
  'https://ah.aygingold.ir/get_user',
  'https://tablo.talasevin.ir/get_user',
  'https://abshode-service.montgit.ir/server/get_user',
]

type JsonUser = {
  id: number
  name?: string
  name_fa?: string
  avatar?: string | null
  domains?: string | string[] | null
  color?: string | null
  secondary_color?: string | null
  background_color?: string | null
  mode?: string | null
  app_ui_config?: unknown
  deleted_at?: string | null
  node_server?: string | null
}

function normalizeHost(value: string) {
  return value
    .trim()
    .toLowerCase()
    .replace(/^https?:\/\//, '')
    .split('/')[0]
    .split(':')[0]
}

function parseDomains(raw: unknown): string[] {
  if (!raw) return []
  if (Array.isArray(raw)) return raw.map(String).map(normalizeHost).filter(Boolean)
  if (typeof raw === 'string') {
    try {
      const parsed = JSON.parse(raw)
      if (Array.isArray(parsed)) return parsed.map(String).map(normalizeHost).filter(Boolean)
    } catch {
      return []
    }
  }
  return []
}

function readTenantHosts(tenant: { domain: string; domains: unknown; appUrl?: string | null }) {
  const hosts = new Set<string>()
  hosts.add(normalizeHost(tenant.domain))
  for (const d of parseDomains(tenant.domains)) hosts.add(d)
  if (tenant.appUrl) hosts.add(normalizeHost(tenant.appUrl))
  return [...hosts].filter(Boolean)
}

function loadUsersJson(): JsonUser[] {
  const file = path.join(__dirname, 'data', 'users.json')
  if (!fs.existsSync(file)) return []
  try {
    return JSON.parse(fs.readFileSync(file, 'utf8')) as JsonUser[]
  } catch {
    return []
  }
}

function findJsonUser(tenant: { domain: string; domains: unknown; notes?: string | null; slug: string }, rows: JsonUser[]) {
  const hosts = new Set(readTenantHosts(tenant))
  const external = tenant.notes?.match(/externalId:(\d+)/)?.[1]

  for (const row of rows) {
    if (row.deleted_at) continue
    if (external && String(row.id) === external) return row
    const rowHosts = parseDomains(row.domains)
    if (rowHosts.some((h) => hosts.has(h))) return row
    if (row.name && normalizeHost(row.name) === normalizeHost(tenant.slug)) return row
  }
  return null
}

async function fetchRegistryByOrigin(domain: string): Promise<{ data: RegistryUser; base: string } | null> {
  const origin = `https://${domain}`
  for (const base of REGISTRY_URLS) {
    const controller = new AbortController()
    const timer = setTimeout(() => controller.abort(), 8000)
    try {
      const res = await fetch(base, {
        headers: {
          Accept: 'application/json',
          Origin: origin,
          Referer: `${origin}/`,
        },
        signal: controller.signal,
      })
      if (!res.ok) continue
      const json = await res.json()
      const data = pickRegistryPayload(json)
      // Reject empty / unrelated responses: must mention domain in node_server/domains-ish or have name
      const nodeHost = normalizeHost(String(data.node_server || ''))
      const related =
        nodeHost.includes(domain.replace(/^www\./, '')) ||
        domain.includes(normalizeHost(String(data.name || ''))) ||
        Boolean(data.avatar || data.color || data.secondary_color || data.app_ui_config)
      if (!related && !data.name) continue
      return { data, base }
    } catch {
      /* next */
    } finally {
      clearTimeout(timer)
    }
  }
  return null
}

function jsonToRegistry(row: JsonUser): RegistryUser {
  return {
    avatar: row.avatar,
    color: row.color,
    secondary_color: row.secondary_color,
    background_color: row.background_color,
    name: row.name,
    name_fa: row.name_fa,
    mode: row.mode,
    theme: row.mode,
    app_ui_config: row.app_ui_config,
  }
}

async function main() {
  const jsonRows = loadUsersJson()
  const tenants = await prisma.tenant.findMany({
    where: { isActive: true },
    orderBy: [{ product: 'asc' }, { nameFa: 'asc' }],
  })

  const summary = {
    total: tenants.length,
    updated: 0,
    fromLive: 0,
    fromJson: 0,
    skipped: 0,
    hamkar: 0,
    khanegi: 0,
    namedModes: 0,
  }

  for (const tenant of tenants) {
    const hosts = readTenantHosts(tenant)
    let hit: { data: RegistryUser; base: string; source: 'live' | 'json' } | null = null

    for (const host of hosts) {
      const live = await fetchRegistryByOrigin(host)
      if (live) {
        hit = { ...live, source: 'live' }
        break
      }
    }

    if (!hit) {
      const row = findJsonUser(tenant, jsonRows)
      if (row) {
        hit = {
          data: jsonToRegistry(row),
          base: 'https://nerkh.gold/get_user',
          source: 'json',
        }
      }
    }

    if (!hit) {
      summary.skipped += 1
      console.warn(`SKIP ${tenant.product} ${tenant.domain}`)
      continue
    }

    const { data, base, source } = hit
    if (source === 'live') summary.fromLive += 1
    else summary.fromJson += 1

    // Prefer live/json values only — never keep invented SA defaults like #1d4ed8
    const primary = data.color ?? null
    const secondary = data.secondary_color ?? null
    const background = data.background_color ?? null
    const avatar = resolveAvatarUrl(data.avatar, base) || tenant.avatarUrl
    const registryMode = String(data.mode || data.theme || '').trim() || null
    if (registryMode && registryMode !== 'dynamicMode') summary.namedModes += 1

    const existingUi = (tenant.appUiConfig as Record<string, any> | null) || null
    let appUiConfig: Prisma.InputJsonValue

    if (tenant.product === 'hamkar') {
      const managed = existingUi?.kind === 'hamkar' && existingUi?.settingsManaged === true
      const built = buildHamkarUiFromBrand({
        primaryColor: primary,
        secondaryColor: secondary,
        backgroundColor: background,
        settingsManaged: managed,
        registryMode: registryMode || existingUi?.registryMode || 'dynamicMode',
        settings: managed ? existingUi.settings : undefined,
      })
      appUiConfig = built as unknown as Prisma.InputJsonValue
      summary.hamkar += 1
    } else {
      const built = buildKhanegiUiFromColors({
        primary: primary || tenant.primaryColor,
        secondary: secondary || tenant.secondaryColor,
        background: background || tenant.backgroundColor,
        existing:
          data.app_ui_config ||
          (existingUi?.schemaId === 'ui-config' ? existingUi : null),
      })
      appUiConfig = {
        ...(built as object),
        registryMode: registryMode || existingUi?.registryMode || null,
      } as unknown as Prisma.InputJsonValue
      summary.khanegi += 1
    }

    const notes = [
      tenant.notes || '',
      `appearance:backfill-${source}`,
      registryMode ? `registryMode:${registryMode}` : '',
    ]
      .filter(Boolean)
      .join(' | ')

    await prisma.tenant.update({
      where: { id: tenant.id },
      data: {
        avatarUrl: avatar,
        primaryColor: primary,
        secondaryColor: secondary,
        backgroundColor: background,
        appUiConfig,
        notes,
      },
    })

    summary.updated += 1
    console.log(
      `OK ${tenant.product} ${tenant.domain} ← ${source}${registryMode ? ` mode=${registryMode}` : ''} color=${primary || '-'}`,
    )
  }

  console.log('\nSummary:', summary)
}

main()
  .catch((error) => {
    console.error(error)
    process.exitCode = 1
  })
  .finally(async () => {
    await prisma.$disconnect()
  })