/**
 * After agency Google OAuth: match Drive + GA4 + GSC (+ Google Ads if env)
 * into every client ficha and sync Orgánico.
 */

import { serviceHeaders, supabaseUrl } from '@/lib/agency';
import {
  applyMatches,
  getAgencyOAuthStatus,
  listDriveFolders,
  matchFoldersToTenants,
} from '@/lib/google-drive';
import {
  applyOrganicMatches,
  listGa4Properties,
  listGscSites,
  matchOrganicToTenants,
  syncAllConnectedOrganic,
} from '@/lib/google-organic';
import {
  discoverAndMatch,
  googleAdsConfigured,
} from '@/lib/ads-discovery';

export type GoogleBootstrapResult = {
  ok: boolean;
  email?: string | null;
  drive?: { linked: number; folders: number; ambiguous: number; error?: string };
  organic?: {
    ga4Linked: number;
    gscLinked: number;
    ga4Visible: number;
    gscVisible: number;
    daysWritten: number;
    tenantsSynced: number;
    error?: string;
  };
  googleAds?: {
    linked: number;
    accounts: number;
    error?: string;
  };
  message: string;
};

export async function bootstrapAgencyGoogle(opts?: {
  /** Also pull Google Ads MCC accounts into fichas (needs GOOGLE_ADS_* env). */
  includeGoogleAds?: boolean;
  /** Sync organic_daily after matching (default true). */
  syncOrganic?: boolean;
  organicDays?: number;
}): Promise<GoogleBootstrapResult> {
  const status = await getAgencyOAuthStatus();
  if (!status.connected) {
    return {
      ok: false,
      message: 'Conecta Google (marketing@) en Agencia primero.',
    };
  }

  const headers = serviceHeaders();
  if (!headers) {
    return { ok: false, message: 'no service role' };
  }

  const tRes = await fetch(
    `${supabaseUrl()}/rest/v1/tenants?select=id,name,slug&order=name.asc`,
    { headers, cache: 'no-store' }
  );
  if (!tRes.ok) {
    return {
      ok: false,
      email: status.email,
      message: `tenants: ${(await tRes.text()).slice(0, 160)}`,
    };
  }
  const tenants = (await tRes.json()) as {
    id: string;
    name: string;
    slug: string;
  }[];

  const result: GoogleBootstrapResult = {
    ok: true,
    email: status.email,
    message: '',
  };

  // --- Drive ---
  try {
    const folders = await listDriveFolders();
    const matches = await matchFoldersToTenants(tenants, folders);
    const applied = await applyMatches(matches);
    result.drive = {
      linked: applied.linked,
      folders: folders.length,
      ambiguous: matches.filter((m) => m.status === 'ambiguous').length,
    };
  } catch (e) {
    result.drive = {
      linked: 0,
      folders: 0,
      ambiguous: 0,
      error: e instanceof Error ? e.message : 'drive error',
    };
  }

  // --- GA4 + GSC ---
  try {
    const [ga4, gsc] = await Promise.all([
      status.hasAnalytics !== false
        ? listGa4Properties()
        : Promise.resolve([]),
      status.hasSearchConsole !== false
        ? listGscSites()
        : Promise.resolve([]),
    ]);
    const matches = await matchOrganicToTenants(tenants, ga4, gsc);
    const applied = await applyOrganicMatches(
      matches.filter(
        (m) =>
          (m.ga4 && m.ga4.score >= 50) || (m.gsc && m.gsc.score >= 40)
      )
    );
    let daysWritten = 0;
    let tenantsSynced = 0;
    if (opts?.syncOrganic !== false) {
      const sync = await syncAllConnectedOrganic({
        days: opts?.organicDays ?? 28,
      });
      daysWritten = sync.results.reduce((a, r) => a + (r.daysWritten || 0), 0);
      tenantsSynced = sync.synced;
    }
    result.organic = {
      ga4Linked: applied.ga4,
      gscLinked: applied.gsc,
      ga4Visible: ga4.length,
      gscVisible: gsc.length,
      daysWritten,
      tenantsSynced,
    };
  } catch (e) {
    result.organic = {
      ga4Linked: 0,
      gscLinked: 0,
      ga4Visible: 0,
      gscVisible: 0,
      daysWritten: 0,
      tenantsSynced: 0,
      error: e instanceof Error ? e.message : 'organic error',
    };
  }

  // --- Google Ads (separate token / MCC env) ---
  if (opts?.includeGoogleAds !== false && googleAdsConfigured()) {
    try {
      const disc = await discoverAndMatch({
        apply: true,
        providers: ['google_ads'],
      });
      const g = disc.google;
      result.googleAds = {
        linked: g?.linked || 0,
        accounts: g?.accounts || 0,
        error: g?.error,
      };
    } catch (e) {
      result.googleAds = {
        linked: 0,
        accounts: 0,
        error: e instanceof Error ? e.message : 'gads error',
      };
    }
  }

  const parts: string[] = [];
  if (result.drive) {
    parts.push(
      result.drive.error
        ? `Drive: ${result.drive.error}`
        : `Drive ${result.drive.linked}/${result.drive.folders}`
    );
  }
  if (result.organic) {
    parts.push(
      result.organic.error
        ? `Orgánico: ${result.organic.error}`
        : `GA4 ${result.organic.ga4Linked} · GSC ${result.organic.gscLinked} · ${result.organic.daysWritten} días sync`
    );
  }
  if (result.googleAds) {
    parts.push(
      result.googleAds.error
        ? `Ads: ${result.googleAds.error}`
        : `Google Ads ${result.googleAds.linked}/${result.googleAds.accounts}`
    );
  }
  result.message = parts.join(' · ') || 'Sin cambios';
  result.ok = !result.drive?.error || !result.organic?.error;
  // ok if at least one channel succeeded
  result.ok = Boolean(
    (result.drive && !result.drive.error) ||
      (result.organic && !result.organic.error) ||
      (result.googleAds && !result.googleAds.error)
  );
  return result;
}