import { task } from "@trigger.dev/sdk/v3";
import { z } from "zod";
import { getSupabaseClient } from "../../shared/supabase/client";
import { logger } from "../../shared/utils/logger";
import { loadIcpConfig, applyHardFilters, applySignalFilters } from "../lib/icp-filter";
import { isDuplicate, isSuppressed } from "../lib/deduplicator";
import { scrapeCompanyWebsite } from "../lib/web-scraper";
import { scrapeLinkedInCompany } from "../lib/linkedin-scraper";
import { normalizeCompany } from "../lib/normalizer";
import { enrichContacts } from "../lib/contact-enricher";
import { searchCompanies } from "../providers/serper";
import { getRegionConfig } from "../lib/rotation";

// ─── Input schema ─────────────────────────────────────────────

const ManualDiscoveryInput = z.object({
  region: z.enum(["US", "UK", "AU", "UAE", "SA", "SG"]),
  industry: z.string().optional(),
  customKeywords: z.array(z.string()).optional(),
  maxCompanies: z.number().min(1).max(50).default(20),
  triggeredBy: z.string().default("manual"), // slack username or "api"
});

export type ManualDiscoveryInput = z.infer<typeof ManualDiscoveryInput>;

// ─── Manual Discovery Task ────────────────────────────────────

export const manualDiscoveryTask = task({
  id: "manual-discovery",
  maxDuration: 1800, // 30 min max

  run: async (payload: ManualDiscoveryInput) => {
    const input = ManualDiscoveryInput.parse(payload);
    logger.info({ input }, "🎯 Manual discovery started");

    const icp = await loadIcpConfig();
    const regionConfig = getRegionConfig(input.region);

    const keywords = input.customKeywords?.length
      ? input.customKeywords
      : icp.keywords;

    const industries = input.industry
      ? [input.industry]
      : regionConfig.industries.slice(0, 3); // limit to 3 for manual runs

    let totalDiscovered = 0;
    let totalQualified = 0;

    for (const industry of industries) {
      const results = await searchCompanies(input.region, industry, keywords);
      const capped = results.slice(0, input.maxCompanies);

      for (const result of capped) {
        const status = await processManualCompany(result, input.region, icp, industry);
        if (status !== "skip") totalDiscovered++;
        if (status === "qualified") totalQualified++;
      }
    }

    // ── Audit log ─────────────────────────────────────────────
    const db = getSupabaseClient();
    await db.from("audit_log").insert({
      action: "manual_discovery_completed",
      entity_type: "discovery_run",
      entity_id: null,
      actor: input.triggeredBy,
      details: {
        region: input.region,
        industry: input.industry ?? "all",
        totalDiscovered,
        totalQualified,
      },
    });

    logger.info({ totalDiscovered, totalQualified }, "✅ Manual discovery completed");
    return { region: input.region, totalDiscovered, totalQualified };
  },
});

// ─── Processing pipeline (same logic as auto, extracted) ─────

async function processManualCompany(
  result: { domain: string; title: string; link: string; snippet: string },
  region: string,
  icp: Awaited<ReturnType<typeof loadIcpConfig>>,
  industry: string
): Promise<"skip" | "new" | "qualified"> {
  const { domain } = result;
  const db = getSupabaseClient();

  if (await isSuppressed(domain)) return "skip";
  const { isDupe } = await isDuplicate(domain, result.title);
  if (isDupe) return "skip";

  const website = await scrapeCompanyWebsite(domain);
  const gate1 = applyHardFilters(website, icp, region);
  if (!gate1.passed) return "skip";

  const gate2 = applySignalFilters(website, icp);

  let linkedin = null;
  if (website.linkedinUrl) {
    linkedin = await scrapeLinkedInCompany(website.linkedinUrl).catch(() => null);
  }

  const normalized = normalizeCompany(result as any, website, linkedin, region, "manual");
  const { data: saved, error } = await db
    .from("companies")
    .insert({ ...normalized, industry })
    .select("id")
    .single();

  if (error || !saved) return "skip";

  if (!gate2.passed) {
    await db.from("companies").update({ status: "nurture" }).eq("id", saved.id);
    return "new";
  }

  const contactsSaved = await enrichContacts(
    saved.id,
    domain,
    normalized.name,
    normalized.employee_count,
    industry,
    website.text.slice(0, 300),
    website.html,
    normalized.linkedin_url,
    "manual-" + saved.id
  );

  await db.from("companies").update({ status: "profiled" }).eq("id", saved.id);

  if (contactsSaved.length > 0) {
    const { profilingTask } = await import("../../profiling/trigger-tasks/profiling-router");
    await profilingTask.trigger({
      company_id: saved.id,
      domain,
      name: normalized.name,
      region,
      source: "manual",
    });
    return "qualified";
  }

  return "new";
}