import { defineEndpoint } from "@directus/extensions-sdk";
import { AcquisitionService, PdfEngine } from "@mintel/pdf/server";
import {
  render,
  SiteAuditTemplate,
  ProjectEstimateTemplate,
} from "@mintel/mail";
import { createElement } from "react";
import * as path from "path";
import * as fs from "fs";

export default defineEndpoint((router, { services, env }) => {
  const { ItemsService, MailService } = services;

  router.get("/ping", (req, res) => res.send("pong"));

  router.post("/audit/:id", async (req: any, res: any) => {
    const { id } = req.params;
    const leadsService = new ItemsService("leads", {
      schema: req.schema,
      accountability: req.accountability,
    });

    try {
      const lead = await leadsService.readOne(id);
      if (!lead) return res.status(404).send({ error: "Lead not found" });

      await leadsService.updateOne(id, { status: "auditing" });

      const acqService = new AcquisitionService(env.OPENROUTER_API_KEY);
      const result = await acqService.runFullSequence(
        lead.website_url,
        lead.briefing,
        lead.comments,
      );

      await leadsService.updateOne(id, {
        status: "audit_ready",
        ai_state: result.state,
        audit_context: JSON.stringify(result.usage),
      });

      res.send({ success: true, result });
    } catch (error: any) {
      console.error("Audit failed:", error);
      await leadsService.updateOne(id, {
        status: "new",
        comments: `Audit failed: ${error.message}`,
      });
      res.status(500).send({ error: error.message });
    }
  });

  router.post("/audit-email/:id", async (req: any, res: any) => {
    const { id } = req.params;
    const { ItemsService, MailService } = services;
    const leadsService = new ItemsService("leads", {
      schema: req.schema,
      accountability: req.accountability,
    });
    const _peopleService = new ItemsService("people", {
      schema: req.schema,
      accountability: req.accountability,
    });
    const companiesService = new ItemsService("companies", {
      schema: req.schema,
      accountability: req.accountability,
    });
    const mailService = new MailService({
      schema: req.schema,
      accountability: req.accountability,
    });

    try {
      const lead = await leadsService.readOne(id, {
        fields: ["*", "company.*", "contact_person.*"],
      });
      if (!lead || !lead.ai_state)
        return res.status(400).send({ error: "Lead or Audit not ready" });

      let recipientEmail = lead.contact_email;
      let companyName = lead.company?.name || lead.company_name;

      if (lead.contact_person) {
        recipientEmail = lead.contact_person.email || recipientEmail;

        if (lead.contact_person.company) {
          const personCompany = await companiesService.readOne(
            lead.contact_person.company,
          );
          companyName = personCompany?.name || companyName;
        }
      }

      if (!recipientEmail)
        return res.status(400).send({ error: "No recipient email found" });

      const auditHighlights = [
        `Projekt-Typ: ${lead.ai_state.projectType === "website" ? "Website" : "Web App"}`,
        ...(lead.ai_state.sitemap || [])
          .slice(0, 3)
          .map((item: any) => `Potenzial in: ${item.category}`),
      ];

      const html = await render(
        createElement(SiteAuditTemplate, {
          companyName: companyName,
          websiteUrl: lead.website_url,
          auditHighlights,
        }),
      );

      await mailService.send({
        to: recipientEmail,
        subject: `Analyse Ihrer Webpräsenz: ${companyName}`,
        html,
      });

      await leadsService.updateOne(id, {
        status: "contacted",
        last_contacted_at: new Date().toISOString(),
      });

      res.send({ success: true });
    } catch (error: any) {
      console.error("Audit Email failed:", error);
      res.status(500).send({ error: error.message });
    }
  });

  router.post("/estimate/:id", async (req: any, res: any) => {
    const { id } = req.params;
    const leadsService = new ItemsService("leads", {
      schema: req.schema,
      accountability: req.accountability,
    });

    try {
      const lead = await leadsService.readOne(id);
      if (!lead || !lead.ai_state)
        return res.status(400).send({ error: "Lead or AI state not found" });

      const pdfEngine = new PdfEngine();
      const filename = `estimate_${id}_${Date.now()}.pdf`;
      const storageRoot = env.STORAGE_LOCAL_ROOT || "./storage";
      const outputPath = path.join(storageRoot, filename);

      await pdfEngine.generateEstimatePdf(lead.ai_state, outputPath);

      await leadsService.updateOne(id, {
        audit_pdf_path: filename,
      });

      res.send({ success: true, filename });
    } catch (error: any) {
      console.error("PDF Generation failed:", error);
      res.status(500).send({ error: error.message });
    }
  });

  router.post("/estimate-email/:id", async (req: any, res: any) => {
    const { id } = req.params;
    const leadsService = new ItemsService("leads", {
      schema: req.schema,
      accountability: req.accountability,
    });
    const _peopleService = new ItemsService("people", {
      schema: req.schema,
      accountability: req.accountability,
    });
    const companiesService = new ItemsService("companies", {
      schema: req.schema,
      accountability: req.accountability,
    });
    const mailService = new MailService({
      schema: req.schema,
      accountability: req.accountability,
    });

    try {
      const lead = await leadsService.readOne(id, {
        fields: ["*", "company.*", "contact_person.*"],
      });
      if (!lead || !lead.audit_pdf_path)
        return res.status(400).send({ error: "PDF not generated" });

      let recipientEmail = lead.contact_email;
      let companyName = lead.company?.name || lead.company_name;

      if (lead.contact_person) {
        recipientEmail = lead.contact_person.email || recipientEmail;

        if (lead.contact_person.company) {
          const personCompany = await companiesService.readOne(
            lead.contact_person.company,
          );
          companyName = personCompany?.name || companyName;
        }
      }

      if (!recipientEmail)
        return res.status(400).send({ error: "No recipient email found" });

      const html = await render(
        createElement(ProjectEstimateTemplate, {
          companyName: companyName,
        }),
      );

      const storageRoot = env.STORAGE_LOCAL_ROOT || "./storage";
      const attachmentPath = path.join(storageRoot, lead.audit_pdf_path);

      await mailService.send({
        to: recipientEmail,
        subject: `Ihre Projekt-Schätzung: ${companyName}`,
        html,
        attachments: [
          {
            filename: `Angebot_${companyName}.pdf`,
            content: fs.readFileSync(attachmentPath),
          },
        ],
      });

      await leadsService.updateOne(id, {
        status: "contacted",
        last_contacted_at: new Date().toISOString(),
      });

      res.send({ success: true });
    } catch (error: any) {
      console.error("Estimate Email failed:", error);
      res.status(500).send({ error: error.message });
    }
  });
});