import { Router } from "express";
import fs from "fs";
import path from "path";
import { authMiddleware } from "../middleware/authMiddleware.js";
import { deploymentService } from "../services/deploymentService.js";
import { DeploymentProject } from "../models/deploymentProject.js";
import { DeploymentRun } from "../models/deploymentRun.js";
import fs from "fs";

const router = Router();

const faviconCandidates = [
  "favicon.ico",
  "public/favicon.ico",
  "public/favicon.png",
  "public/favicon.svg",
  "assets/favicon.ico"
];

function getContentType(filePath: string) {
  if (filePath.endsWith(".svg")) return "image/svg+xml";
  if (filePath.endsWith(".png")) return "image/png";
  return "image/x-icon";
}

router.get("/:id/favicon", async (req, res) => {
  const { id } = req.params;
  const project = await DeploymentProject.findById(id).lean();
  if (!project) return res.status(404).end();
  const rootPath = path.resolve(project.rootPath);

  for (const candidate of faviconCandidates) {
    const filePath = path.join(rootPath, candidate);
    if (!fs.existsSync(filePath)) continue;
    res.setHeader("Content-Type", getContentType(filePath));
    res.setHeader("Cache-Control", "public, max-age=300");
    return fs.createReadStream(filePath).pipe(res);
  }

  return res.status(404).end();
});

router.get("/branches", async (req, res) => {
  authMiddleware(req, res, async () => {
  const repoUrl = req.query.repoUrl as string | undefined;
  if (!repoUrl) {
    return res.status(400).json({ message: "repoUrl gerekli" });
  }
  try {
    const branches = await deploymentService.listRemoteBranches(repoUrl);
    return res.json({ branches });
  } catch (err) {
    return res.status(400).json({ message: "Branch listesi alınamadı", error: (err as Error).message });
  }
  });
});

router.get("/compose-files", async (req, res) => {
  authMiddleware(req, res, async () => {
    const repoUrl = req.query.repoUrl as string | undefined;
    const branch = req.query.branch as string | undefined;
    if (!repoUrl || !branch) {
      return res.status(400).json({ message: "repoUrl ve branch gerekli" });
    }
    try {
      const files = await deploymentService.listRemoteComposeFiles(repoUrl, branch);
      return res.json({ files });
    } catch (err) {
      return res.status(400).json({ message: "Compose listesi alınamadı", error: (err as Error).message });
    }
  });
});

router.get("/metrics/summary", async (req, res) => {
  authMiddleware(req, res, async () => {
    const since = new Date();
    since.setDate(since.getDate() - 7);

    const dailyStats = await DeploymentRun.aggregate([
      { $match: { startedAt: { $gte: since } } },
      {
        $group: {
          _id: { $dateToString: { format: "%Y-%m-%d", date: "$startedAt" } },
          total: { $sum: 1 },
          success: {
            $sum: {
              $cond: [{ $eq: ["$status", "success"] }, 1, 0]
            }
          },
          failed: {
            $sum: {
              $cond: [{ $eq: ["$status", "failed"] }, 1, 0]
            }
          },
          avgDurationMs: { $avg: "$durationMs" }
        }
      },
      { $sort: { _id: 1 } }
    ]);

    const recentRuns = await DeploymentRun.find()
      .sort({ startedAt: -1 })
      .limit(10)
      .populate("project", "name repoUrl rootPath")
      .lean();
    return res.json({ recentRuns, dailyStats });
  });
});

router.get("/", async (_req, res) => {
  authMiddleware(_req, res, async () => {
  const projects = await DeploymentProject.find().sort({ createdAt: -1 }).lean();
  return res.json(projects);
  });
});

router.get("/:id", async (req, res) => {
  authMiddleware(req, res, async () => {
  const { id } = req.params;
  const project = await DeploymentProject.findById(id).lean();
  if (!project) return res.status(404).json({ message: "Deployment bulunamadı" });
  const runs = await DeploymentRun.find({ project: id })
    .sort({ startedAt: -1 })
    .limit(20)
    .lean();
  return res.json({ project, runs });
  });
});

router.post("/", async (req, res) => {
  authMiddleware(req, res, async () => {
  const { name, repoUrl, branch, composeFile, port } = req.body;
  if (!name || !repoUrl || !branch || !composeFile) {
    return res.status(400).json({ message: "Tüm alanlar gerekli" });
  }
  try {
    const created = await deploymentService.createProject({
      name,
      repoUrl,
      branch,
      composeFile,
      port
    });
    deploymentService
      .runDeployment(created._id.toString(), { message: "First deployment" })
      .catch(() => undefined);
    return res.status(201).json(created);
  } catch (err) {
    return res.status(400).json({ message: "Deployment oluşturulamadı", error: (err as Error).message });
  }
  });
});

router.put("/:id", async (req, res) => {
  authMiddleware(req, res, async () => {
  const { id } = req.params;
  const { name, repoUrl, branch, composeFile, port } = req.body;
  if (!name || !repoUrl || !branch || !composeFile) {
    return res.status(400).json({ message: "Tüm alanlar gerekli" });
  }
  try {
    const updated = await deploymentService.updateProject(id, {
      name,
      repoUrl,
      branch,
      composeFile,
      port
    });
    if (!updated) return res.status(404).json({ message: "Deployment bulunamadı" });
    return res.json(updated);
  } catch (err) {
    return res.status(400).json({ message: "Deployment güncellenemedi", error: (err as Error).message });
  }
  });
});

router.delete("/:id", async (req, res) => {
  authMiddleware(req, res, async () => {
  const { id } = req.params;
  try {
    const project = await DeploymentProject.findById(id);
    if (!project) return res.status(404).json({ message: "Deployment bulunamadı" });
    await deploymentService.cleanupProjectResources(project);
    await DeploymentProject.findByIdAndDelete(id);
    await DeploymentRun.deleteMany({ project: id });
    await fs.promises.rm(project.rootPath, { recursive: true, force: true });
    return res.json({ success: true });
  } catch (err) {
    return res.status(400).json({ message: "Deployment silinemedi", error: (err as Error).message });
  }
  });
});

router.post("/:id/run", async (req, res) => {
  authMiddleware(req, res, async () => {
  const { id } = req.params;
  const project = await DeploymentProject.findById(id);
  if (!project) return res.status(404).json({ message: "Deployment bulunamadı" });
  deploymentService
    .runDeployment(id, { message: "Elle deploy tetikleme" })
    .catch(() => undefined);
  return res.json({ queued: true });
  });
});

export default router;