import fs from "fs";
import fastify from "fastify";
import cookie from "@fastify/cookie";
import cors from "@fastify/cors";
import jwt from "@fastify/jwt";
import fastifyStatic from "@fastify/static";
import { migrate, db } from "./db.js";
import { log, enableLogPersistence, flushLogs } from "./logger.js";
import * as store from "./store.js";
import { createRegistry } from "./registry.js";
import { COOKIE, OPEN_API_ROUTES } from "./src/api/auth.js";
import authPlugin from "./src/api/auth.js";
import usersPlugin from "./src/api/users.js";
import scriptsPluginFactory from "./src/api/scripts.js";
import workflowsPluginFactory from "./src/api/workflows.js";
import runsPlugin from "./src/api/runs.js";
import dashboardPluginFactory from "./src/api/dashboard.js";
import secretsPlugin from "./src/api/secrets.js";
import kvPlugin from "./src/api/kv.js";
import variablesPlugin from "./src/api/variables.js";
import httpPagesPlugin from "./src/api/http-pages.js";
import httpAuthsPlugin from "./src/api/http-auths.js";
import { WEB_DIST } from "./paths.js";
import { resolveSecretsKeyMaterial } from "./secrets.js";

await migrate();
enableLogPersistence();

const jwtSecret =
  process.env.JERAPAH_FLOW_JWT_SECRET ??
  process.env.SCRUNNER_JWT_SECRET ??
  (process.env.NODE_ENV === "production" ? "" : "scrunner-dev-secret");

if (!jwtSecret) {
  log.error("JERAPAH_FLOW_JWT_SECRET is required in production");
  process.exit(1);
}

try {
  resolveSecretsKeyMaterial();
} catch (err) {
  log.error(err instanceof Error ? err.message : String(err));
  process.exit(1);
}

const server = fastify({ loggerInstance: log });

await server.register(cookie);
await server.register(jwt, {
  secret: jwtSecret,
  cookie: {
    cookieName: COOKIE,
    signed: false,
  },
});
await server.register(cors, {
  origin: process.env.JERAPAH_FLOW_CORS_ORIGIN ?? process.env.SCRUNNER_CORS_ORIGIN ?? "http://localhost:5173",
  credentials: true,
});

server.decorate("authenticate", async function authenticate(req, reply) {
  try {
    await req.jwtVerify();
  } catch {
    return reply.code(401).send({ error: "unauthorized" });
  }
});

server.decorate("requireAdmin", async function requireAdmin(req, reply) {
  if (req.user?.role !== "admin") {
    return reply.code(403).send({ error: "forbidden" });
  }
});

const registry = createRegistry(server);
registry.registerWorkflows();
registry.registerHttpTriggers();
registry.registerCronTriggers();
registry.registerPruneJob();

await server.register(
  async (api) => {
    api.addHook("onRequest", async (req, reply) => {
      const raw = (req.url || "").split("?")[0];
      const stripped = raw.replace(/^\/api/, "") || "/";
      const routeUrl = req.routeOptions?.url || stripped;
      const open =
        OPEN_API_ROUTES.has(`${req.method} ${routeUrl}`) ||
        OPEN_API_ROUTES.has(`${req.method} ${stripped}`);
      if (open) return;
      await server.authenticate(req, reply);
    });
    await api.register(authPlugin);
    await api.register(usersPlugin);
    await api.register(secretsPlugin);
    await api.register(variablesPlugin);
    await api.register(kvPlugin);
    await api.register(httpPagesPlugin);
    await api.register(httpAuthsPlugin);
    await api.register(scriptsPluginFactory(registry));
    await api.register(workflowsPluginFactory(registry));
    await api.register(runsPlugin);
    await api.register(dashboardPluginFactory(registry));
  },
  { prefix: "/api" },
);

server.post(
  "/admin/workflows/reregister",
  { onRequest: [server.authenticate] },
  async (_req, reply) => {
    registry.reregister();
    return reply.send({ message: "Workflows refreshed" });
  },
);

server.get(
  "/admin/runs",
  { onRequest: [server.authenticate] },
  async (req, reply) => {
    const q = /** @type {Record<string, string | undefined>} */ (req.query);
    const limit = q.limit ? Number(q.limit) : undefined;
    const runs = await store.listRuns({
      owner: q.owner,
      workflow: q.workflow,
      status: q.status,
      limit: Number.isFinite(limit) ? limit : undefined,
      before: q.before,
    });
    return reply.send({ runs });
  },
);

server.get(
  "/admin/runs/:id",
  { onRequest: [server.authenticate] },
  async (req, reply) => {
    const { id } = /** @type {{ id: string }} */ (req.params);
    const run = await store.getRun(id);
    if (!run) {
      return reply.code(404).send({ error: "run not found" });
    }
    return reply.send(run);
  },
);

if (fs.existsSync(WEB_DIST)) {
  await server.register(fastifyStatic, {
    root: WEB_DIST,
    wildcard: false,
  });
  server.setNotFoundHandler((req, reply) => {
    const url = req.raw.url ?? "";
    if (
      url.startsWith("/api") ||
      url.startsWith("/u/") ||
      url.startsWith("/admin")
    ) {
      return reply.code(404).send({ error: "not found" });
    }
    return reply.sendFile("index.html");
  });
}

async function shutdown() {
  try {
    await flushLogs();
    await db.destroy();
  } catch (err) {
    log.error({ err }, "shutdown error");
  }
  process.exit(0);
}

process.on("SIGINT", shutdown);
process.on("SIGTERM", shutdown);

const port = Number(process.env.PORT ?? 9000);

server
  .listen({
    host: "0.0.0.0",
    port,
  })
  .then(() => {
    log.info(`Server is running on port ${port}`);
  })
  .catch((err) => {
    log.error({ err }, "failed to start server");
    process.exit(1);
  });