import { Hono } from "jsr:@hono/hono@4";
import { serveStatic } from "jsr:@hono/hono@4/deno";
import { deleteCookie, getCookie } from "jsr:@hono/hono@4/cookie";
import { sql } from "../server/db.ts";
import { valkey } from "../server/valkey.ts";
import {
  getAuthenticatedUser,
  getCookieDomain,
  isGlobalAdmin,
  isSafeRedirectUrl,
} from "../server/auth-session.ts";
import { auditWrapper } from "../server/audit.ts";
import { LoginPage } from "./components/LoginPage.tsx";
import { RegisterPage } from "./components/RegisterPage.tsx";
import { SessionsPage } from "./components/SessionsPage.tsx";
import { PasskeysPage } from "./components/PasskeysPage.tsx";
import { AuditLogPage } from "./components/AuditLogPage.tsx";
import { AdminUsersPage } from "./components/AdminUsersPage.tsx";
import { AdminUserDetailsPage } from "./components/AdminUserDetailsPage.tsx";
import { AAGUIDPage } from "./components/AAGUIDPage.tsx";
import { RecoveryPage } from "./components/RecoveryPage.tsx";

import { AdminAppsPage } from "./components/AdminAppsPage.tsx";
import { AdminRolesPage } from "./components/AdminRolesPage.tsx";
import { AdminInvitesPage } from "./components/AdminInvitesPage.tsx";
import { AppLaunchpadPage } from "./components/AppLaunchpadPage.tsx";

const uiApp: Hono = new Hono();

// Explicit Side Effect: Route rendering
uiApp.get("/", (c) => {
  return c.redirect("/login");
});

uiApp.get("/logout", async (c) => {
  const sessionId = getCookie(c, "session_id");
  const rawRedirect = c.req.query("redirect");
  let safeRedirect = null;
  const userIp = c.req.header("x-forwarded-for") || "127.0.0.1";
  let userId = null;

  if (sessionId) {
    try {
      // Get user ID for auditing before we delete the session
      const authUser = await getAuthenticatedUser(c);
      if (authUser) {
        userId = authUser.userId;
      }

      await valkey.del(sessionId);
      await sql`DELETE FROM sessions WHERE id = ${sessionId}`;
    } catch (_e) {
      // Best effort cleanup
    }
  }

  if (rawRedirect) {
    if (isSafeRedirectUrl(rawRedirect)) {
      safeRedirect = rawRedirect;
    } else {
      auditWrapper.auditLog(
        userId,
        "open_redirect_intercepted",
        "logout_redirect",
        { raw_url: rawRedirect },
        userIp,
      );
    }
  }

  auditWrapper.auditLog(
    userId,
    "logout_success",
    "session",
    null,
    userIp,
  );

  const rpID = Deno.env.get("RP_ID") || "";
  const cookieDomain = getCookieDomain(rpID);

  if (cookieDomain) {
    deleteCookie(c, "session_id", {
      domain: cookieDomain,
      path: "/",
      httpOnly: true,
      secure: true,
      sameSite: "Lax",
    });
  }
  deleteCookie(c, "session_id", {
    path: "/",
    httpOnly: true,
    secure: true,
    sameSite: "Lax",
  });

  if (safeRedirect) {
    return c.redirect(`/login?redirect=${encodeURIComponent(safeRedirect)}`);
  }
  return c.redirect("/login");
});

uiApp.get("/login", (c) => {
  return c.html(LoginPage());
});

uiApp.get("/recovery", (c) => {
  return c.html(RecoveryPage());
});

uiApp.get("/register", (c) => {
  const initialCode = c.req.query("code") || "";
  return c.html(RegisterPage({ initialCode }));
});

uiApp.get("/dashboard", async (c) => {
  const auth = await getAuthenticatedUser(c);
  if (!auth) {
    return c.redirect("/login");
  }

  const isAdmin = await isGlobalAdmin(auth.userId);

  let apps = [];
  if (isAdmin) {
    apps = await sql`
      SELECT id, name, description, domain, 'Admin' as role
      FROM apps
      WHERE domain IS NOT NULL
      ORDER BY name ASC
    ` as any[];
  } else {
    apps = await sql`
      SELECT a.id, a.name, a.description, a.domain, g.role
      FROM apps a
      JOIN grants g ON a.id = g.app_id
      WHERE g.user_id = ${auth.userId} AND a.domain IS NOT NULL
      ORDER BY a.name ASC
    ` as any[];
  }

  return c.html(AppLaunchpadPage({ apps: apps as any, isAdmin }));
});

uiApp.get("/dashboard/sessions", async (c) => {
  const auth = await getAuthenticatedUser(c);
  if (!auth) {
    return c.redirect("/login");
  }

  const isAdmin = await isGlobalAdmin(auth.userId);

  const sessions = await sql`
    SELECT id, created_at, expires_at
    FROM sessions
    WHERE user_id = ${auth.userId} AND expires_at > NOW()
    ORDER BY created_at DESC
  `;

  return c.html(
    SessionsPage({ sessions, currentSessionId: auth.sessionId, isAdmin }),
  );
});

uiApp.get("/dashboard/passkeys", async (c) => {
  const auth = await getAuthenticatedUser(c);
  if (!auth) {
    return c.redirect("/login");
  }

  const isAdmin = await isGlobalAdmin(auth.userId);

  const passkeys = await sql`
    SELECT id, credential_id, counter
    FROM passkeys
    WHERE user_id = ${auth.userId}
  `;

  return c.html(PasskeysPage({ passkeys, isAdmin }));
});

// Admin Routes
uiApp.get("/admin", (c) => {
  return c.redirect("/admin/users");
});

uiApp.get("/admin/users", async (c) => {
  const auth = await getAuthenticatedUser(c);
  if (!auth) {
    return c.redirect("/login");
  }

  const isAdmin = await isGlobalAdmin(auth.userId);
  if (!isAdmin) {
    return c.redirect("/dashboard");
  }

  const users = await sql`
    SELECT id, username, display_name, account_status
    FROM users
    ORDER BY username ASC
  `;

  return c.html(AdminUsersPage({ users }));
});

uiApp.get("/admin/apps", async (c) => {
  const auth = await getAuthenticatedUser(c);
  if (!auth) {
    return c.redirect("/login");
  }

  const isAdmin = await isGlobalAdmin(auth.userId);
  if (!isAdmin) {
    return c.redirect("/dashboard");
  }

  const apps = await sql`
    SELECT a.id, a.name, a.spiffe_id, a.description, a.created_at,
           COUNT(g.id) AS active_grants_count
    FROM apps a
    LEFT JOIN grants g ON a.id = g.app_id
    GROUP BY a.id, a.name, a.spiffe_id, a.description, a.created_at
    ORDER BY a.created_at ASC
  `;

  return c.html(AdminAppsPage({ apps }));
});

uiApp.get("/admin/roles", async (c) => {
  const auth = await getAuthenticatedUser(c);
  if (!auth) {
    return c.redirect("/login");
  }

  const isAdmin = await isGlobalAdmin(auth.userId);
  if (!isAdmin) {
    return c.redirect("/dashboard");
  }

  const roles = await sql`
    SELECT r.id, r.name, r.description, r.app_id, r.created_at,
           a.name AS app_name
    FROM roles r
    LEFT JOIN apps a ON r.app_id = a.id
    ORDER BY r.app_id NULLS FIRST, r.name ASC
  `;

  const apps = await sql`
    SELECT id, name, spiffe_id FROM apps ORDER BY name ASC
  `;

  return c.html(AdminRolesPage({ roles, apps }));
});

uiApp.get("/admin/invites", async (c) => {
  const auth = await getAuthenticatedUser(c);
  if (!auth) {
    return c.redirect("/login");
  }

  const isAdmin = await isGlobalAdmin(auth.userId);
  if (!isAdmin) {
    return c.redirect("/dashboard");
  }

  const invites = await sql`
    SELECT i.id, i.code, i.role, i.max_uses, i.uses_count, i.auto_activate, i.expires_at, i.created_at, i.used_at,
           a.name AS app_name, a.id AS app_id,
           u.username AS used_by_username
    FROM invites i
    LEFT JOIN apps a ON i.app_id = a.id
    LEFT JOIN users u ON i.used_by = u.id
    ORDER BY i.created_at DESC
  `;

  const apps = await sql`
    SELECT id, name, spiffe_id FROM apps ORDER BY name ASC
  `;

  const allRoles = await sql`
    SELECT id, name, description, app_id FROM roles ORDER BY name ASC
  `;

  return c.html(AdminInvitesPage({ invites, apps, allRoles }));
});

uiApp.get("/admin/aaguid", async (c) => {
  const auth = await getAuthenticatedUser(c);
  if (!auth) {
    return c.redirect("/login");
  }

  const isAdmin = await isGlobalAdmin(auth.userId);
  if (!isAdmin) {
    return c.redirect("/dashboard");
  }

  const allowlist = await sql`
    SELECT id, aaguid, description, created_at
    FROM aaguid_allowlist
    ORDER BY created_at DESC
  `;

  return c.html(AAGUIDPage({ allowlist }));
});

uiApp.get("/admin/users/:id", async (c) => {
  const auth = await getAuthenticatedUser(c);
  if (!auth) {
    return c.redirect("/login");
  }

  const isAdmin = await isGlobalAdmin(auth.userId);
  if (!isAdmin) {
    return c.redirect("/admin/users");
  }

  const targetUserId = c.req.param("id");
  const user = await sql`
    SELECT id, username, display_name, account_status
    FROM users
    WHERE id = ${targetUserId}
  `.then((res) => res[0]);

  if (!user) {
    return c.redirect("/admin/users");
  }

  const sessions = await sql`
    SELECT id, created_at, expires_at
    FROM sessions
    WHERE user_id = ${targetUserId} AND expires_at > NOW()
    ORDER BY created_at DESC
  `;

  const passkeys = await sql`
    SELECT id, credential_id, counter
    FROM passkeys
    WHERE user_id = ${targetUserId}
  `;

  const grants = await sql`
    SELECT g.id, g.app_id, g.role, g.created_at, a.name AS app_name, a.spiffe_id
    FROM grants g
    JOIN apps a ON g.app_id = a.id
    WHERE g.user_id = ${targetUserId}
    ORDER BY a.name ASC
  `;

  const allApps = await sql`
    SELECT id, name, spiffe_id FROM apps ORDER BY name ASC
  `;

  const allRoles = await sql`
    SELECT id, name, description, app_id FROM roles ORDER BY name ASC
  `;

  return c.html(
    AdminUserDetailsPage({
      user,
      sessions,
      passkeys,
      grants,
      allApps,
      allRoles,
    }),
  );
});

uiApp.get("/admin/audit-logs", async (c) => {
  const auth = await getAuthenticatedUser(c);
  if (!auth) {
    return c.redirect("/login");
  }

  const isAdmin = await isGlobalAdmin(auth.userId);
  if (!isAdmin) {
    return c.redirect("/dashboard");
  }

  const logs = await sql`
    SELECT a.id, a.action, a.resource, a.details, a.ip_address, a.created_at, u.username as user
    FROM audit_records a
    LEFT JOIN users u ON a.user_id = u.id
    ORDER BY a.created_at DESC
    LIMIT 100
  `;

  return c.html(AuditLogPage({ logs }));
});

// Explicit Side Effect: Serving static assets (client-side JS) with no-cache headers to prevent stale browser caches
uiApp.use("/public/*", async (c, next) => {
  await next();
  c.header("Cache-Control", "no-cache, no-store, must-revalidate");
});

uiApp.get(
  "/public/*",
  serveStatic({
    root: "./ui",
    rewriteRequestPath: (path) => path.replace(/^\/public/, "/public"),
  }),
);

export { uiApp };