import { NextRequest, NextResponse } from "next/server";
import { getPool } from "@/lib/database";
import bcrypt from "bcryptjs";
import jwt from "jsonwebtoken";

export async function POST(request: NextRequest) {
  try {
    const { email, password } = await request.json();

    // Validate input
    if (!email || !password) {
      return NextResponse.json(
        { error: "Email and password are required" },
        { status: 400 }
      );
    }

    const pool = getPool();
    const client = await pool.connect();

    try {
      // Find user by email
      const result = await client.query(
        `SELECT id, email, password_hash, first_name, last_name, role, subscription_tier, created_at
         FROM users WHERE email = $1`,
        [email]
      );

      if (result.rows.length === 0) {
        return NextResponse.json(
          { error: "Invalid email or password" },
          { status: 401 }
        );
      }

      const user = result.rows[0];

      // Verify password
      const isValidPassword = await bcrypt.compare(
        password,
        user.password_hash
      );
      if (!isValidPassword) {
        return NextResponse.json(
          { error: "Invalid email or password" },
          { status: 401 }
        );
      }

      // Create JWT token
      const token = jwt.sign(
        {
          userId: user.id,
          email: user.email,
          role: user.role,
        },
        process.env.JWT_SECRET || "your-secret-key",
        { expiresIn: "7d" }
      );

      return NextResponse.json({
        success: true,
        token,
        user: {
          id: user.id,
          email: user.email,
          FirstName: user.first_name,
          LastName: user.last_name,
          role: user.role,
          subscriptionTier: user.subscription_tier,
          createdAt: user.created_at,
        },
      });
    } finally {
      client.release();
    }
  } catch (error) {
    console.error("Login error:", error);
    return NextResponse.json(
      { error: "Internal server error" },
      { status: 500 }
    );
  }
}