/**
 * Set password procedure - sets or changes user password
 */

import { ORPCError } from "@orpc/server";
import {
  hashPassword,
  validatePassword,
  verifyPassword,
} from "../../utils/password.js";
import { meRoute } from "./_base.js";

/**
 * Set password handler
 * - Requires authentication
 * - If user has existing password, currentPassword is required
 * - Validates new password strength using zxcvbn
 */
export const setPassword = meRoute.setPassword.handler(
  async ({ input, context }) => {
    const { currentPassword, newPassword } = input;

    // Fetch current password hash
    const user = await context.db
      .selectFrom("users")
      .select(["password_hash"])
      .where("id", "=", context.user.id)
      .executeTakeFirstOrThrow();

    // If user has a password, verify current password
    if (user.password_hash) {
      if (!currentPassword) {
        throw new ORPCError("BAD_REQUEST", {
          message: "Current password required",
        });
      }
      const valid = await verifyPassword(currentPassword, user.password_hash);
      if (!valid) {
        throw new ORPCError("BAD_REQUEST", {
          message: "Current password is incorrect",
        });
      }
    }

    // Validate new password strength
    const validation = validatePassword(newPassword, [context.user.email]);
    if (!validation.valid) {
      throw new ORPCError("BAD_REQUEST", {
        message: validation.feedback[0] ?? "Password is too weak",
      });
    }

    // Hash and update
    const newHash = await hashPassword(newPassword);
    await context.db
      .updateTable("users")
      .set({ password_hash: newHash, updated_at: new Date() })
      .where("id", "=", context.user.id)
      .execute();

    return { success: true };
  },
);