/**
 * POST /api/ai/conversation/reset
 * Body OR query: { projectId }
 *
 * Deletes the conversation history for a project the caller owns.
 *
 * Closes S-03. Also migrated off the legacy Firebase admin path onto Postgres
 * to match `/api/ai/conversation`.
 */
import { NextResponse } from "next/server";
import { query } from "@/lib/db-postgres";
import { withTenantProject } from "@/lib/server/api-handler";
import { log } from "@/lib/server/logger";

export const POST = withTenantProject(
  async (_request, _ctx, { project }) => {
    try {
      await query(`DELETE FROM chat_conversations WHERE project_id = $1`, [
        project.id,
      ]);
      return NextResponse.json({ success: true });
    } catch (err) {
      log.error("ai/conversation/reset failed", {
        route: "api.ai.conversation.reset",
        projectId: project.id,
        err: err instanceof Error ? err.message : String(err),
      });
      return NextResponse.json(
        {
          error: "Failed to reset conversation",
          details: err instanceof Error ? err.message : String(err),
        },
        { status: 500 },
      );
    }
  },
  { source: "body", paramName: "projectId" },
);