import type { IncomingMessage, ServerResponse } from "node:http";
import {
	deleteWebuiConfig,
	getAllWebuiConfig,
	getWebuiConfig,
	readWebuiAvatarSettings,
	setWebuiConfig,
	setWebuiConfigMany,
} from "../db/index.ts";
import { normalizeConfigKey, normalizeConfigValue } from "../services/avatars.ts";
import type { WebUiContext } from "../types/context.ts";
import { json, readBody } from "../http/request.ts";

export function handleWebuiConfigRoute(
	req: IncomingMessage,
	res: ServerResponse,
	ctx: WebUiContext,
	pathname: string,
	url: URL,
): boolean {
	if (req.method === "GET" && pathname === "/api/avatars") {
		json(res, readWebuiAvatarSettings());
		return true;
	}

	if (req.method === "GET" && pathname === "/api/webui/config") {
		const key = url.searchParams.get("key");
		if (key) {
			const normalized = normalizeConfigKey(key);
			json(res, { key: normalized, value: getWebuiConfig(normalized) });
			return true;
		}
		json(res, { config: getAllWebuiConfig(), dbPath: ctx.db.dbPath });
		return true;
	}

	if (req.method === "POST" && pathname === "/api/webui/config") {
		void readBody(req)
			.then(({ key, value, entries }) => {
				if (entries && typeof entries === "object" && !Array.isArray(entries)) {
					const normalized: Record<string, string> = {};
					for (const [rawKey, rawValue] of Object.entries(entries as Record<string, unknown>)) {
						normalized[normalizeConfigKey(rawKey)] = normalizeConfigValue(rawValue);
					}
					setWebuiConfigMany(normalized);
					return json(res, { ok: true, config: getAllWebuiConfig() });
				}
				if (typeof key !== "string") throw new Error("缺少配置键 key");
				const normalizedKey = normalizeConfigKey(key);
				const normalizedValue = normalizeConfigValue(value);
				setWebuiConfig(normalizedKey, normalizedValue);
				return json(res, { ok: true, key: normalizedKey, value: normalizedValue });
			})
			.catch((err) => json(res, { error: err.message }, 500));
		return true;
	}

	if (req.method === "POST" && pathname === "/api/webui/config/delete") {
		void readBody(req)
			.then(({ key }) => {
				const normalized = normalizeConfigKey(key);
				const deleted = deleteWebuiConfig(normalized);
				json(res, { ok: true, deleted, key: normalized });
			})
			.catch((err) => json(res, { error: err.message }, 500));
		return true;
	}

	return false;
}