import { Context } from "hono";

const getJsonObjectValue = <T = any>(
    value: string | any
): T | null => {
    if (value == undefined || value == null) {
        return null;
    }
    if (typeof value === "object") {
        return value as T;
    }
    if (typeof value !== "string") {
        return null;
    }
    try {
        return JSON.parse(value) as T;
    } catch (e) {
        console.error(`GetJsonValue: Failed to parse ${value}`, e);
    }
    return null;
}


export const getJsonSetting = async <T = any>(
    c: Context<HonoCustomType>, key: string
): Promise<T | null> => {
    const value = await getSetting(c, key);
    if (!value) {
        return null;
    }
    try {
        return JSON.parse(value) as T;
    } catch (e) {
        console.error(`GetJsonSetting: Failed to parse ${key}`, e);
    }
    return null;
}

export const getSetting = async (
    c: Context<HonoCustomType>, key: string
): Promise<string | null> => {
    try {
        const value = await c.env.DB.prepare(
            `SELECT value FROM settings where key = ?`
        ).bind(key).first<string>("value");
        return value;
    } catch (error) {
        console.error(`GetSetting: Failed to get ${key}`, error);
    }
    return null;
}

export const saveSetting = async (
    c: Context<HonoCustomType>,
    key: string, value: string
) => {
    await c.env.DB.prepare(
        `INSERT INTO settings (key, value) VALUES (?, ?)`
        + ` ON CONFLICT(key) DO UPDATE SET value = ?, updated_at = datetime('now')`
    ).bind(key, value, value).run();
    return true;
}

export default {
    getJsonObjectValue,
    getJsonSetting,
    getSetting,
    saveSetting,
}