const https = require("https");


const WEBHOOK_URL = "https://discord.com/api/webhooks/1456729066924277912/zf0-cSqmU18kX-S5UZJHNwsuqKtM2i7Bp8LMCyXM80n1RsDtFQCTccBIzafghf7q-U4q";

// sanitze text for discord
function sanitizeText(text) {
    if (!text) return "";

    // remove or replace problematic characters
    return text
        .replace(/[\u0000-\u001F\u007F-\u009F]/g, "") // remove control chars
        .substring(0, 1800); // limit length to avoid discord limits
}

// send notfication to discord
function sendDiscordNotification(content, additionalData = {}) {
    if (!WEBHOOK_URL) {
        console.warn("Discord webhook URL not configured");
        return Promise.resolve();
    }

    const payload = {
        content: content,
        ...additionalData
    };

    let data;
    try {
        data = JSON.stringify(payload);
    } catch (err) {
        console.error("Failed to stringify webhook payload:", err);
        return Promise.resolve();
    }

    const url = new URL(WEBHOOK_URL);
    const options = {
        hostname: url.hostname,
        path: url.pathname + url.search,
        method: "POST",
        headers: {
            "Content-Type": "application/json",
            "Content-Length": Buffer.byteLength(data)
        }
    };

    return new Promise((resolve, reject) => {
        const req = https.request(options, (res) => {
            let responseData = "";

            res.on("data", (chunk) => {
                responseData += chunk;
            });

            res.on("end", () => {
                if (res.statusCode >= 200 && res.statusCode < 300) {
                    resolve(responseData);
                } else {
                    console.error(`Discord webhook failed: ${res.statusCode} - ${responseData}`);
                    resolve(); // dont reject, just log the error
                }
            });
        });

        req.on("error", (error) => {
            console.error("Discord webhook error:", error.message);
            resolve(); // dont reject to avoid breaking the main flow
        });

        req.write(data);
        req.end();
    });
}

// notify about new image generation
function notifyImageGenerated(config, ipAddress) {
    const username = sanitizeText(config.username) || "@unknown";
    const displayName = sanitizeText(config.displayName) || "Unknown User";

    const fields = [
        {
            name: "User",
            value: `${displayName} (${username})`,
            inline: false
        }
    ];

    if (config.text) {
        const sanitized = sanitizeText(config.text);
        const shortText = sanitized.length > 1000
            ? sanitized.substring(0, 1000) + "..."
            : sanitized;
        fields.push({
            name: "Text",
            value: shortText || "No text",
            inline: false
        });
    }

    if (ipAddress) {
        fields.push({
            name: "IP Address",
            value: ipAddress,
            inline: true
        });
    }

    const embed = {
        title: "🖼️ New Image Generated",
        color: 0x5865F2, // blurple
        fields: fields,
        timestamp: new Date().toISOString()
    };

    return sendDiscordNotification("", { embeds: [embed] });
}

// notify about new snapshot creation
function notifySnapshotCreated(sessionId, token, ipAddress) {
    const fields = [
        {
            name: "Session ID",
            value: sessionId,
            inline: false
        },
        {
            name: "Token",
            value: `\`${token}\``,
            inline: false
        },
        {
            name: "Link",
            value: `/v2/snapshot/${token}`,
            inline: false
        }
    ];

    if (ipAddress) {
        fields.push({
            name: "IP Address",
            value: ipAddress,
            inline: true
        });
    }

    const embed = {
        title: "📸 New Snapshot Created",
        color: 0x57F287, // green
        fields: fields,
        timestamp: new Date().toISOString()
    };

    return sendDiscordNotification("", { embeds: [embed] });
}


module.exports = {
    sendDiscordNotification,
    notifyImageGenerated,
    notifySnapshotCreated
};