/**
 * @fileoverview DevRant API Client for Rantii
 * @author retoor <retoor@molodetz.nl>
 * @description HTTP client for communicating with the DevRant API
 * @keywords api, client, devrant, http, fetch
 */

const API_BASE_URL = window.location.hostname === 'localhost' ? '/api/' : 'https://dr.molodetz.nl/api/';
const APP_ID = 3;

class ApiClient {
    constructor() {
        this.tokenId = null;
        this.tokenKey = null;
        this.userId = null;
    }

    setAuth(tokenId, tokenKey, userId) {
        this.tokenId = tokenId;
        this.tokenKey = tokenKey;
        this.userId = userId;
    }

    clearAuth() {
        this.tokenId = null;
        this.tokenKey = null;
        this.userId = null;
    }

    isAuthenticated() {
        return this.tokenId !== null && this.tokenKey !== null;
    }

    buildParams(params = {}) {
        const result = { app: APP_ID, ...params };
        if (this.isAuthenticated()) {
            result.token_id = this.tokenId;
            result.token_key = this.tokenKey;
            result.user_id = this.userId;
        }
        return result;
    }

    buildUrl(endpoint) {
        const path = endpoint.startsWith('/') ? endpoint.slice(1) : endpoint;
        return API_BASE_URL + path;
    }

    async request(method, endpoint, params = {}, timeout = 30000) {
        const url = this.buildUrl(endpoint);
        const allParams = this.buildParams(params);

        const controller = new AbortController();
        const timeoutId = setTimeout(() => controller.abort(), timeout);

        const config = {
            method,
            headers: {},
            signal: controller.signal
        };

        try {
            let fullUrl = url;
            if (method === 'GET' || method === 'DELETE') {
                const queryString = new URLSearchParams(allParams).toString();
                fullUrl = queryString ? `${url}?${queryString}` : url;
            } else {
                config.headers['Content-Type'] = 'application/x-www-form-urlencoded';
                config.body = new URLSearchParams(allParams).toString();
            }

            const response = await fetch(fullUrl, config);
            clearTimeout(timeoutId);

            if (!response.ok && response.status >= 500) {
                return { success: false, error: `Server error: ${response.status}` };
            }

            const data = await response.json();
            return data;
        } catch (error) {
            clearTimeout(timeoutId);
            if (error.name === 'AbortError') {
                return { success: false, error: 'Request timed out' };
            }
            return { success: false, error: error.message };
        }
    }

    async get(endpoint, params = {}) {
        return this.request('GET', endpoint, params);
    }

    async post(endpoint, params = {}) {
        return this.request('POST', endpoint, params);
    }

    async delete(endpoint, params = {}) {
        return this.request('DELETE', endpoint, params);
    }

    async login(username, password) {
        const response = await this.post('/users/auth-token', {
            username,
            password
        });
        if (response.success && response.auth_token) {
            this.setAuth(
                response.auth_token.id,
                response.auth_token.key,
                response.auth_token.user_id
            );
            return {
                success: true,
                authToken: response.auth_token
            };
        }
        return { success: false, error: response.error || 'Login failed' };
    }

    async getRants(sort = 'recent', limit = 20, skip = 0) {
        const response = await this.get('/devrant/rants', { sort, limit, skip });
        if (response.success) {
            return { success: true, rants: response.rants || [] };
        }
        return { success: false, rants: [], error: response.error };
    }

    async getRant(rantId) {
        const response = await this.get(`/devrant/rants/${rantId}`);
        if (response.success) {
            return {
                success: true,
                rant: response.rant,
                comments: response.comments || []
            };
        }
        return { success: false, error: response.error };
    }

    async voteRant(rantId, vote, reason = null) {
        const params = { vote };
        if (reason !== null) {
            params.reason = reason;
        }
        const response = await this.post(`/devrant/rants/${rantId}/vote`, params);
        return { success: response.success, rant: response.rant };
    }

    async postComment(rantId, comment) {
        const response = await this.post(`/devrant/rants/${rantId}/comments`, {
            comment,
            plat: 2
        });
        return { success: response.success, comment: response.comment };
    }

    async updateComment(commentId, comment) {
        const response = await this.post(`/comments/${commentId}`, { comment });
        return { success: response.success };
    }

    async deleteComment(commentId) {
        const response = await this.delete(`/comments/${commentId}`);
        return { success: response.success };
    }

    async voteComment(commentId, vote, reason = null) {
        const params = { vote };
        if (reason !== null) {
            params.reason = reason;
        }
        const response = await this.post(`/comments/${commentId}/vote`, params);
        return { success: response.success, comment: response.comment };
    }

    async getComment(commentId) {
        const response = await this.get(`/comments/${commentId}`);
        if (response.success) {
            return { success: true, comment: response.comment };
        }
        return { success: false, error: response.error };
    }

    async getUserId(username) {
        const response = await this.get('/get-user-id', { username });
        if (response.success) {
            return { success: true, userId: response.user_id };
        }
        return { success: false, error: response.error };
    }

    async getProfile(userId) {
        const response = await this.get(`/users/${userId}`);
        if (response.success) {
            return { success: true, profile: response.profile };
        }
        return { success: false, error: response.error };
    }

    async getProfileByUsername(username) {
        const userIdResponse = await this.getUserId(username);
        if (!userIdResponse.success) {
            return { success: false, error: userIdResponse.error };
        }
        return this.getProfile(userIdResponse.userId);
    }

    async search(term) {
        const response = await this.get('/devrant/search', { term });
        if (response.success) {
            return { success: true, rants: response.results || [] };
        }
        return { success: false, rants: [], error: response.error };
    }

    async getNotifications() {
        const response = await this.get('/users/me/notif-feed', { ext_prof: 1 });
        if (response.success) {
            const items = response.data?.items || [];
            const users = response.data?.username_map || {};

            const notifications = items.map(item => ({
                ...item,
                username: users[item.uid] || item.username || 'Someone'
            }));

            return {
                success: true,
                notifications,
                unread: response.data?.unread || { total: 0 }
            };
        }
        return { success: false, notifications: [], error: response.error };
    }

    async clearNotifications() {
        const response = await this.delete('/users/me/notif-feed');
        return { success: response.success };
    }

    async postRant(text, tags = '', type = 1) {
        const response = await this.post('/devrant/rants', {
            rant: text,
            tags,
            type,
            plat: 2
        });
        return { success: response.success, rantId: response.rant_id };
    }

    async deleteRant(rantId) {
        const response = await this.delete(`/devrant/rants/${rantId}`);
        return { success: response.success };
    }

    async getWeeklyRants(sort = 'recent', limit = 20, skip = 0) {
        const response = await this.get('/devrant/weekly-rants', { sort, limit, skip });
        if (response.success) {
            return { success: true, rants: response.rants || [] };
        }
        return { success: false, rants: [], error: response.error };
    }

    async getCollabs(sort = 'recent', limit = 20, skip = 0) {
        const response = await this.get('/devrant/collabs', { sort, limit, skip });
        if (response.success) {
            return { success: true, rants: response.rants || [] };
        }
        return { success: false, rants: [], error: response.error };
    }

    async getStories(sort = 'recent', limit = 20, skip = 0) {
        const response = await this.get('/devrant/story-rants', { sort, limit, skip });
        if (response.success) {
            return { success: true, rants: response.rants || [] };
        }
        return { success: false, rants: [], error: response.error };
    }
}

export { ApiClient, API_BASE_URL, APP_ID };