/**
 * @fileoverview User Profile Component for Rantii
 * @author retoor <retoor@molodetz.nl>
 * @description Complete user profile display with stats and content
 * @keywords user, profile, stats, about, content
 */

import { BaseComponent } from './base-component.js';
import { formatDate } from '../utils/date.js';

class UserProfile extends BaseComponent {
    static get observedAttributes() {
        return ['username', 'user-id'];
    }

    init() {
        this.profileData = null;
        this.isLoading = false;
        this.activeTab = 'rants';
        this.render();
        this.bindEvents();
    }

    async load(username) {
        if (!username) return;

        this.isLoading = true;
        this.setAttr('username', username);
        this.render();

        try {
            const result = await this.getApi()?.getProfileByUsername(username);
            if (result?.success) {
                this.profileData = result.profile;
            }
        } catch (error) {
            this.profileData = null;
        } finally {
            this.isLoading = false;
            this.render();
        }
    }

    render() {
        if (this.isLoading) {
            this.setHtml(`
                <div class="profile-loading">
                    <loading-spinner text="Loading profile..."></loading-spinner>
                </div>
            `);
            return;
        }

        if (!this.profileData) {
            this.setHtml(`
                <div class="profile-error">
                    <p>User not found</p>
                    <button class="btn btn-primary back-btn">Go Back</button>
                </div>
            `);
            return;
        }

        const profile = this.profileData;
        const rants = profile.content?.content?.rants || [];
        const comments = profile.content?.content?.comments || [];

        this.addClass('user-profile');

        this.setHtml(`
            <header class="profile-header">
                <button class="back-btn" aria-label="Go back">
                    <svg viewBox="0 0 24 24" width="24" height="24">
                        <path fill="currentColor" d="M20 11H7.83l5.59-5.59L12 4l-8 8 8 8 1.41-1.41L7.83 13H20v-2z"/>
                    </svg>
                </button>
                <div class="profile-avatar">
                    <user-avatar
                        avatar='${JSON.stringify(profile.avatar)}'
                        username="${profile.username}"
                        size="large">
                    </user-avatar>
                </div>
                <div class="profile-info">
                    <h1 class="profile-username">${profile.username}</h1>
                    <div class="profile-score">+${profile.score}</div>
                </div>
            </header>
            <section class="profile-details">
                ${profile.about ? `
                    <div class="detail-item">
                        <span class="detail-label">About</span>
                        <p class="detail-value">${profile.about}</p>
                    </div>
                ` : ''}
                ${profile.location ? `
                    <div class="detail-item">
                        <span class="detail-label">Location</span>
                        <span class="detail-value">${profile.location}</span>
                    </div>
                ` : ''}
                ${profile.skills ? `
                    <div class="detail-item">
                        <span class="detail-label">Skills</span>
                        <span class="detail-value">${profile.skills}</span>
                    </div>
                ` : ''}
                ${profile.github ? `
                    <div class="detail-item">
                        <span class="detail-label">GitHub</span>
                        <a class="detail-value detail-link" href="https://github.com/${profile.github}" target="_blank" rel="noopener">${profile.github}</a>
                    </div>
                ` : ''}
                ${profile.website ? `
                    <div class="detail-item">
                        <span class="detail-label">Website</span>
                        <a class="detail-value detail-link" href="${profile.website}" target="_blank" rel="noopener">${profile.website}</a>
                    </div>
                ` : ''}
                <div class="detail-item">
                    <span class="detail-label">Joined</span>
                    <span class="detail-value">${formatDate(profile.created_time)}</span>
                </div>
            </section>
            <section class="profile-content">
                <div class="content-tabs">
                    <button class="tab ${this.activeTab === 'rants' ? 'active' : ''}" data-tab="rants">
                        Rants (${rants.length})
                    </button>
                    <button class="tab ${this.activeTab === 'comments' ? 'active' : ''}" data-tab="comments">
                        Comments (${comments.length})
                    </button>
                </div>
                <div class="content-panel">
                    ${this.activeTab === 'rants' ? `
                        <div class="rants-list">
                            ${rants.length > 0 ? rants.map(rant => `
                                <rant-card rant-id="${rant.id}"></rant-card>
                            `).join('') : '<p class="empty-message">No rants yet</p>'}
                        </div>
                    ` : ''}
                    ${this.activeTab === 'comments' ? `
                        <div class="comments-list">
                            ${comments.length > 0 ? comments.map(comment => `
                                <div class="profile-comment" data-rant-id="${comment.rant_id}">
                                    <rant-content text="${this.escapeAttr(comment.body)}"></rant-content>
                                    <div class="comment-meta">
                                        <span class="comment-score">+${comment.score}</span>
                                    </div>
                                </div>
                            `).join('') : '<p class="empty-message">No comments yet</p>'}
                        </div>
                    ` : ''}
                </div>
            </section>
        `);

        this.initRantCards(rants);
    }

    escapeAttr(str) {
        if (!str) return '';
        return str
            .replace(/&/g, '&amp;')
            .replace(/"/g, '&quot;')
            .replace(/'/g, '&#39;')
            .replace(/</g, '&lt;')
            .replace(/>/g, '&gt;');
    }

    initRantCards(rants) {
        const cards = this.$$('rant-card');
        cards.forEach((card, index) => {
            if (rants[index]) {
                card.setRant(rants[index]);
            }
        });
    }

    bindEvents() {
        this.on(this, 'click', this.handleClick);
    }

    handleClick(e) {
        const backBtn = e.target.closest('.back-btn');
        const tab = e.target.closest('.tab');
        const profileComment = e.target.closest('.profile-comment');

        if (backBtn) {
            e.preventDefault();
            window.history.back();
            return;
        }

        if (tab) {
            this.activeTab = tab.dataset.tab;
            this.render();
            const rants = this.profileData?.content?.content?.rants || [];
            this.initRantCards(rants);
            return;
        }

        if (profileComment) {
            const rantId = profileComment.dataset.rantId;
            if (rantId) {
                this.getRouter()?.goToRant(rantId);
            }
        }
    }

    onAttributeChanged(name, oldValue, newValue) {
        if (name === 'username' && newValue && oldValue !== newValue) {
            this.load(newValue);
        }
    }

    getUsername() {
        return this.profileData?.username || this.getAttr('username');
    }
}

customElements.define('user-profile', UserProfile);

export { UserProfile };