"""文章管理路由"""
from flask import render_template, redirect, url_for, request, flash
import json
from app.routes.admin import admin_bp, login_required
from app.services import ArticleService, CategoryService, TagService, AuthorService, ReferenceService, AttachmentService


@admin_bp.route('/articles')
@login_required
def articles():
    """文章列表"""
    page = request.args.get('page', 1, type=int)
    is_published = request.args.get('status')
    
    if is_published == 'published':
        is_published_filter = True
    elif is_published == 'draft':
        is_published_filter = False
    else:
        is_published_filter = None
    
    articles = ArticleService.get_all_list(
        page=page,
        per_page=20,
        is_published=is_published_filter
    )
    
    categories = CategoryService.get_all()
    tags = TagService.get_all()
    
    return render_template('admin/articles.html',
                         articles=articles,
                         categories=categories,
                         tags=tags,
                         current_status=is_published)


@admin_bp.route('/articles/create', methods=['GET', 'POST'])
@login_required
def article_create():
    """创建文章"""
    if request.method == 'POST':
        title = request.form.get('title')
        content = request.form.get('content')
        summary = request.form.get('summary')
        author_id = request.form.get('author_id', type=int)
        category_id = request.form.get('category_id', type=int)
        cover_image = request.form.get('cover_image')
        is_published = request.form.get('is_published') == 'on'
        tag_ids = request.form.getlist('tags')
        tag_ids = [int(t) for t in tag_ids if t]
        
        # 处理参考来源
        references_json = request.form.get('references', '[]')
        references_data = json.loads(references_json) if references_json else []
        
        article = ArticleService.create(
            title=title,
            content=content,
            summary=summary,
            author_id=author_id,
            category_id=category_id,
            tag_ids=tag_ids,
            cover_image=cover_image,
            is_published=is_published
        )
        
        # 添加参考来源
        for ref in references_data:
            if ref.get('title'):
                ReferenceService.add(article.id, ref['title'], ref.get('url'), ref.get('description'))
        
        flash('文章创建成功', 'success')
        return redirect(url_for('admin.article_edit', article_id=article.id))
    
    categories = CategoryService.get_all()
    tags = TagService.get_all()
    authors = AuthorService.get_all()
    return render_template('admin/article_form.html',
                         article=None,
                         categories=categories,
                         tags=tags,
                         authors=authors,
                         references=[],
                         attachments=[])


@admin_bp.route('/articles/<int:article_id>/edit', methods=['GET', 'POST'])
@login_required
def article_edit(article_id):
    """编辑文章"""
    article = ArticleService.get_by_id(article_id)
    if not article:
        flash('文章不存在', 'danger')
        return redirect(url_for('admin.articles'))
    
    if request.method == 'POST':
        title = request.form.get('title')
        content = request.form.get('content')
        summary = request.form.get('summary')
        author_id = request.form.get('author_id', type=int)
        category_id = request.form.get('category_id', type=int)
        cover_image = request.form.get('cover_image')
        is_published = request.form.get('is_published') == 'on'
        tag_ids = request.form.getlist('tags')
        tag_ids = [int(t) for t in tag_ids if t]
        
        # 处理参考来源
        references_json = request.form.get('references', '[]')
        references_data = json.loads(references_json) if references_json else []
        
        ArticleService.update(
            article_id,
            title=title,
            content=content,
            summary=summary,
            author_id=author_id,
            category_id=category_id,
            cover_image=cover_image,
            is_published=is_published,
            tag_ids=tag_ids
        )
        
        # 更新参考来源
        ReferenceService.update_article_references(article_id, references_data)
        
        flash('文章更新成功', 'success')
        return redirect(url_for('admin.article_edit', article_id=article_id))
    
    categories = CategoryService.get_all()
    tags = TagService.get_all()
    authors = AuthorService.get_all()
    references = ReferenceService.get_by_article(article_id)
    attachments = AttachmentService.get_by_article(article_id)
    return render_template('admin/article_form.html',
                         article=article,
                         categories=categories,
                         tags=tags,
                         authors=authors,
                         references=references,
                         attachments=attachments)


@admin_bp.route('/articles/<int:article_id>/delete', methods=['POST'])
@login_required
def article_delete(article_id):
    """删除文章"""
    if ArticleService.delete(article_id):
        flash('文章已删除', 'success')
    else:
        flash('删除失败', 'danger')
    return redirect(url_for('admin.articles'))


@admin_bp.route('/articles/<int:article_id>/toggle-publish', methods=['POST'])
@login_required
def article_toggle_publish(article_id):
    """切换文章发布状态"""
    article = ArticleService.get_by_id(article_id)
    if article:
        ArticleService.update(article_id, is_published=not article.is_published)
        status = '发布' if not article.is_published else '取消发布'
        flash(f'文章已{status}', 'success')
    else:
        flash('文章不存在', 'danger')
    return redirect(url_for('admin.articles'))