"""contacts 命令 — 搜索或查看联系人"""

import click

from ..core.contacts import get_contact_full, get_contact_names, resolve_username, get_contact_detail
from ..output.formatter import output


@click.command("contacts")
@click.option("--query", default="", help="搜索关键词（匹配昵称、备注、wxid）")
@click.option("--detail", default=None, help="查看联系人详情（传入昵称/备注/wxid）")
@click.option("--limit", default=50, help="返回数量")
@click.option("--format", "fmt", default="json", type=click.Choice(["json", "text"]), help="输出格式")
@click.pass_context
def contacts(ctx, query, detail, limit, fmt):
    """搜索或列出联系人

    \b
    示例:
      wechat-cli contacts --query "李"              # 搜索联系人
      wechat-cli contacts --detail "张三"          # 查看联系人详情
      wechat-cli contacts --detail "wxid_xxx"       # 通过 wxid 查看
    """
    app = ctx.obj

    if detail:
        _show_detail(app, detail, fmt)
        return

    names = get_contact_names(app.cache, app.decrypted_dir)
    full = get_contact_full(app.cache, app.decrypted_dir)

    if query:
        q_lower = query.lower()
        matched = [c for c in full if q_lower in c.get('nick_name', '').lower()
                   or q_lower in c.get('remark', '').lower()
                   or q_lower in c.get('username', '').lower()]
    else:
        matched = full

    matched = matched[:limit]

    if fmt == 'json':
        output(matched, 'json')
    else:
        header = f"找到 {len(matched)} 个联系人:"
        lines = []
        for c in matched:
            display = c['remark'] or c['nick_name'] or c['username']
            line = f"{display}  ({c['username']})"
            if c['remark']:
                line += f"  备注: {c['remark']}"
            lines.append(line)
        output(header + "\n\n" + "\n".join(lines), 'text')


def _show_detail(app, name_or_id, fmt):
    """显示联系人详情。"""
    names = get_contact_names(app.cache, app.decrypted_dir)

    # 尝试解析为 username
    username = resolve_username(name_or_id, app.cache, app.decrypted_dir)
    if not username:
        # 直接用原始输入试试
        username = name_or_id

    info = get_contact_detail(username, app.cache, app.decrypted_dir)
    if not info:
        click.echo(f"找不到联系人: {name_or_id}", err=True)
        return

    if fmt == 'json':
        output(info, 'json')
    else:
        lines = [f"联系人详情: {info['nick_name']}"]
        if info['remark']:
            lines.append(f"备注: {info['remark']}")
        if info['alias']:
            lines.append(f"微信号: {info['alias']}")
        lines.append(f"wxid: {info['username']}")
        if info['description']:
            lines.append(f"个性签名: {info['description']}")
        if info['is_group']:
            lines.append("类型: 群聊")
        elif info['is_subscription']:
            lines.append("类型: 公众号")
        elif info['verify_flag'] and info['verify_flag'] >= 8:
            lines.append("类型: 企业认证")
        if info['avatar']:
            lines.append(f"头像: {info['avatar']}")
        output("\n".join(lines), 'text')