import 'package:flutter/material.dart';

import '../api/oa_client.dart';
import '../session/session.dart';
import '../theme.dart';
import 'wecom.dart';

const kDeskBg = Color(0xFFEDEDED);
const kDeskSide = Color(0xFFF7F7F7);
const kDeskPane = Colors.white;
const kDeskActive = Color(0xFFE8F3FF);

class DesktopSidebar extends StatelessWidget {
  const DesktopSidebar({
    super.key,
    required this.session,
    required this.api,
    required this.index,
    required this.onChanged,
    required this.items,
  });

  final SessionStore session;
  final OaClient api;
  final int index;
  final ValueChanged<int> onChanged;
  final List<(IconData, IconData, String, int)> items;

  @override
  Widget build(BuildContext context) {
    return ColoredBox(
      color: kDeskSide,
      child: SafeArea(
        child: SizedBox(
          width: 210,
          child: Column(
            crossAxisAlignment: CrossAxisAlignment.stretch,
            children: [
              Padding(
                padding: const EdgeInsets.fromLTRB(16, 14, 16, 10),
                child: Row(
                  children: [
                    SquareAvatar(
                      label: session.displayName,
                      size: 36,
                      fileId: '${session.user['avatarFileId'] ?? ''}',
                      api: api,
                    ),
                    const SizedBox(width: 10),
                    Expanded(
                      child: Text(
                        session.displayName,
                        maxLines: 1,
                        overflow: TextOverflow.ellipsis,
                        style: const TextStyle(fontSize: 14, fontWeight: FontWeight.w600, color: kInk),
                      ),
                    ),
                  ],
                ),
              ),
              const Divider(height: 1, color: kLine),
              const SizedBox(height: 6),
              Expanded(
                child: ListView(
                  padding: const EdgeInsets.symmetric(horizontal: 10),
                  children: [
                    for (var i = 0; i < items.length; i++)
                      _NavItem(
                        active: index == i,
                        icon: index == i ? items[i].$2 : items[i].$1,
                        label: items[i].$3,
                        badge: items[i].$4,
                        onTap: () => onChanged(i),
                      ),
                  ],
                ),
              ),
            ],
          ),
        ),
      ),
    );
  }
}

class _NavItem extends StatelessWidget {
  const _NavItem({
    required this.active,
    required this.icon,
    required this.label,
    required this.badge,
    required this.onTap,
  });

  final bool active;
  final IconData icon;
  final String label;
  final int badge;
  final VoidCallback onTap;

  @override
  Widget build(BuildContext context) {
    return Padding(
      padding: const EdgeInsets.only(bottom: 4),
      child: Material(
        color: active ? kDeskActive : Colors.transparent,
        borderRadius: BorderRadius.circular(8),
        child: InkWell(
          onTap: onTap,
          borderRadius: BorderRadius.circular(8),
          child: Padding(
            padding: const EdgeInsets.symmetric(horizontal: 12, vertical: 10),
            child: Row(
              children: [
                Stack(
                  clipBehavior: Clip.none,
                  children: [
                    Icon(icon, size: 20, color: active ? kBind : const Color(0xFF646464)),
                    if (badge > 0)
                      Positioned(right: -8, top: -4, child: UnreadBadge(badge)),
                  ],
                ),
                const SizedBox(width: 10),
                Expanded(
                  child: Text(
                    label,
                    style: TextStyle(
                      fontSize: 14,
                      color: active ? kBind : const Color(0xFF323232),
                      fontWeight: active ? FontWeight.w600 : FontWeight.w400,
                    ),
                  ),
                ),
              ],
            ),
          ),
        ),
      ),
    );
  }
}

class DesktopPaneHeader extends StatelessWidget {
  const DesktopPaneHeader({
    super.key,
    required this.title,
    this.actions = const [],
    this.leading,
    this.bottom,
  });

  final String title;
  final List<Widget> actions;
  final Widget? leading;
  final Widget? bottom;

  @override
  Widget build(BuildContext context) {
    return ColoredBox(
      color: kDeskPane,
      child: Column(
        crossAxisAlignment: CrossAxisAlignment.stretch,
        children: [
          SizedBox(
            height: 52,
            child: Row(
              children: [
                if (leading != null) leading!,
                Padding(
                  padding: EdgeInsets.only(left: leading == null ? 16 : 4),
                  child: Text(title, style: const TextStyle(fontSize: 16, fontWeight: FontWeight.w600, color: kInk)),
                ),
                const Spacer(),
                ...actions,
                const SizedBox(width: 8),
              ],
            ),
          ),
          if (bottom != null) bottom!,
          const Divider(height: 1, color: kLine),
        ],
      ),
    );
  }
}

class DesktopSearchBar extends StatelessWidget {
  const DesktopSearchBar({super.key, required this.hint, this.onChanged, this.controller});
  final String hint;
  final ValueChanged<String>? onChanged;
  final TextEditingController? controller;

  @override
  Widget build(BuildContext context) {
    return Container(
      height: 34,
      decoration: BoxDecoration(color: const Color(0xFFF3F3F3), borderRadius: BorderRadius.circular(6)),
      padding: const EdgeInsets.symmetric(horizontal: 10),
      child: Row(
        children: [
          const Icon(Icons.search, size: 18, color: kMute),
          const SizedBox(width: 6),
          Expanded(
            child: TextField(
              controller: controller,
              onChanged: onChanged,
              style: const TextStyle(fontSize: 14),
              decoration: InputDecoration(
                hintText: hint,
                isDense: true,
                border: InputBorder.none,
                enabledBorder: InputBorder.none,
                focusedBorder: InputBorder.none,
                contentPadding: EdgeInsets.zero,
                hintStyle: const TextStyle(color: Color(0xFFB2B2B2), fontSize: 14),
              ),
            ),
          ),
        ],
      ),
    );
  }
}

class DesktopAppCard extends StatelessWidget {
  const DesktopAppCard({
    super.key,
    required this.label,
    required this.desc,
    required this.icon,
    required this.color,
    required this.onTap,
  });

  final String label;
  final String desc;
  final IconData icon;
  final Color color;
  final VoidCallback onTap;

  @override
  Widget build(BuildContext context) {
    return Material(
      color: Colors.white,
      borderRadius: BorderRadius.circular(10),
      child: InkWell(
        onTap: onTap,
        borderRadius: BorderRadius.circular(10),
        child: Padding(
          padding: const EdgeInsets.fromLTRB(14, 14, 14, 12),
          child: Row(
            crossAxisAlignment: CrossAxisAlignment.start,
            children: [
              Container(
                width: 40,
                height: 40,
                decoration: BoxDecoration(color: color, borderRadius: BorderRadius.circular(10)),
                child: Icon(icon, color: Colors.white, size: 22),
              ),
              const SizedBox(width: 12),
              Expanded(
                child: Column(
                  crossAxisAlignment: CrossAxisAlignment.start,
                  children: [
                    Text(label, maxLines: 1, overflow: TextOverflow.ellipsis, style: const TextStyle(fontSize: 15, fontWeight: FontWeight.w600, color: kInk)),
                    const SizedBox(height: 4),
                    Text(desc, maxLines: 2, overflow: TextOverflow.ellipsis, style: const TextStyle(fontSize: 12, color: kMute, height: 1.35)),
                  ],
                ),
              ),
            ],
          ),
        ),
      ),
    );
  }
}

class DesktopEmptyPane extends StatelessWidget {
  const DesktopEmptyPane({super.key, this.hint = '选择左侧会话开始聊天'});

  final String hint;

  @override
  Widget build(BuildContext context) {
    return ColoredBox(
      color: const Color(0xFFF5F5F5),
      child: Center(
        child: Column(
          mainAxisSize: MainAxisSize.min,
          children: [
            Opacity(
              opacity: 0.12,
              child: Container(
                width: 120,
                height: 120,
                decoration: BoxDecoration(color: kBind, borderRadius: BorderRadius.circular(28)),
                child: const Icon(Icons.apartment, size: 64, color: Colors.white),
              ),
            ),
            const SizedBox(height: 20),
            Text(hint, style: const TextStyle(color: kMute, fontSize: 14)),
          ],
        ),
      ),
    );
  }
}

class DesktopTabBar extends StatelessWidget {
  const DesktopTabBar({
    super.key,
    required this.tabs,
    required this.active,
    required this.onSelect,
    required this.onClose,
  });

  final List<(String key, String title, IconData icon, Color color)> tabs;
  final int active;
  final ValueChanged<int> onSelect;
  final ValueChanged<int> onClose;

  @override
  Widget build(BuildContext context) {
    return ColoredBox(
      color: kDeskPane,
      child: Column(
        children: [
          SizedBox(
            height: 44,
            child: ListView(
              scrollDirection: Axis.horizontal,
              padding: const EdgeInsets.symmetric(horizontal: 8),
              children: [
                for (var i = 0; i < tabs.length; i++)
                  _TabChip(
                    title: tabs[i].$2,
                    icon: tabs[i].$3,
                    color: tabs[i].$4,
                    active: active == i,
                    closable: i > 0,
                    onTap: () => onSelect(i),
                    onClose: () => onClose(i),
                  ),
              ],
            ),
          ),
          const Divider(height: 1, color: kLine),
        ],
      ),
    );
  }
}

class _TabChip extends StatelessWidget {
  const _TabChip({
    required this.title,
    required this.icon,
    required this.color,
    required this.active,
    required this.closable,
    required this.onTap,
    required this.onClose,
  });

  final String title;
  final IconData icon;
  final Color color;
  final bool active;
  final bool closable;
  final VoidCallback onTap;
  final VoidCallback onClose;

  @override
  Widget build(BuildContext context) {
    return Padding(
      padding: const EdgeInsets.only(right: 4, top: 6, bottom: 6),
      child: Material(
        color: active ? const Color(0xFFF3F6FB) : Colors.transparent,
        borderRadius: BorderRadius.circular(8),
        child: InkWell(
          onTap: onTap,
          borderRadius: BorderRadius.circular(8),
          child: Padding(
            padding: EdgeInsets.fromLTRB(10, 6, closable ? 4 : 10, 6),
            child: Row(
              mainAxisSize: MainAxisSize.min,
              children: [
                Icon(icon, size: 16, color: color),
                const SizedBox(width: 6),
                Text(title, style: TextStyle(fontSize: 13, color: active ? kInk : kMute, fontWeight: active ? FontWeight.w600 : FontWeight.w400)),
                if (closable) ...[
                  const SizedBox(width: 4),
                  InkWell(
                    onTap: onClose,
                    borderRadius: BorderRadius.circular(10),
                    child: const Padding(
                      padding: EdgeInsets.all(2),
                      child: Icon(Icons.close, size: 14, color: kMute),
                    ),
                  ),
                ],
              ],
            ),
          ),
        ),
      ),
    );
  }
}