import { useState } from 'react'
import { Table, Tag, Tabs, Typography, Card, Row, Col, Select, Space, Spin } from 'antd'
import { CodeOutlined, RocketOutlined } from '@ant-design/icons'
import { useQuery } from '@tanstack/react-query'
import { api } from '@/services/http-client'

const { Title, Text } = Typography

export default function ProjectCenter() {
  const [selectedRepo, setSelectedRepo] = useState<string | null>(null)
  const [tab, setTab] = useState('repos')

  const { data: repos, isLoading } = useQuery({
    queryKey: ['gitea', 'repos'],
    queryFn: () => api.get<any[]>('/admin-api/projects/repos').then(d => d ?? []),
  })

  const repoParts = selectedRepo?.split('/') || []

  const { data: issues } = useQuery({
    queryKey: ['gitea', 'issues', selectedRepo],
    queryFn: () => api.get<any[]>(`/admin-api/projects/repos/${repoParts[0]}/${repoParts[1]}/issues?state=all`).then(d => d ?? []),
    enabled: tab === 'issues' && repoParts.length === 2,
  })

  const { data: milestones } = useQuery({
    queryKey: ['gitea', 'milestones', selectedRepo],
    queryFn: () => api.get<any[]>(`/admin-api/projects/repos/${repoParts[0]}/${repoParts[1]}/milestones`).then(d => d ?? []),
    enabled: tab === 'milestones' && repoParts.length === 2,
  })

  const { data: releases } = useQuery({
    queryKey: ['gitea', 'releases', selectedRepo],
    queryFn: () => api.get<any[]>(`/admin-api/projects/repos/${repoParts[0]}/${repoParts[1]}/releases`).then(d => d ?? []),
    enabled: tab === 'releases' && repoParts.length === 2,
  })

  const { data: runners } = useQuery({
    queryKey: ['gitea', 'runners'],
    queryFn: () => api.get<any[]>('/admin-api/projects/runners').then(d => d ?? []),
    enabled: tab === 'runners',
  })

  const repoOptions = (repos || []).map((r: any) => ({ label: r.fullName, value: r.fullName }))

  const RepoSelector = () => (
    <Select
      placeholder="选择仓库"
      value={selectedRepo}
      onChange={setSelectedRepo}
      options={repoOptions}
      style={{ width: 280 }}
      showSearch
      filterOption={(input, option) => (option?.label as string)?.toLowerCase().includes(input.toLowerCase())}
      allowClear
    />
  )

  const repoColumns = [
    { title: '仓库', dataIndex: 'fullName', width: 200, render: (n: string) => <a onClick={() => { setSelectedRepo(n); setTab('issues') }}>{n}</a> },
    { title: '描述', dataIndex: 'description', width: 200, ellipsis: true, render: (d: string) => d || '-' },
    { title: 'Issues', dataIndex: 'openIssues', width: 70 },
    { title: 'Stars', dataIndex: 'stars', width: 60 },
    { title: '分支', dataIndex: 'defaultBranch', width: 80, render: (b: string) => <Tag>{b}</Tag> },
    { title: '更新', dataIndex: 'updatedAt', width: 100, render: (d: string) => d ? new Date(d).toLocaleDateString() : '-' },
  ]

  const issueColumns = [
    { title: '#', dataIndex: 'number', width: 60 },
    { title: '标题', dataIndex: 'title', width: 300, ellipsis: true },
    { title: '状态', dataIndex: 'state', width: 70, render: (s: string) => <Tag color={s === 'open' ? 'green' : 'default'}>{s}</Tag> },
    { title: '创建者', dataIndex: ['user', 'login'], width: 100 },
    { title: '更新', dataIndex: 'updated_at', width: 100, render: (d: string) => d ? new Date(d).toLocaleDateString() : '-' },
  ]

  return (
    <div>
      <Row justify="space-between" align="middle" style={{ marginBottom: 16 }}>
        <Col><Title level={4} style={{ margin: 0 }}><CodeOutlined /> 项目中心</Title></Col>
        {selectedRepo && <Col><Text strong>{selectedRepo}</Text></Col>}
      </Row>

      <Tabs activeKey={tab} onChange={setTab} items={[
        {
          key: 'repos', label: '仓库列表',
          children: <Table dataSource={repos || []} columns={repoColumns} rowKey="id" loading={isLoading} size="small" pagination={false} scroll={{ x: 700 }} />,
        },
        {
          key: 'issues', label: 'Issues',
          children: (
            <div>
              <Space style={{ marginBottom: 12 }}><RepoSelector /></Space>
              {selectedRepo ? (
                <Table dataSource={issues || []} columns={issueColumns} rowKey="id" size="small" pagination={{ pageSize: 30 }} scroll={{ x: 700 }} />
              ) : <Text type="secondary">请选择仓库</Text>}
            </div>
          ),
        },
        {
          key: 'milestones', label: '里程碑',
          children: (
            <div>
              <Space style={{ marginBottom: 12 }}><RepoSelector /></Space>
              {selectedRepo ? (
                <Row gutter={[16, 16]}>
                  {(milestones || []).map((m: any) => (
                    <Col xs={24} sm={12} lg={8} key={m.id}>
                      <Card size="small" title={m.title}>
                        <Text type="secondary">{m.description || '无描述'}</Text>
                        <br />
                        <Tag color={m.state === 'open' ? 'blue' : 'default'}>{m.state}</Tag>
                        {m.due_on && <Tag>截止 {new Date(m.due_on).toLocaleDateString()}</Tag>}
                      </Card>
                    </Col>
                  ))}
                </Row>
              ) : <Text type="secondary">请选择仓库</Text>}
            </div>
          ),
        },
        {
          key: 'releases', label: 'Release',
          children: (
            <div>
              <Space style={{ marginBottom: 12 }}><RepoSelector /></Space>
              {selectedRepo ? (
                <Table
                  dataSource={releases || []} rowKey="id" size="small" pagination={false}
                  columns={[
                    { title: '标签', dataIndex: 'tag_name', width: 120, render: (t: string) => <Tag color="blue"><RocketOutlined /> {t}</Tag> },
                    { title: '标题', dataIndex: 'name', width: 250, ellipsis: true },
                    { title: '发布者', dataIndex: ['author', 'login'], width: 100 },
                    { title: '发布时间', dataIndex: 'published_at', width: 120, render: (d: string) => d ? new Date(d).toLocaleDateString() : '-' },
                  ]}
                />
              ) : <Text type="secondary">请选择仓库</Text>}
            </div>
          ),
        },
        {
          key: 'runners', label: 'Runner 状态',
          children: runners ? (
            <Table
              dataSource={runners} rowKey="id" size="small" pagination={false}
              columns={[
                { title: '名称', dataIndex: 'name', width: 150 },
                { title: '状态', dataIndex: 'is_online', width: 80, render: (o: boolean) => <Tag color={o ? 'green' : 'red'}>{o ? '在线' : '离线'}</Tag> },
                { title: '标签', dataIndex: 'tags', width: 150, render: (t: string[]) => (t || []).join(', ') || '-' },
                { title: '最后活跃', dataIndex: 'last_active', width: 120, render: (d: string) => d ? new Date(d).toLocaleString() : '-' },
              ]}
            />
          ) : <Spin />,
        },
        {
          key: 'gitea', label: 'Gitea 面板',
          children: (
            <div style={{ width: '100%', height: 'calc(100vh - 200px)' }}>
              <iframe src="https://git.admin.longde.cloud" style={{ width: '100%', height: '100%', border: 'none' }} title="Gitea" />
            </div>
          ),
        },
      ]} />
    </div>
  )
}