import {
  ActionIcon,
  Badge,
  Button,
  Card,
  Container,
  Group,
  Stack,
  Table,
  Text,
  TextInput,
  Title,
  Paper,
  Tabs,
  Avatar,
  SimpleGrid,
  ThemeIcon,
  List,
  Box,
  Divider,
} from '@mantine/core'
import { createFileRoute } from '@tanstack/react-router'
import { 
  TbPlus, 
  TbSearch, 
  TbPencil, 
  TbTrash, 
  TbUserCheck, 
  TbShieldCheck,
  TbAccessPoint,
  TbCircleCheck,
  TbClock,
  TbApps,
} from 'react-icons/tb'
import { DashboardLayout } from '@/frontend/components/DashboardLayout'
import { StatsCard } from '@/frontend/components/StatsCard'

export const Route = createFileRoute('/users')({
  component: UsersPage,
})

const mockUsers = [
  { id: 1, name: 'Amel', email: 'amel@company.com', role: 'SUPER_ADMIN', apps: 'All', status: 'Online', lastActive: 'Now' },
  { id: 2, name: 'John Doe', email: 'john@company.com', role: 'DEVELOPER', apps: 'Desa+, Fitness App', status: 'Offline', lastActive: '2h ago' },
  { id: 3, name: 'Jane Smith', email: 'jane@company.com', role: 'QA', apps: 'E-Commerce', status: 'Online', lastActive: '12m ago' },
  { id: 4, name: 'Rahmat Hidayat', email: 'rahmat@company.com', role: 'DEVELOPER', apps: 'Desa+', status: 'Online', lastActive: 'Now' },
]

const roles = [
  { 
    name: 'SUPER_ADMIN', 
    count: 2, 
    color: 'red',
    permissions: ['Full Access', 'User Mgmt', 'Role Mgmt', 'App Config', 'Logs & Errors']
  },
  { 
    name: 'DEVELOPER', 
    count: 12, 
    color: 'brand-blue',
    permissions: ['View All Apps', 'Manage Assigned App', 'View Logs', 'Resolve Errors', 'Village Setup']
  },
  { 
    name: 'QA', 
    count: 5, 
    color: 'orange',
    permissions: ['View All Apps', 'View Logs', 'Report Errors', 'Test App Features']
  },
]

function UsersPage() {
  return (
    <DashboardLayout>
      <Container size="xl" py="lg">
        <Stack gap="xl">
          <Group justify="space-between" align="center">
            <Stack gap={0}>
              <Title order={2} className="gradient-text">Users</Title>
              <Text size="sm" c="dimmed">Manage system users, security roles, and application access control.</Text>
            </Stack>
          </Group>

          <SimpleGrid cols={{ base: 1, sm: 3 }} spacing="lg">
            <StatsCard title="Total Staff" value={24} icon={TbUserCheck} color="brand-blue" />
            <StatsCard title="Active Now" value={18} icon={TbAccessPoint} color="teal" />
            <StatsCard title="Security Roles" value={3} icon={TbShieldCheck} color="purple-primary" />
          </SimpleGrid>

          <Tabs defaultValue="users" color="brand-blue" variant="pills" radius="md">
            <Tabs.List>
              <Tabs.Tab value="users" leftSection={<TbUserCheck size={16} />}>User Management</Tabs.Tab>
              <Tabs.Tab value="roles" leftSection={<TbShieldCheck size={16} />}>Role Management</Tabs.Tab>
            </Tabs.List>

            <Tabs.Panel value="users" pt="xl">
              <Stack gap="md">
                <Group justify="space-between">
                  <TextInput
                    placeholder="Search users..."
                    leftSection={<TbSearch size={16} />}
                    radius="md"
                    w={350}
                    variant="filled"
                  />
                  <Button
                    variant="gradient"
                    gradient={{ from: '#2563EB', to: '#7C3AED', deg: 135 }}
                    leftSection={<TbPlus size={18} />}
                    radius="md"
                  >
                    Add New User
                  </Button>
                </Group>

                <Paper withBorder radius="2xl" className="glass" p={0} style={{ overflow: 'hidden' }}>
                  <Table className="data-table" verticalSpacing="md" highlightOnHover>
                    <Table.Thead>
                      <Table.Tr>
                        <Table.Th>Name & Contact</Table.Th>
                        <Table.Th>Role</Table.Th>
                        <Table.Th>Status</Table.Th>
                        <Table.Th>App Access</Table.Th>
                        <Table.Th>Actions</Table.Th>
                      </Table.Tr>
                    </Table.Thead>
                    <Table.Tbody>
                      {mockUsers.map((user) => (
                        <Table.Tr key={user.id}>
                          <Table.Td>
                            <Group gap="sm">
                              <Avatar size="sm" radius="xl" color="brand-blue">{user.name.charAt(0)}</Avatar>
                              <Stack gap={0}>
                                <Text fw={600} size="sm">{user.name}</Text>
                                <Text size="xs" c="dimmed">{user.email}</Text>
                              </Stack>
                            </Group>
                          </Table.Td>
                          <Table.Td>
                            <Badge variant="light" color={user.role === 'SUPER_ADMIN' ? 'red' : user.role === 'DEVELOPER' ? 'brand-blue' : 'orange'}>
                              {user.role}
                            </Badge>
                          </Table.Td>
                          <Table.Td>
                            <Group gap={6}>
                              <Box style={{ width: 6, height: 6, borderRadius: '50%', background: user.status === 'Online' ? '#10b981' : '#94a3b8' }} />
                              <Text size="xs" fw={500}>{user.status}</Text>
                              <Text size="xs" c="dimmed" ml="xs"><TbClock size={10} style={{ marginBottom: -2 }} /> {user.lastActive}</Text>
                            </Group>
                          </Table.Td>
                          <Table.Td>
                            <Group gap={4}>
                              <TbApps size={12} color="gray" />
                              <Text size="xs" fw={500}>{user.apps}</Text>
                            </Group>
                          </Table.Td>
                          <Table.Td>
                            <Group gap="xs">
                                <ActionIcon variant="light" size="sm" color="blue">
                                  <TbPencil size={14} />
                                </ActionIcon>
                                <ActionIcon variant="light" size="sm" color="red">
                                  <TbTrash size={14} />
                                </ActionIcon>
                            </Group>
                          </Table.Td>
                        </Table.Tr>
                      ))}
                    </Table.Tbody>
                  </Table>
                </Paper>
              </Stack>
            </Tabs.Panel>

            <Tabs.Panel value="roles" pt="xl">
              <SimpleGrid cols={{ base: 1, md: 3 }} spacing="lg">
                {roles.map((role) => (
                  <Card key={role.name} withBorder radius="2xl" padding="xl" className="glass">
                    <Stack gap="md">
                      <Group justify="space-between">
                        <ThemeIcon size="xl" radius="md" color={role.color} variant="light">
                          <TbShieldCheck size={28} />
                        </ThemeIcon>
                        <Badge variant="default" size="lg" radius="sm">{role.count} Users</Badge>
                      </Group>
                      
                      <Stack gap={4}>
                        <Title order={4}>{role.name.replace('_', ' ')}</Title>
                        <Text size="sm" c="dimmed">Core role for secure app management.</Text>
                      </Stack>

                      <Divider />
                      
                      <Text size="xs" fw={700} c="dimmed" style={{ textTransform: 'uppercase' }}>Key Permissions</Text>
                      <List
                        spacing="xs"
                        size="sm"
                        center
                        icon={
                          <ThemeIcon color="teal" size={16} radius="xl">
                            <TbCircleCheck size={12} />
                          </ThemeIcon>
                        }
                      >
                        {role.permissions.map((p) => (
                          <List.Item key={p}>{p}</List.Item>
                        ))}
                      </List>

                      <Button fullWidth variant="light" color={role.color} mt="md" radius="md">
                        Edit Permissions
                      </Button>
                    </Stack>
                  </Card>
                ))}
              </SimpleGrid>
            </Tabs.Panel>
          </Tabs>
        </Stack>
      </Container>
    </DashboardLayout>
  )
}