import { DashboardLayout } from '@/frontend/components/DashboardLayout'
import { API_URLS } from '@/frontend/config/api'
import {
  Accordion,
  Avatar,
  Badge,
  Box,
  Button,
  Code,
  Collapse,
  Container,
  Group,
  Image,
  Loader,
  Modal,
  Pagination,
  Paper,
  Select,
  SimpleGrid,
  Stack,
  Text,
  ThemeIcon,
  TextInput,
  Textarea,
  Title,
  Timeline,
} from '@mantine/core'
import { useQuery } from '@tanstack/react-query'
import { createFileRoute } from '@tanstack/react-router'
import { useState } from 'react'
import { useDisclosure } from '@mantine/hooks'
import { notifications } from '@mantine/notifications'
import {
  TbAlertTriangle,
  TbBug,
  TbDeviceDesktop,
  TbDeviceMobile,
  TbFilter,
  TbSearch,
  TbHistory,
  TbPhoto,
  TbPlus,
  TbCircleCheck,
  TbCircleX,
} from 'react-icons/tb'

export const Route = createFileRoute('/bug-reports')({
  component: ListErrorsPage,
})

function ListErrorsPage() {
  const [page, setPage] = useState(1)
  const [search, setSearch] = useState('')
  const [app, setApp] = useState('all')
  const [status, setStatus] = useState('all')

  const [showLogs, setShowLogs] = useState<Record<string, boolean>>({})

  const toggleLogs = (bugId: string) => {
    setShowLogs((prev) => ({ ...prev, [bugId]: !prev[bugId] }))
  }

  const { data, isLoading, refetch } = useQuery({
    queryKey: ['bugs', { page, search, app, status }],
    queryFn: () =>
      fetch(API_URLS.getBugs(page, search, app, status)).then((r) => r.json()),
  })

  // Create Bug Modal Logic
  const [opened, { open, close }] = useDisclosure(false)
  const [isSubmitting, setIsSubmitting] = useState(false)
  const [createForm, setCreateForm] = useState({
    description: '',
    app: 'desa-plus',
    status: 'OPEN',
    source: 'USER',
    affectedVersion: '',
    device: '',
    os: '',
    stackTrace: '',
    imageUrl: '',
  })

  // Update Status Modal Logic
  const [updateModalOpened, { open: openUpdateModal, close: closeUpdateModal }] = useDisclosure(false)
  const [isUpdating, setIsUpdating] = useState(false)
  const [selectedBugId, setSelectedBugId] = useState<string | null>(null)
  const [updateForm, setUpdateForm] = useState({
    status: '',
    description: '',
  })

  // Feedback Modal Logic
  const [feedbackModalOpened, { open: openFeedbackModal, close: closeFeedbackModal }] = useDisclosure(false)
  const [isUpdatingFeedback, setIsUpdatingFeedback] = useState(false)
  const [feedbackForm, setFeedbackForm] = useState({
    feedBack: '',
  })

  const handleUpdateFeedback = async () => {
    if (!selectedBugId || !feedbackForm.feedBack) return

    setIsUpdatingFeedback(true)
    try {
      const res = await fetch(API_URLS.updateBugFeedback(selectedBugId), {
        method: 'PATCH',
        headers: { 'Content-Type': 'application/json' },
        body: JSON.stringify(feedbackForm),
      })

      if (res.ok) {
        notifications.show({
          title: 'Success',
          message: 'Feedback has been updated.',
          color: 'teal',
          icon: <TbCircleCheck size={18} />,
        })
        refetch()
        closeFeedbackModal()
        setFeedbackForm({ feedBack: '' })
      } else {
        throw new Error('Failed to update feedback')
      }
    } catch (e) {
      notifications.show({
        title: 'Error',
        message: 'Something went wrong.',
        color: 'red',
        icon: <TbCircleX size={18} />,
      })
    } finally {
      setIsUpdatingFeedback(false)
    }
  }

  const handleUpdateStatus = async () => {
    if (!selectedBugId || !updateForm.status) return

    setIsUpdating(true)
    try {
      const res = await fetch(API_URLS.updateBugStatus(selectedBugId), {
        method: 'PATCH',
        headers: { 'Content-Type': 'application/json' },
        body: JSON.stringify(updateForm),
      })

      if (res.ok) {
        notifications.show({
          title: 'Success',
          message: 'Status has been updated.',
          color: 'teal',
          icon: <TbCircleCheck size={18} />,
        })
        refetch()
        closeUpdateModal()
        setUpdateForm({ status: '', description: '' })
      } else {
        throw new Error('Failed to update status')
      }
    } catch (e) {
      notifications.show({
        title: 'Error',
        message: 'Something went wrong.',
        color: 'red',
        icon: <TbCircleX size={18} />,
      })
    } finally {
      setIsUpdating(false)
    }
  }

  const handleCreateBug = async () => {
    if (!createForm.description || !createForm.affectedVersion || !createForm.device || !createForm.os) {
      notifications.show({
        title: 'Validation Error',
        message: 'Please fill in all required fields.',
        color: 'red',
      })
      return
    }

    setIsSubmitting(true)
    try {
      const res = await fetch(API_URLS.createBug(), {
        method: 'POST',
        headers: { 'Content-Type': 'application/json' },
        body: JSON.stringify(createForm),
      })

      if (res.ok) {
        await fetch(API_URLS.createLog(), {
          method: 'POST',
          headers: { 'Content-Type': 'application/json' },
          body: JSON.stringify({ type: 'CREATE', message: `Report error baru ditambahkan: ${createForm.description.substring(0, 50)}${createForm.description.length > 50 ? '...' : ''}` })
        }).catch(console.error)

        notifications.show({
          title: 'Success',
          message: 'Error report has been created.',
          color: 'teal',
          icon: <TbCircleCheck size={18} />,
        })
        refetch()
        close()
        setCreateForm({
          description: '',
          app: 'desa-plus',
          status: 'OPEN',
          source: 'USER',
          affectedVersion: '',
          device: '',
          os: '',
          stackTrace: '',
          imageUrl: '',
        })
      } else {
        throw new Error('Failed to create error report')
      }
    } catch (e) {
      notifications.show({
        title: 'Error',
        message: 'Something went wrong.',
        color: 'red',
        icon: <TbCircleX size={18} />,
      })
    } finally {
      setIsSubmitting(false)
    }
  }

  const bugs = data?.data || []
  const totalPages = data?.totalPages || 1

  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">
                Error Reports
              </Title>
              <Text size="sm" c="dimmed">
                Centralized error tracking and analysis for all applications.
              </Text>
            </Stack>
            <Group>
              <Button
                variant="gradient"
                gradient={{ from: '#2563EB', to: '#7C3AED', deg: 135 }}
                leftSection={<TbPlus size={18} />}
                onClick={open}
              >
                Report Error
              </Button>
              {/* <Button variant="light" color="red" leftSection={<TbBug size={16} />}>
                Generate Report
              </Button> */}
            </Group>
          </Group>

          <Modal
            opened={updateModalOpened}
            onClose={closeUpdateModal}
            title={<Text fw={700} size="lg">Update Bug Status</Text>}
            radius="xl"
            overlayProps={{ backgroundOpacity: 0.55, blur: 3 }}
          >
            <Stack gap="md">
              <Select
                label="New Status"
                placeholder="Select status"
                required
                data={[
                  { value: 'OPEN', label: 'Open' },
                  { value: 'ON_HOLD', label: 'On Hold' },
                  { value: 'IN_PROGRESS', label: 'In Progress' },
                  { value: 'RESOLVED', label: 'Resolved' },
                  { value: 'RELEASED', label: 'Released' },
                  { value: 'CLOSED', label: 'Closed' },
                ]}
                value={updateForm.status}
                onChange={(val) => setUpdateForm({ ...updateForm, status: val || '' })}
              />
              <Textarea
                label="Update Note (Optional)"
                placeholder="E.g. Fixed in commit xxxxx / Assigned to team"
                minRows={3}
                value={updateForm.description}
                onChange={(e) => setUpdateForm({ ...updateForm, description: e.target.value })}
              />
              <Button
                fullWidth
                mt="md"
                variant="gradient"
                gradient={{ from: '#2563EB', to: '#7C3AED', deg: 135 }}
                loading={isUpdating}
                onClick={handleUpdateStatus}
              >
                Save Changes
              </Button>
            </Stack>
          </Modal>

          <Modal
            opened={feedbackModalOpened}
            onClose={closeFeedbackModal}
            title={<Text fw={700} size="lg">Developer Feedback</Text>}
            radius="xl"
            overlayProps={{ backgroundOpacity: 0.55, blur: 3 }}
          >
            <Stack gap="md">
              <Textarea
                data-autofocus
                label="Feedback / Note"
                placeholder="Explain the issue, root cause, or resolution..."
                required
                minRows={4}
                value={feedbackForm.feedBack}
                onChange={(e) => setFeedbackForm({ ...feedbackForm, feedBack: e.target.value })}
              />
              <Button
                fullWidth
                mt="md"
                variant="gradient"
                gradient={{ from: '#2563EB', to: '#7C3AED', deg: 135 }}
                loading={isUpdatingFeedback}
                onClick={handleUpdateFeedback}
              >
                Save Feedback
              </Button>
            </Stack>
          </Modal>

          <Modal
            opened={opened}
            onClose={close}
            title={<Text fw={700} size="lg">Report New Error</Text>}
            radius="xl"
            size="lg"
            overlayProps={{ backgroundOpacity: 0.55, blur: 3 }}
          >
            <Stack gap="md">
              <Textarea
                label="Description"
                placeholder="What happened? Describe the error in detail..."
                required
                minRows={3}
                value={createForm.description}
                onChange={(e) => setCreateForm({ ...createForm, description: e.target.value })}
              />

              <SimpleGrid cols={2}>
                <Select
                  label="Application"
                  data={[
                    { value: 'desa-plus', label: 'Desa+' },
                    { value: 'hipmi', label: 'Hipmi' },
                  ]}
                  value={createForm.app}
                  onChange={(val) => setCreateForm({ ...createForm, app: val as any })}
                />
                <Select
                  label="Source"
                  data={[
                    { value: 'USER', label: 'User' },
                    { value: 'QC', label: 'QC' },
                    { value: 'SYSTEM', label: 'System' },
                  ]}
                  value={createForm.source}
                  onChange={(val) => setCreateForm({ ...createForm, source: val as any })}
                />
              </SimpleGrid>

              <SimpleGrid cols={2}>
                <TextInput
                  label="Version"
                  placeholder="e.g. 2.4.1"
                  required
                  value={createForm.affectedVersion}
                  onChange={(e) => setCreateForm({ ...createForm, affectedVersion: e.target.value })}
                />
                <Select
                  label="Initial Status"
                  data={[
                    { value: 'OPEN', label: 'Open' },
                    { value: 'ON_HOLD', label: 'On Hold' },
                    { value: 'IN_PROGRESS', label: 'In Progress' },
                  ]}
                  value={createForm.status}
                  onChange={(val) => setCreateForm({ ...createForm, status: val as any })}
                />
              </SimpleGrid>

              <SimpleGrid cols={2}>
                <TextInput
                  label="Device"
                  placeholder="e.g. iPhone 13, Windows 11 PC"
                  required
                  value={createForm.device}
                  onChange={(e) => setCreateForm({ ...createForm, device: e.target.value })}
                />
                <TextInput
                  label="OS"
                  placeholder="e.g. iOS 15.4, Windows 11"
                  required
                  value={createForm.os}
                  onChange={(e) => setCreateForm({ ...createForm, os: e.target.value })}
                />
              </SimpleGrid>

              <TextInput
                label="Image URL (Optional)"
                placeholder="https://example.com/screenshot.png"
                value={createForm.imageUrl}
                onChange={(e) => setCreateForm({ ...createForm, imageUrl: e.target.value })}
              />

              <Textarea
                label="Stack Trace (Optional)"
                placeholder="Paste code or error logs here..."
                style={{ fontFamily: 'monospace' }}
                minRows={2}
                value={createForm.stackTrace}
                onChange={(e) => setCreateForm({ ...createForm, stackTrace: e.target.value })}
              />

              <Button
                fullWidth
                mt="md"
                variant="gradient"
                gradient={{ from: '#2563EB', to: '#7C3AED', deg: 135 }}
                loading={isSubmitting}
                onClick={handleCreateBug}
              >
                Submit Error Report
              </Button>
            </Stack>
          </Modal>

          <Paper withBorder radius="2xl" className="glass" p="md">
            <SimpleGrid cols={{ base: 1, sm: 4 }} mb="md">
              <TextInput
                placeholder="Search description, device, os..."
                leftSection={<TbSearch size={16} />}
                value={search}
                onChange={(e) => setSearch(e.currentTarget.value)}
                radius="md"
              />
              <Select
                placeholder="Application"
                data={[
                  { value: 'all', label: 'All Applications' },
                  { value: 'desa-plus', label: 'Desa+' },
                  { value: 'hipmi', label: 'Hipmi' },
                ]}
                value={app}
                onChange={(val) => setApp(val || 'all')}
                radius="md"
              />
              <Select
                placeholder="Status"
                data={[
                  { value: 'all', label: 'All Status' },
                  { value: 'OPEN', label: 'Open' },
                  { value: 'ON_HOLD', label: 'On Hold' },
                  { value: 'IN_PROGRESS', label: 'In Progress' },
                  { value: 'RESOLVED', label: 'Resolved' },
                  { value: 'RELEASED', label: 'Released' },
                  { value: 'CLOSED', label: 'Closed' },
                ]}
                value={status}
                onChange={(val) => setStatus(val || 'all')}
                radius="md"
              />
              <Group justify="flex-end">
                <Button variant="subtle" color="gray" leftSection={<TbFilter size={16} />} onClick={() => {setSearch(''); setApp('all'); setStatus('all')}}>
                  Reset
                </Button>
              </Group>
            </SimpleGrid>

            {isLoading ? (
              <Stack align="center" py="xl">
                <Loader size="lg" type="dots" />
                <Text size="sm" c="dimmed">Loading error reports...</Text>
              </Stack>
            ) : bugs.length === 0 ? (
              <Paper p="xl" withBorder style={{ borderStyle: 'dashed', textAlign: 'center' }}>
                <TbBug size={48} color="gray" style={{ marginBottom: 12, opacity: 0.5 }} />
                <Text fw={600}>No error reports found</Text>
                <Text size="sm" c="dimmed">Try adjusting your filters or search terms.</Text>
              </Paper>
            ) : (
              <Accordion variant="separated" radius="xl">
                {bugs.map((bug: any) => (
                  <Accordion.Item
                    key={bug.id}
                    value={bug.id}
                    style={{
                      border: '1px solid var(--mantine-color-default-border)',
                      background: 'var(--mantine-color-default)',
                      marginBottom: '12px',
                    }}
                  >
                    <Accordion.Control>
                      <Group wrap="nowrap">
                        <ThemeIcon
                          color={
                            bug.status === 'OPEN'
                              ? 'red'
                              : bug.status === 'IN_PROGRESS'
                              ? 'blue'
                              : 'teal'
                          }
                          variant="light"
                          size="lg"
                          radius="md"
                        >
                          <TbAlertTriangle size={20} />
                        </ThemeIcon>
                        <Box style={{ flex: 1 }}>
                          <Group justify="space-between">
                            <Text size="sm" fw={600} lineClamp={1}>
                              {bug.description}
                            </Text>
                            <Badge
                              color={
                                bug.status === 'OPEN'
                                  ? 'red'
                                  : bug.status === 'IN_PROGRESS'
                                  ? 'blue'
                                  : 'teal'
                              }
                              variant="dot"
                              size="xs"
                            >
                              {bug.status}
                            </Badge>
                          </Group>
                          <Group gap="md">
                            <Text size="xs" c="dimmed">
                              {new Date(bug.createdAt).toLocaleString()} • {bug.app?.toUpperCase()} • v{bug.affectedVersion}
                            </Text>
                          </Group>
                        </Box>
                      </Group>
                    </Accordion.Control>
                    <Accordion.Panel>
                      <Stack gap="lg" py="xs">
                        {/* Device Info */}
                        <SimpleGrid cols={{ base: 1, sm: 2 }} spacing="lg">
                          <Box>
                            <Text size="xs" fw={700} c="dimmed" mb={4}>DEVICE METADATA</Text>
                            <Group gap="xs">
                              {bug.device.toLowerCase().includes('windows') || bug.device.toLowerCase().includes('mac') || bug.device.toLowerCase().includes('pc') ? (
                                <TbDeviceDesktop size={14} color="gray" />
                              ) : (
                                <TbDeviceMobile size={14} color="gray" />
                              )}
                              <Text size="xs" fw={500}>{bug.device} ({bug.os})</Text>
                            </Group>
                          </Box>
                          <Box>
                            <Text size="xs" fw={700} c="dimmed" mb={4}>SOURCE</Text>
                            <Badge variant="light" color="gray" size="sm">{bug.source}</Badge>
                          </Box>
                        </SimpleGrid>

                        {/* Feedback & Reporter Info */}
                        {(bug.user || bug.feedBack) && (
                          <SimpleGrid cols={{ base: 1, sm: 2 }} spacing="lg">
                            {bug.user && (
                              <Box>
                                <Text size="xs" fw={700} c="dimmed" mb={4}>REPORTED BY</Text>
                                <Group gap="xs">
                                  <Avatar src={bug.user.image} radius="xl" size="sm" color="blue">
                                    {bug.user.name?.charAt(0).toUpperCase()}
                                  </Avatar>
                                  <Text size="sm">{bug.user.name}</Text>
                                </Group>
                              </Box>
                            )}
                            {bug.feedBack && (
                              <Box>
                                <Text size="xs" fw={700} c="dimmed" mb={4}>DEVELOPER FEEDBACK</Text>
                                <Text size="sm" style={{ whiteSpace: 'pre-wrap' }}>{bug.feedBack}</Text>
                              </Box>
                            )}
                          </SimpleGrid>
                        )}

                        {/* Stack Trace */}
                        {bug.stackTrace && (
                          <Box>
                            <Text size="xs" fw={700} c="dimmed" mb={4}>STACK TRACE</Text>
                            <Code
                              block
                              color="red"
                              style={{
                                fontFamily: 'monospace',
                                whiteSpace: 'pre-wrap',
                                fontSize: '11px',
                                border: '1px solid var(--mantine-color-default-border)',
                              }}
                            >
                              {bug.stackTrace}
                            </Code>
                          </Box>
                        )}

                        {/* Images */}
                        {bug.images && bug.images.length > 0 && (
                          <Box>
                            <Group gap="xs" mb={8}>
                              <TbPhoto size={16} color="gray" />
                              <Text size="xs" fw={700} c="dimmed">ATTACHED IMAGES ({bug.images.length})</Text>
                            </Group>
                            <SimpleGrid cols={{ base: 2, sm: 4 }} spacing="xs">
                              {bug.images.map((img: any) => (
                                <Paper key={img.id} withBorder radius="md" style={{ overflow: 'hidden' }}>
                                  <Image src={img.imageUrl} alt="Error screenshot" height={100} fit="cover" />
                                </Paper>
                              ))}
                            </SimpleGrid>
                          </Box>
                        )}

                        {/* Logs / History */}
                        {bug.logs && bug.logs.length > 0 && (
                          <Box>
                            <Group justify="space-between" mb={showLogs[bug.id] ? 12 : 0}>
                              <Group gap="xs">
                                <TbHistory size={16} color="gray" />
                                <Text size="xs" fw={700} c="dimmed">ACTIVITY LOG ({bug.logs.length})</Text>
                              </Group>
                              <Button 
                                variant="subtle" 
                                size="compact-xs" 
                                color="gray" 
                                onClick={() => toggleLogs(bug.id)}
                              >
                                {showLogs[bug.id] ? 'Hide' : 'Show'}
                              </Button>
                            </Group>
                            <Collapse in={showLogs[bug.id]}>
                              <Timeline active={bug.logs.length - 1} bulletSize={24} lineWidth={2} mt="md">
                                {bug.logs.map((log: any) => (
                                  <Timeline.Item
                                    key={log.id}
                                    bullet={
                                      <Badge size="xs" circle color={log.status === 'RESOLVED' ? 'teal' : 'blue'}> </Badge>
                                    }
                                    title={<Text size="sm" fw={600}>{log.status}</Text>}
                                  >
                                    <Text size="xs" c="dimmed" mb={4}>
                                      {new Date(log.createdAt).toLocaleString()} by {log.user?.name || 'Unknown'}
                                    </Text>
                                    <Text size="sm">{log.description}</Text>
                                  </Timeline.Item>
                                ))}
                              </Timeline>
                            </Collapse>
                          </Box>
                        )}

                        <Group justify="flex-end" pt="sm">
                          <Button variant="light" size="compact-xs" color="blue" onClick={() => {
                            setSelectedBugId(bug.id)
                            setFeedbackForm({ feedBack: bug.feedBack || '' })
                            openFeedbackModal()
                          }}>Developer Feedback</Button>
                          <Button variant="light" size="compact-xs" color="teal" onClick={() => {
                            setSelectedBugId(bug.id)
                            setUpdateForm({ status: bug.status, description: '' })
                            openUpdateModal()
                          }}>Update Status</Button>
                        </Group>
                      </Stack>
                    </Accordion.Panel>
                  </Accordion.Item>
                ))}
              </Accordion>
            )}

            {totalPages > 1 && (
              <Group justify="center" mt="xl">
                <Pagination total={totalPages} value={page} onChange={setPage} radius="xl" />
              </Group>
            )}
          </Paper>
        </Stack>
      </Container>
    </DashboardLayout>
  )
}