import {
  Container,
  Stack,
  Group,
  Paper,
  ThemeIcon,
  Box,
  Grid,
  Flex,
  Text,
  rem,
  useMantineTheme,
} from '@pikku/mantine/core'
import {
  IconIdBadge2,
  IconWorld,
  IconBriefcase,
  IconSchool,
} from '@tabler/icons-react'
import { Qualification } from './Qualification'
import { QualificationSectionStatusCard } from './QualificationSectionStatusCard'
import { CandidateResults } from '@heygermany/sdk'
import { useI18n } from '@/context/i18n-provider'
import { asI18n } from '@pikku/react'

interface QualificationData {
  title: string
  description: string
  status: string
  requirements: string[]
  steps?: string[]
  progress?: number
}

type SectionOut = {
  key: "education" | "license" | "language" | "additional"
  title: string
  color: "education" | "license" | "language" | "additional"
  icon: string
  qualifications: QualificationData[]
}

const ICONS: Record<string, React.ReactElement> = {
  school: <IconSchool size={38} />,
  "id-badge": <IconIdBadge2 size={38} />,
  world: <IconWorld size={38} />,
  briefcase: <IconBriefcase size={38} />,
};

const getQualificationSectionStatus = (
  title: string,
  qualifications: QualificationData[]
) => {
  const statuses = qualifications.map((q) => q.status)

  if (statuses.includes('in-progress')) return 'in-progress'
  if (statuses.every((s) => s === 'completed')) return 'completed'
  if (statuses.every((s) => s === 'required')) return 'required'
  if (statuses.includes('optional')) return 'optional'

  return 'required'
}

function buildSections(candidateResults: CandidateResults, t: any): SectionOut[] {
  return [
    {
      key: "education",
      title: t('enums.qualificationsections.education'),
      color: "education",
      icon: "school",
      qualifications: [candidateResults.education],
    },
    {
      key: "license",
      title: t('enums.qualificationsections.license'),
      color: "license",
      icon: "id-badge",
      qualifications: [candidateResults.license],
    },
    {
      key: "language",
      title: t('enums.qualificationsections.language'),
      color: "language",
      icon: "world",
      qualifications: [candidateResults.language],
    },
    {
      key: "additional",
      title: t('enums.qualificationsections.additional'),
      color: "additional",
      icon: "briefcase",
      qualifications: [candidateResults.experience, candidateResults.copies, candidateResults.originals],
    },
  ]
}

export const QualificationsSection: React.FunctionComponent<{ candidateResults: CandidateResults }> = ({ candidateResults }) => {
  const t = useI18n()
  const sections = buildSections(candidateResults, t)
  const theme = useMantineTheme()
  const mainSections = sections.slice(0, 3) // Education, License, Language
  const additionalSection = sections[3] // Additional Requirements

  return (
    <>
      <Container size="xl" py="xl" maw="full">
        <Stack gap="xl">
          <Flex wrap="wrap" gap="md" justify="center">
            {sections.map((section, i) => (
              <QualificationSectionStatusCard
                key={i}
                label={section.title}
                status={section.color === 'additional' ? 'required' : getQualificationSectionStatus(section.title, section.qualifications)}
                color={`var(--mantine-color-${section.color}-6)`}
                icon={ICONS[section.icon]}
              />
            ))}
          </Flex>
        </Stack>
      </Container>

      <Box bg={theme.colors.gray[0]}>
        <Container bg={theme.colors.gray[0]} size="xl" py="xl" maw="full">
          <Grid mt="xl" grow>
            {mainSections.map((section, sectionIndex) => (
              <Grid.Col key={sectionIndex} span={{ base: 12, md: 4 }} mt="xl">
                <Group align="center" mb="lg">
                  <ThemeIcon variant="transparent" color={section.color} size="xl" radius="md">{ICONS[section.icon]}</ThemeIcon>
                  <Text c={`${theme.colors.gray[7]}`} size="xl" fw={700}>
                    {asI18n(section.title)}
                  </Text>
                </Group>

                <Flex
                  gap="md"
                  flex={1}
                  align="stretch"
                  h='full'
                >
                  {section.qualifications.map((qualification, qualIndex) => (
                    <Qualification
                      key={qualIndex}
                      title={qualification.title}
                      description={qualification.description}
                      status={qualification.status}
                      requirements={qualification.requirements}
                      steps={qualification.steps}
                      progress={qualification.progress}
                    />
                  ))}
                </Flex>
              </Grid.Col>
            ))}
          </Grid>

        <Box mb="md" mt={rem(80)}>
          <Group align="center" mb="lg" gap="sm">
            {ICONS[additionalSection.icon]}
            <Text fw={700} size="xl">
              {asI18n(additionalSection.title)}
            </Text>
          </Group>

          <Grid>
            {additionalSection.qualifications.map(
              (qualification, qualIndex) => (
                <Grid.Col key={qualIndex} span={{ base: 12, md: 4 }}>
                  <Paper shadow="xs" radius="lg" h="100%">
                    <Qualification
                      title={qualification.title}
                      description={qualification.description}
                      status={qualification.status}
                      requirements={qualification.requirements}
                      steps={qualification.steps}
                      progress={qualification.progress}
                    />
                  </Paper>
                </Grid.Col>
              )
            )}
          </Grid>
        </Box>
      </Container>
        </Box>
    </>
  )
}