import {View} from 'react-native'
import React, {useMemo} from 'react'
import {AtUri, ComAtprotoModerationDefs} from '@atproto/api'

import {Text} from '../../util/text/Text'
import {UsePaletteValue, usePalette} from 'lib/hooks/usePalette'
import {RadioGroup, RadioGroupItem} from 'view/com/util/forms/RadioGroup'
import {CollectionId} from './types'

type ReasonMap = Record<string, {title: string; description: string}>
const CommonReasons = {
  [ComAtprotoModerationDefs.REASONRUDE]: {
    title: 'Anti-Social Behavior',
    description: 'Harassment, trolling, or intolerance',
  },
  [ComAtprotoModerationDefs.REASONVIOLATION]: {
    title: 'Illegal and Urgent',
    description: 'Glaring violations of law or terms of service',
  },
  [ComAtprotoModerationDefs.REASONOTHER]: {
    title: 'Other',
    description: 'An issue not included in these options',
  },
}
const CollectionToReasonsMap: Record<string, ReasonMap> = {
  [CollectionId.Post]: {
    [ComAtprotoModerationDefs.REASONSPAM]: {
      title: 'Spam',
      description: 'Excessive mentions or replies',
    },
    [ComAtprotoModerationDefs.REASONSEXUAL]: {
      title: 'Unwanted Sexual Content',
      description: 'Nudity or pornography not labeled as such',
    },
    __copyright__: {
      title: 'Copyright Violation',
      description: 'Contains copyrighted material',
    },
    ...CommonReasons,
  },
  [CollectionId.List]: {
    ...CommonReasons,
    [ComAtprotoModerationDefs.REASONVIOLATION]: {
      title: 'Name or Description Violates Community Standards',
      description: 'Terms used violate community standards',
    },
  },
}
const AccountReportReasons = {
  [ComAtprotoModerationDefs.REASONMISLEADING]: {
    title: 'Misleading Account',
    description: 'Impersonation or false claims about identity or affiliation',
  },
  [ComAtprotoModerationDefs.REASONSPAM]: {
    title: 'Frequently Posts Unwanted Content',
    description: 'Spam; excessive mentions or replies',
  },
  [ComAtprotoModerationDefs.REASONVIOLATION]: {
    title: 'Name or Description Violates Community Standards',
    description: 'Terms used violate community standards',
  },
}

const Option = ({
  pal,
  title,
  description,
}: {
  pal: UsePaletteValue
  description: string
  title: string
}) => {
  return (
    <View>
      <Text style={pal.text} type="md-bold">
        {title}
      </Text>
      <Text style={pal.textLight}>{description}</Text>
    </View>
  )
}

// This is mostly just content copy without almost any logic
// so this may grow over time and it makes sense to split it up into its own file
// to keep it separate from the actual reporting modal logic
const useReportRadioOptions = (pal: UsePaletteValue, atUri: AtUri | null) =>
  useMemo(() => {
    let items: ReasonMap = {...CommonReasons}
    // If no atUri is passed, that means the reporting collection is account
    if (!atUri) {
      items = {...AccountReportReasons}
    }

    if (atUri?.collection && CollectionToReasonsMap[atUri.collection]) {
      items = {...CollectionToReasonsMap[atUri.collection]}
    }

    return Object.entries(items).map(([key, {title, description}]) => ({
      key,
      label: <Option pal={pal} title={title} description={description} />,
    }))
  }, [pal, atUri])

export const ReportReasonOptions = ({
  atUri,
  selectedIssue,
  onSelectIssue,
}: {
  atUri: AtUri | null
  selectedIssue?: string
  onSelectIssue: (key: string) => void
}) => {
  const pal = usePalette('default')
  const ITEMS: RadioGroupItem[] = useReportRadioOptions(pal, atUri)
  return (
    <RadioGroup
      items={ITEMS}
      onSelect={onSelectIssue}
      testID="reportReasonRadios"
      initialSelection={selectedIssue}
    />
  )
}