'use client'

import type { ReactNode } from 'react'
import { toast } from '@langgenius/dify-ui/toast'
import { useQueryClient } from '@tanstack/react-query'
import dayjs from 'dayjs'
import { useEffect, useState } from 'react'
import { useTranslation } from 'react-i18next'
import { setZendeskConversationFields } from '@/app/components/base/zendesk/utils'
import { defaultPlan } from '@/app/components/billing/config'
import { parseCurrentPlan } from '@/app/components/billing/utils'
import {
  CurrentSystemQuotaTypeEnum,
  ModelStatusEnum,
  ModelTypeEnum,
} from '@/app/components/header/account-setting/model-provider-page/declarations'
import { ZENDESK_FIELD_IDS } from '@/config'
import { fetchCurrentPlanInfo } from '@/service/billing'
import {
  useModelListByType,
  useModelProviders,
  useSupportRetrievalMethods,
} from '@/service/use-common'
import { useEducationStatus } from '@/service/use-education'
import { ProviderContext } from './provider-context'

type ProviderContextProviderProps = {
  children: ReactNode
}

type MemberInviteLimit = {
  size: number
  limit: number
}

const unlimitedMemberInviteLimit: MemberInviteLimit = {
  size: 0,
  limit: 0,
}

const resolveMemberInviteLimit = (data: Awaited<ReturnType<typeof fetchCurrentPlanInfo>>): MemberInviteLimit => {
  if (!data)
    return unlimitedMemberInviteLimit

  if (data.workspace_members?.enabled) {
    return {
      size: data.workspace_members.size,
      limit: data.workspace_members.limit,
    }
  }

  if (data.billing?.enabled && data.members?.limit > 0) {
    return {
      size: data.members.size,
      limit: data.members.limit,
    }
  }

  return unlimitedMemberInviteLimit
}

export const ProviderContextProvider = ({
  children,
}: ProviderContextProviderProps) => {
  const queryClient = useQueryClient()
  const { data: providersData } = useModelProviders()
  const { data: textGenerationModelList } = useModelListByType(ModelTypeEnum.textGeneration)
  const { data: supportRetrievalMethods } = useSupportRetrievalMethods()

  const [plan, setPlan] = useState(defaultPlan)
  const [isFetchedPlan, setIsFetchedPlan] = useState(false)
  const [isFetchedPlanInfo, setIsFetchedPlanInfo] = useState(false)
  const [enableBilling, setEnableBilling] = useState(true)
  const [enableReplaceWebAppLogo, setEnableReplaceWebAppLogo] = useState(false)
  const [modelLoadBalancingEnabled, setModelLoadBalancingEnabled] = useState(false)
  const [datasetOperatorEnabled, setDatasetOperatorEnabled] = useState(false)
  const [webappCopyrightEnabled, setWebappCopyrightEnabled] = useState(false)
  const [licenseLimit, setLicenseLimit] = useState({
    workspace_members: {
      size: 0,
      limit: 0,
    },
  })

  const [enableEducationPlan, setEnableEducationPlan] = useState(false)
  const [isEducationWorkspace, setIsEducationWorkspace] = useState(false)
  const { data: educationAccountInfo, isLoading: isLoadingEducationAccountInfo, isFetching: isFetchingEducationAccountInfo, isFetchedAfterMount: isEducationDataFetchedAfterMount } = useEducationStatus(!enableEducationPlan)
  const [isAllowTransferWorkspace, setIsAllowTransferWorkspace] = useState(false)
  const [isAllowPublishAsCustomKnowledgePipelineTemplate, setIsAllowPublishAsCustomKnowledgePipelineTemplate] = useState(false)
  const [humanInputEmailDeliveryEnabled, setHumanInputEmailDeliveryEnabled] = useState(false)

  const refreshModelProviders = () => {
    queryClient.invalidateQueries({ queryKey: ['common', 'model-providers'] })
  }

  const fetchPlan = async () => {
    try {
      const data = await fetchCurrentPlanInfo()
      if (!data) {
        console.error('Failed to fetch plan info: data is undefined')
        return
      }

      // set default value to avoid undefined error
      setEnableBilling(data.billing?.enabled ?? false)
      setEnableEducationPlan(data.education?.enabled ?? false)
      setIsEducationWorkspace(data.education?.activated ?? false)
      setEnableReplaceWebAppLogo(data.can_replace_logo ?? false)

      if (data.billing?.enabled) {
        setPlan(parseCurrentPlan(data) as any)
        setIsFetchedPlan(true)
      }

      if (data.model_load_balancing_enabled)
        setModelLoadBalancingEnabled(true)
      if (data.dataset_operator_enabled)
        setDatasetOperatorEnabled(true)
      if (data.webapp_copyright_enabled)
        setWebappCopyrightEnabled(true)
      setLicenseLimit({ workspace_members: resolveMemberInviteLimit(data) })
      if (data.is_allow_transfer_workspace)
        setIsAllowTransferWorkspace(data.is_allow_transfer_workspace)
      if (data.knowledge_pipeline?.publish_enabled)
        setIsAllowPublishAsCustomKnowledgePipelineTemplate(data.knowledge_pipeline?.publish_enabled)
      if (data.human_input_email_delivery_enabled)
        setHumanInputEmailDeliveryEnabled(data.human_input_email_delivery_enabled)
    }
    catch (error) {
      console.error('Failed to fetch plan info:', error)
      // set default value to avoid undefined error
      setEnableBilling(false)
      setEnableEducationPlan(false)
      setIsEducationWorkspace(false)
      setEnableReplaceWebAppLogo(false)
    }
    finally {
      setIsFetchedPlanInfo(true)
    }
  }
  useEffect(() => {
    fetchPlan()
  }, [])

  // #region Zendesk conversation fields
  useEffect(() => {
    if (ZENDESK_FIELD_IDS.PLAN && plan.type) {
      setZendeskConversationFields([{
        id: ZENDESK_FIELD_IDS.PLAN,
        value: `${plan.type}-plan`,
      }])
    }
  }, [plan.type])
  // #endregion Zendesk conversation fields

  const { t } = useTranslation()
  useEffect(() => {
    if (localStorage.getItem('anthropic_quota_notice') === 'true')
      return

    if (dayjs().isAfter(dayjs('2025-03-17')))
      return

    if (providersData?.data && providersData.data.length > 0) {
      const anthropic = providersData.data.find(provider => provider.provider === 'anthropic')
      if (anthropic && anthropic.system_configuration.current_quota_type === CurrentSystemQuotaTypeEnum.trial) {
        const quota = anthropic.system_configuration.quota_configurations.find(item => item.quota_type === anthropic.system_configuration.current_quota_type)
        if (quota && quota.is_valid && quota.quota_used < quota.quota_limit) {
          localStorage.setItem('anthropic_quota_notice', 'true')
          toast.info(t('provider.anthropicHosted.trialQuotaTip', { ns: 'common' }), {
            timeout: 60000,
          })
        }
      }
    }
  }, [providersData, t])

  return (
    <ProviderContext.Provider value={{
      modelProviders: providersData?.data || [],
      refreshModelProviders,
      textGenerationModelList: textGenerationModelList?.data || [],
      isAPIKeySet: !!textGenerationModelList?.data?.some(model => model.status === ModelStatusEnum.active),
      supportRetrievalMethods: supportRetrievalMethods?.retrieval_method || [],
      plan,
      isFetchedPlan,
      isFetchedPlanInfo,
      enableBilling,
      onPlanInfoChanged: fetchPlan,
      enableReplaceWebAppLogo,
      modelLoadBalancingEnabled,
      datasetOperatorEnabled,
      enableEducationPlan,
      isEducationWorkspace,
      isEducationAccount: isEducationDataFetchedAfterMount ? (educationAccountInfo?.is_student ?? false) : false,
      allowRefreshEducationVerify: isEducationDataFetchedAfterMount ? (educationAccountInfo?.allow_refresh ?? false) : false,
      educationAccountExpireAt: isEducationDataFetchedAfterMount ? (educationAccountInfo?.expire_at ?? null) : null,
      isLoadingEducationAccountInfo,
      isFetchingEducationAccountInfo,
      webappCopyrightEnabled,
      licenseLimit,
      refreshLicenseLimit: fetchPlan,
      isAllowTransferWorkspace,
      isAllowPublishAsCustomKnowledgePipelineTemplate,
      humanInputEmailDeliveryEnabled,
    }}
    >
      {children}
    </ProviderContext.Provider>
  )
}