'use client'

import { createContext, useContext } from 'use-context-selector'
import useSWR from 'swr'
import { useEffect, useMemo, useState } from 'react'
import {
  fetchModelList,
  fetchModelProviders,
  fetchSupportRetrievalMethods,
} from '@/service/common'
import {
  ModelFeatureEnum,
  ModelStatusEnum,
  ModelTypeEnum,
} from '@/app/components/header/account-setting/model-provider-page/declarations'
import type { Model, ModelProvider } from '@/app/components/header/account-setting/model-provider-page/declarations'
import type { RETRIEVE_METHOD } from '@/types/app'
import { Plan, type UsagePlanInfo } from '@/app/components/billing/type'
import { fetchCurrentPlanInfo } from '@/service/billing'
import { parseCurrentPlan } from '@/app/components/billing/utils'
import { defaultPlan } from '@/app/components/billing/config'

const ProviderContext = createContext<{
  modelProviders: ModelProvider[]
  textGenerationModelList: Model[]
  agentThoughtModelList: Model[]
  supportRetrievalMethods: RETRIEVE_METHOD[]
  hasSettedApiKey: boolean
  plan: {
    type: Plan
    usage: UsagePlanInfo
    total: UsagePlanInfo
  }
  isFetchedPlan: boolean
  enableBilling: boolean
  onPlanInfoChanged: () => void
  enableReplaceWebAppLogo: boolean
}>({
      modelProviders: [],
      textGenerationModelList: [],
      agentThoughtModelList: [],
      supportRetrievalMethods: [],
      hasSettedApiKey: true,
      plan: {
        type: Plan.sandbox,
        usage: {
          vectorSpace: 32,
          buildApps: 12,
          teamMembers: 1,
          annotatedResponse: 1,
        },
        total: {
          vectorSpace: 200,
          buildApps: 50,
          teamMembers: 1,
          annotatedResponse: 10,
        },
      },
      isFetchedPlan: false,
      enableBilling: false,
      onPlanInfoChanged: () => { },
      enableReplaceWebAppLogo: false,
    })

export const useProviderContext = () => useContext(ProviderContext)

type ProviderContextProviderProps = {
  children: React.ReactNode
}
export const ProviderContextProvider = ({
  children,
}: ProviderContextProviderProps) => {
  const { data: providersData } = useSWR('/workspaces/current/model-providers', fetchModelProviders)
  const fetchModelListUrlPrefix = '/workspaces/current/models/model-types/'
  const { data: textGenerationModelList } = useSWR(`${fetchModelListUrlPrefix}${ModelTypeEnum.textGeneration}`, fetchModelList)
  const { data: supportRetrievalMethods } = useSWR('/datasets/retrieval-setting', fetchSupportRetrievalMethods)

  const agentThoughtModelList = useMemo(() => {
    const result: Model[] = []
    if (textGenerationModelList?.data) {
      textGenerationModelList?.data.forEach((item) => {
        const agentThoughtModels = item.models.filter(model => model.features?.includes(ModelFeatureEnum.agentThought))

        if (agentThoughtModels.length) {
          result.push({
            ...item,
            models: agentThoughtModels,
          })
        }
      })

      return result
    }

    return []
  }, [textGenerationModelList])

  const [plan, setPlan] = useState(defaultPlan)
  const [isFetchedPlan, setIsFetchedPlan] = useState(false)
  const [enableBilling, setEnableBilling] = useState(true)
  const [enableReplaceWebAppLogo, setEnableReplaceWebAppLogo] = useState(false)

  const fetchPlan = async () => {
    const data = await fetchCurrentPlanInfo()
    const enabled = data.billing.enabled
    setEnableBilling(enabled)
    setEnableReplaceWebAppLogo(data.can_replace_logo)
    if (enabled) {
      setPlan(parseCurrentPlan(data))
      setIsFetchedPlan(true)
    }
  }
  useEffect(() => {
    fetchPlan()
  }, [])

  return (
    <ProviderContext.Provider value={{
      modelProviders: providersData?.data || [],
      textGenerationModelList: textGenerationModelList?.data || [],
      agentThoughtModelList,
      hasSettedApiKey: !!textGenerationModelList?.data.some(model => model.status === ModelStatusEnum.active),
      supportRetrievalMethods: supportRetrievalMethods?.retrieval_method || [],
      plan,
      isFetchedPlan,
      enableBilling,
      onPlanInfoChanged: fetchPlan,
      enableReplaceWebAppLogo,
    }}>
      {children}
    </ProviderContext.Provider>
  )
}

export default ProviderContext
