import type {
  FC,
  ReactNode,
} from 'react'
import type {
  DefaultModel,
  FormValue,
  ModelFeatureEnum,
} from '@/app/components/header/account-setting/model-provider-page/declarations'
import type { TriggerProps } from '@/app/components/header/account-setting/model-provider-page/model-parameter-modal/trigger'
import { cn } from '@langgenius/dify-ui/cn'
import {
  Popover,
  PopoverContent,
  PopoverTrigger,
} from '@langgenius/dify-ui/popover'
import { toast } from '@langgenius/dify-ui/toast'
import { useMemo, useState } from 'react'
import { useTranslation } from 'react-i18next'
import { ModelStatusEnum, ModelTypeEnum } from '@/app/components/header/account-setting/model-provider-page/declarations'
import {
  useModelList,
} from '@/app/components/header/account-setting/model-provider-page/hooks'
import AgentModelTrigger from '@/app/components/header/account-setting/model-provider-page/model-parameter-modal/agent-model-trigger'
import Trigger from '@/app/components/header/account-setting/model-provider-page/model-parameter-modal/trigger'
import ModelSelector from '@/app/components/header/account-setting/model-provider-page/model-selector'
import { useProviderContext } from '@/context/provider-context'
import { fetchAndMergeValidCompletionParams } from '@/utils/completion-params'
import LLMParamsPanel from './llm-params-panel'
import TTSParamsPanel from './tts-params-panel'

type ModelParameterModalProps = {
  popupClassName?: string
  isAdvancedMode: boolean
  value: any
  setModel: (model: any) => void
  renderTrigger?: (v: TriggerProps) => ReactNode
  readonly?: boolean
  isInWorkflow?: boolean
  isAgentStrategy?: boolean
  scope?: string
}

const ModelParameterModal: FC<ModelParameterModalProps> = ({
  popupClassName,
  isAdvancedMode,
  value,
  setModel,
  renderTrigger,
  readonly,
  isInWorkflow,
  isAgentStrategy,
  scope = ModelTypeEnum.textGeneration,
}) => {
  const { t } = useTranslation()
  const { isAPIKeySet } = useProviderContext()
  const [open, setOpen] = useState(false)
  const scopeArray = scope.split('&')
  const scopeFeatures = useMemo((): ModelFeatureEnum[] => {
    if (scopeArray.includes('all'))
      return []
    return scopeArray.filter(item => ![
      ModelTypeEnum.textGeneration,
      ModelTypeEnum.textEmbedding,
      ModelTypeEnum.rerank,
      ModelTypeEnum.moderation,
      ModelTypeEnum.speech2text,
      ModelTypeEnum.tts,
    ].includes(item as ModelTypeEnum)).map(item => item as ModelFeatureEnum)
  }, [scopeArray])

  const { data: textGenerationList } = useModelList(ModelTypeEnum.textGeneration)
  const { data: textEmbeddingList } = useModelList(ModelTypeEnum.textEmbedding)
  const { data: rerankList } = useModelList(ModelTypeEnum.rerank)
  const { data: moderationList } = useModelList(ModelTypeEnum.moderation)
  const { data: sttList } = useModelList(ModelTypeEnum.speech2text)
  const { data: ttsList } = useModelList(ModelTypeEnum.tts)

  const scopedModelList = useMemo(() => {
    const resultList: any[] = []
    if (scopeArray.includes('all')) {
      return [
        ...textGenerationList,
        ...textEmbeddingList,
        ...rerankList,
        ...sttList,
        ...ttsList,
        ...moderationList,
      ]
    }
    if (scopeArray.includes(ModelTypeEnum.textGeneration))
      return textGenerationList
    if (scopeArray.includes(ModelTypeEnum.textEmbedding))
      return textEmbeddingList
    if (scopeArray.includes(ModelTypeEnum.rerank))
      return rerankList
    if (scopeArray.includes(ModelTypeEnum.moderation))
      return moderationList
    if (scopeArray.includes(ModelTypeEnum.speech2text))
      return sttList
    if (scopeArray.includes(ModelTypeEnum.tts))
      return ttsList
    return resultList
  }, [scopeArray, textGenerationList, textEmbeddingList, rerankList, sttList, ttsList, moderationList])

  const { currentProvider, currentModel } = useMemo(() => {
    const currentProvider = scopedModelList.find(item => item.provider === value?.provider)
    const currentModel = currentProvider?.models.find((model: { model: string }) => model.model === value?.model)
    return {
      currentProvider,
      currentModel,
    }
  }, [scopedModelList, value?.provider, value?.model])

  const hasDeprecated = !currentProvider || !currentModel
  const disabled = !isAPIKeySet || hasDeprecated || currentModel?.status !== ModelStatusEnum.active

  const handleChangeModel = async ({ provider, model }: DefaultModel) => {
    const targetProvider = scopedModelList.find(modelItem => modelItem.provider === provider)
    const targetModelItem = targetProvider?.models.find((modelItem: { model: string }) => modelItem.model === model)
    const model_type = targetModelItem?.model_type as string

    let nextCompletionParams: FormValue = {}

    if (model_type === ModelTypeEnum.textGeneration) {
      try {
        const { params: filtered, removedDetails } = await fetchAndMergeValidCompletionParams(
          provider,
          model,
          value?.completion_params,
          isAdvancedMode,
        )
        nextCompletionParams = filtered

        const keys = Object.keys(removedDetails || {})
        if (keys.length) {
          toast.warning(`${t('modelProvider.parametersInvalidRemoved', { ns: 'common' })}: ${keys.map(k => `${k} (${removedDetails[k]})`).join(', ')}`)
        }
      }
      catch {
        toast.error(t('error', { ns: 'common' }))
      }
    }

    setModel({
      provider,
      model,
      model_type,
      ...(model_type === ModelTypeEnum.textGeneration
        ? {
            mode: targetModelItem?.model_properties.mode as string,
            completion_params: nextCompletionParams,
          }
        : {}),
    })
  }

  const handleLLMParamsChange = (newParams: FormValue) => {
    const newValue = {
      ...value?.completionParams,
      completion_params: newParams,
    }
    setModel({
      ...value,
      ...newValue,
    })
  }

  const handleTTSParamsChange = (language: string, voice: string) => {
    setModel({
      ...value,
      language,
      voice,
    })
  }

  return (
    <Popover
      open={open}
      onOpenChange={(newOpen) => {
        if (readonly)
          return
        setOpen(newOpen)
      }}
    >
      <div className="relative">
        <PopoverTrigger
          render={(
            <button type="button" className="block w-full border-none bg-transparent p-0 text-left text-inherit [font:inherit]">
              {
                renderTrigger
                  ? renderTrigger({
                      open,
                      currentProvider,
                      currentModel,
                      providerName: value?.provider,
                      modelId: value?.model,
                    })
                  : (isAgentStrategy
                      ? (
                          <AgentModelTrigger
                            disabled={disabled}
                            hasDeprecated={hasDeprecated}
                            currentProvider={currentProvider}
                            currentModel={currentModel}
                            providerName={value?.provider}
                            modelId={value?.model}
                            scope={scope}
                          />
                        )
                      : (
                          <Trigger
                            isInWorkflow={isInWorkflow}
                            currentProvider={currentProvider}
                            currentModel={currentModel}
                            providerName={value?.provider}
                            modelId={value?.model}
                          />
                        )
                    )
              }
            </button>
          )}
        />
        <PopoverContent
          placement={isInWorkflow ? 'left' : 'bottom-end'}
          sideOffset={4}
          popupClassName={cn(popupClassName, 'w-[389px] rounded-2xl')}
        >
          <div className="max-h-[420px] overflow-y-auto p-4 pt-3">
            <div className="relative">
              <div className="mb-1 flex h-6 items-center system-sm-semibold text-text-secondary">
                {t('modelProvider.model', { ns: 'common' }).toLocaleUpperCase()}
              </div>
              <ModelSelector
                defaultModel={(value?.provider || value?.model) ? { provider: value?.provider, model: value?.model } : undefined}
                modelList={scopedModelList}
                scopeFeatures={scopeFeatures}
                onSelect={handleChangeModel}
              />
            </div>
            {(currentModel?.model_type === ModelTypeEnum.textGeneration || currentModel?.model_type === ModelTypeEnum.tts) && (
              <div className="my-3 h-px bg-divider-subtle" />
            )}
            {currentModel?.model_type === ModelTypeEnum.textGeneration && (
              <LLMParamsPanel
                provider={value?.provider}
                modelId={value?.model}
                completionParams={value?.completion_params || {}}
                onCompletionParamsChange={handleLLMParamsChange}
                isAdvancedMode={isAdvancedMode}
              />
            )}
            {currentModel?.model_type === ModelTypeEnum.tts && (
              <TTSParamsPanel
                currentModel={currentModel}
                language={value?.language}
                voice={value?.voice}
                onChange={handleTTSParamsChange}
              />
            )}
          </div>
        </PopoverContent>
      </div>
    </Popover>
  )
}

export default ModelParameterModal