/* eslint-disable @typescript-eslint/no-explicit-any */
import React, { useCallback, useEffect, useState } from 'react'

import { InferenceEngine } from '@janhq/core'
import { Button, ScrollArea, Input, Switch, Badge } from '@janhq/joi'

import { useAtom, useSetAtom } from 'jotai'
import { SearchIcon, SettingsIcon } from 'lucide-react'

import { marked } from 'marked'

import SetupRemoteModel from '@/containers/SetupRemoteModel'

import {
  useGetDefaultEngineVariant,
  useGetEngines,
} from '@/hooks/useEngineManagement'

import { formatExtensionsName } from '@/utils/converter'

import { extensionManager } from '@/extension'
import Extension from '@/extension/Extension'
import {
  inActiveEngineProviderAtom,
  showSettingActiveLocalEngineAtom,
} from '@/helpers/atoms/Extension.atom'
import { selectedSettingAtom } from '@/helpers/atoms/Setting.atom'

type EngineExtension = {
  provider: InferenceEngine
} & Extension

const EngineItems = ({ engine }: { engine: InferenceEngine }) => {
  const { defaultEngineVariant } = useGetDefaultEngineVariant(engine)

  const manualDescription = (engine: string) => {
    switch (engine) {
      case InferenceEngine.cortex_llamacpp:
        return 'Fast, efficient local inference engine that runs GGUFmodels directly on your device'

      default:
        break
    }
  }

  const setSelectedSetting = useSetAtom(selectedSettingAtom)

  const [showSettingActiveLocalEngine, setShowSettingActiveLocalEngineAtom] =
    useAtom(showSettingActiveLocalEngineAtom)

  const onSwitchChange = useCallback(
    (name: string) => {
      if (showSettingActiveLocalEngine.includes(name)) {
        setShowSettingActiveLocalEngineAtom(
          [...showSettingActiveLocalEngine].filter((x) => x !== name)
        )
      } else {
        setShowSettingActiveLocalEngineAtom([
          ...showSettingActiveLocalEngine,
          name,
        ])
      }
    },
    [showSettingActiveLocalEngine, setShowSettingActiveLocalEngineAtom]
  )
  return (
    <div className="flex w-full flex-col items-start justify-between border-b border-[hsla(var(--app-border))] py-3 sm:flex-row">
      <div className="w-full flex-shrink-0 space-y-1.5">
        <div className="flex items-center justify-between gap-x-2">
          <div>
            <div className="flex items-center gap-2">
              <h6 className="line-clamp-1 font-semibold">{engine}</h6>
              <Badge variant="outline" theme="secondary">
                {defaultEngineVariant?.version}
              </Badge>
            </div>
            <div className="mt-2 w-full font-medium leading-relaxed text-[hsla(var(--text-secondary))]">
              <p>{manualDescription(engine)}</p>
            </div>
          </div>

          <div className="flex items-center gap-x-3">
            <Switch
              checked={!showSettingActiveLocalEngine.includes(engine)}
              onChange={() => onSwitchChange(engine)}
            />
            <Button
              theme="icon"
              variant="outline"
              onClick={() => setSelectedSetting(engine)}
            >
              <SettingsIcon
                size={14}
                className="text-[hsla(var(--text-secondary))]"
              />
            </Button>
          </div>
        </div>
      </div>
    </div>
  )
}

const Engines = () => {
  const [searchText, setSearchText] = useState('')
  const { engines } = useGetEngines()
  const [engineActiveExtensions, setEngineActiveExtensions] = useState<
    EngineExtension[]
  >([])
  const [inActiveEngineProvider, setInActiveEngineProvider] = useAtom(
    inActiveEngineProviderAtom
  )

  useEffect(() => {
    const getAllSettings = async () => {
      const extensionsMenu = []
      const engineMenu = []
      const extensions = extensionManager.getAll()

      for (const extension of extensions) {
        const settings = await extension.getSettings()
        if (
          typeof extension.getSettings === 'function' &&
          'provider' in extension &&
          typeof extension.provider === 'string'
        ) {
          if (
            (settings && settings.length > 0) ||
            (await extension.installationState()) !== 'NotRequired'
          ) {
            engineMenu.push({
              ...extension,
              provider:
                'provider' in extension &&
                typeof extension.provider === 'string'
                  ? extension.provider
                  : '',
            })
          }
        } else {
          extensionsMenu.push({
            ...extension,
          })
        }
      }

      setEngineActiveExtensions(engineMenu as any)
    }
    getAllSettings()
  }, [])

  const onSwitchChange = useCallback(
    (name: string) => {
      if (inActiveEngineProvider.includes(name)) {
        setInActiveEngineProvider(
          [...inActiveEngineProvider].filter((x) => x !== name)
        )
      } else {
        setInActiveEngineProvider([...inActiveEngineProvider, name])
      }
    },
    [inActiveEngineProvider, setInActiveEngineProvider]
  )

  return (
    <ScrollArea className="h-full w-full">
      <div className="flex w-full flex-col items-start justify-between gap-y-2 p-4 sm:flex-row">
        <div className="w-full sm:w-[300px]">
          <Input
            prefixIcon={<SearchIcon size={16} />}
            placeholder="Search"
            value={searchText}
            onChange={(e) => setSearchText(e.target.value)}
            clearable={searchText.length > 0}
            onClear={() => setSearchText('')}
          />
        </div>
        {/* <div>
          <input type="file" hidden />
          <Button>Install Engine</Button>
        </div> */}
      </div>

      <div className="block w-full px-4">
        <div className="mb-3 mt-4 pb-4">
          <h6 className="text-xs text-[hsla(var(--text-secondary))]">
            Local Engine
          </h6>
          {engines &&
            Object.entries(engines)
              // eslint-disable-next-line @typescript-eslint/no-unused-vars
              .filter(([_, value]) => !(value as { type?: string }).type)
              .map(([key]) => {
                return <EngineItems engine={key as InferenceEngine} key={key} />
              })}
        </div>
      </div>

      {engineActiveExtensions.length !== 0 && (
        <div className="mt-4 block w-full px-4">
          <div className="mb-3 mt-4 pb-4">
            <h6 className="text-xs text-[hsla(var(--text-secondary))]">
              Remote Engine
            </h6>
            {engineActiveExtensions
              .filter((x) => x.name.includes(searchText.toLowerCase().trim()))
              .sort((a, b) => a.provider.localeCompare(b.provider))
              .map((item, i) => {
                return (
                  <div
                    key={i}
                    className="flex w-full flex-col items-start justify-between border-b border-[hsla(var(--app-border))] py-3 sm:flex-row"
                  >
                    <div className="w-full flex-shrink-0 space-y-1.5">
                      <div className="flex items-center justify-between gap-x-2">
                        <div className="flex items-center gap-x-2">
                          <h6 className="line-clamp-1 font-semibold">
                            {item.productName?.replace(
                              'Inference Engine',
                              ''
                            ) ?? formatExtensionsName(item.name)}
                          </h6>
                          <Badge variant="outline" theme="secondary">
                            v{item.version}
                          </Badge>
                          <p>{item.provider}</p>
                        </div>
                        <div className="flex items-center gap-x-2">
                          <Switch
                            checked={
                              !inActiveEngineProvider.includes(item.provider)
                            }
                            onChange={() => onSwitchChange(item.provider)}
                          />
                          {!inActiveEngineProvider.includes(item.provider) && (
                            <SetupRemoteModel engine={item.provider} />
                          )}
                        </div>
                      </div>
                      {
                        <div
                          className="w-full font-medium leading-relaxed text-[hsla(var(--text-secondary))] sm:w-4/5"
                          dangerouslySetInnerHTML={{
                            __html: marked.parse(item.description ?? '', {
                              async: false,
                            }),
                          }}
                        />
                      }
                    </div>
                  </div>
                )
              })}
          </div>
        </div>
      )}
    </ScrollArea>
  )
}

export default Engines