import 'graphiql/style.css'
import 'graphiql/setup-workers/webpack'

import { useMonaco, type GraphiQLPlugin } from '@graphiql/react'
import { createGraphiQLFetcher, Fetcher } from '@graphiql/toolkit'
import { PermissionAction } from '@supabase/shared-types/out/constants'
import { useParams } from 'common'
import { GraphiQL, HISTORY_PLUGIN } from 'graphiql'
import { User as IconUser } from 'lucide-react'
import { useTheme } from 'next-themes'
import { useEffect, useMemo } from 'react'
import { toast } from 'sonner'
import { LogoLoader } from 'ui'

import styles from './graphiql.module.css'
import { getTheme } from '@/components/interfaces/App/MonacoThemeProvider'
import { RoleImpersonationSelector } from '@/components/interfaces/RoleImpersonationSelector'
import { useSessionAccessTokenQuery } from '@/data/auth/session-access-token-query'
import { useProjectPostgrestConfigQuery } from '@/data/config/project-postgrest-config-query'
import { useAsyncCheckPermissions } from '@/hooks/misc/useCheckPermissions'
import { API_URL, IS_PLATFORM } from '@/lib/constants'
import { getRoleImpersonationJWT } from '@/lib/role-impersonation'
import { useGetImpersonatedRoleState } from '@/state/role-impersonation-state'

const ROLE_IMPERSONATION_PLUGIN: GraphiQLPlugin = {
  title: 'Role Impersonation',
  icon: () => <IconUser />,
  content: () => <RoleImpersonationSelector orientation="vertical" />,
}

const MONACO_THEME = { dark: 'supabase-graphql-dark', light: 'supabase-graphql-light' }

const GraphiQLMonacoTheme = ({ resolvedTheme }: { resolvedTheme: 'dark' | 'light' }) => {
  const { monaco } = useMonaco()

  useEffect(() => {
    if (!monaco) return
    const dark = getTheme('dark')
    const light = getTheme('light')
    monaco.editor.defineTheme(MONACO_THEME.dark, {
      ...dark,
      rules: [...dark.rules, { token: 'argument.identifier.gql', foreground: '908aff' }],
    })
    monaco.editor.defineTheme(MONACO_THEME.light, {
      ...light,
      rules: [...light.rules, { token: 'argument.identifier.gql', foreground: '6c69ce' }],
      // Match the dashboard's bg-default in light mode so the editor doesn't read
      // as a darker square against the surrounding UI.
      colors: { ...light.colors, 'editor.background': '#fcfcfc' },
    })
    monaco.editor.setTheme(MONACO_THEME[resolvedTheme])
  }, [monaco, resolvedTheme])

  return null
}

export const GraphiQLTab = () => {
  const { resolvedTheme } = useTheme()
  const { ref: projectRef } = useParams()
  const currentTheme = resolvedTheme?.includes('dark') ? 'dark' : 'light'
  const { data: accessToken } = useSessionAccessTokenQuery({ enabled: IS_PLATFORM })

  const { data: config } = useProjectPostgrestConfigQuery({ projectRef })
  const jwtSecret = config?.jwt_secret

  const getImpersonatedRoleState = useGetImpersonatedRoleState()

  const { can: canReadJWTSecret } = useAsyncCheckPermissions(
    PermissionAction.READ,
    'field.jwt_secret'
  )

  const plugins = useMemo<GraphiQLPlugin[]>(
    () => (canReadJWTSecret ? [HISTORY_PLUGIN, ROLE_IMPERSONATION_PLUGIN] : [HISTORY_PLUGIN]),
    [canReadJWTSecret]
  )

  const fetcher = useMemo(() => {
    const fetcherFn = createGraphiQLFetcher({
      // [Joshen] Opting to hard code /platform for local to match the routes, so that it's clear what's happening
      url: `${API_URL}${IS_PLATFORM ? '' : '/platform'}/projects/${projectRef}/api/graphql`,
      fetch,
    })
    const customFetcher: Fetcher = async (graphqlParams, opts) => {
      let userAuthorization: string | undefined

      const role = getImpersonatedRoleState().role
      if (
        projectRef !== undefined &&
        jwtSecret !== undefined &&
        role !== undefined &&
        role.type === 'postgrest'
      ) {
        try {
          const token = await getRoleImpersonationJWT(projectRef, jwtSecret, role)
          userAuthorization = 'Bearer ' + token
        } catch (err: any) {
          toast.error(`Failed to get JWT for role: ${err.message}`)
        }
      }

      return fetcherFn(graphqlParams, {
        ...opts,
        headers: {
          ...opts?.headers,
          ...(accessToken && {
            Authorization: `Bearer ${accessToken}`,
          }),
          'x-graphql-authorization':
            opts?.headers?.['Authorization'] ??
            opts?.headers?.['authorization'] ??
            userAuthorization ??
            accessToken,
        },
      })
    }

    return customFetcher
  }, [projectRef, getImpersonatedRoleState, jwtSecret, accessToken])

  if (IS_PLATFORM && !accessToken) {
    return <LogoLoader />
  }

  return (
    <>
      <GraphiQLMonacoTheme resolvedTheme={currentTheme} />
      <GraphiQL
        fetcher={fetcher}
        forcedTheme={currentTheme}
        editorTheme={MONACO_THEME}
        className={styles.root}
        plugins={plugins}
      />
    </>
  )
}