// @ts-nocheck
import { Check, ChevronDown, Plus, PlusIcon } from 'lucide-react'
import Link from 'next/link'
import { useRouter } from 'next/router'
import { ReactNode, useEffect, useState } from 'react'
import { toast } from 'sonner'
import {
  Badge,
  Button,
  cn,
  Command,
  CommandEmpty,
  CommandGroup,
  CommandInput,
  CommandItem,
  CommandList,
  CommandSeparator,
  Popover,
  PopoverContent,
  PopoverTrigger,
} from 'ui'

import { OrganizationProjectSelector } from '@/components/ui/OrganizationProjectSelector'
import ShimmerLine from '@/components/ui/ShimmerLine'
import {
  IntegrationConnectionsCreateVariables,
  IntegrationProjectConnection,
} from '@/data/integrations/integrations.types'
import { useOrgProjectsInfiniteQuery } from '@/data/projects/org-projects-infinite-query'
import { useProjectDetailQuery } from '@/data/projects/project-detail-query'
import { useIsFeatureEnabled } from '@/hooks/misc/useIsFeatureEnabled'
import { useSelectedOrganizationQuery } from '@/hooks/misc/useSelectedOrganization'
import { BASE_PATH } from '@/lib/constants'
import { openInstallGitHubIntegrationWindow } from '@/lib/github'
import { EMPTY_ARR } from '@/lib/void'

export interface Project {
  name: string
  ref: string
}

export interface ForeignProject {
  id: string
  name: string
  installation_id?: number
}

export interface ProjectLinkerProps {
  slug?: string
  organizationIntegrationId?: string
  foreignProjects: ForeignProject[]
  onCreateConnections: (variables: IntegrationConnectionsCreateVariables) => void
  installedConnections?: IntegrationProjectConnection[]
  isLoading?: boolean
  integrationIcon: ReactNode
  getForeignProjectIcon?: (project: ForeignProject) => ReactNode
  choosePrompt?: string
  onSkip?: () => void
  loadingForeignProjects?: boolean
  showNoEntitiesState?: boolean

  defaultBrivenProjectRef?: string
  defaultForeignProjectId?: string
  mode: 'Vercel' | 'GitHub'
}

const ProjectLinker = ({
  slug,
  organizationIntegrationId,
  foreignProjects,
  onCreateConnections: _onCreateConnections,
  installedConnections = EMPTY_ARR,
  isLoading,
  integrationIcon,
  getForeignProjectIcon,
  choosePrompt = 'Choose a project',
  onSkip,
  loadingForeignProjects,
  showNoEntitiesState = true,

  defaultBrivenProjectRef,
  defaultForeignProjectId,
  mode,
}: ProjectLinkerProps) => {
  const router = useRouter()
  const projectCreationEnabled = useIsFeatureEnabled('projects:create')

  const [openProjectsDropdown, setOpenProjectsDropdown] = useState(false)
  const [openForeignProjectsComboBox, setOpenForeignProjectsComboBox] = useState(false)
  const [foreignProjectId, setForeignProjectId] = useState<string | undefined>(
    defaultForeignProjectId
  )
  const [brivenProjectRef, setBrivenProjectRef] = useState<string | undefined>(
    defaultBrivenProjectRef
  )

  const { data: selectedOrganization } = useSelectedOrganizationQuery()
  const { data: orgProjects, isPending: loadingBrivenProjects } = useOrgProjectsInfiniteQuery({
    slug,
  })
  const numProjects = orgProjects?.pages[0].pagination.count ?? 0

  useEffect(() => {
    if (defaultBrivenProjectRef !== undefined && brivenProjectRef === undefined)
      setBrivenProjectRef(defaultBrivenProjectRef)
  }, [defaultBrivenProjectRef, brivenProjectRef])

  useEffect(() => {
    if (defaultForeignProjectId !== undefined && foreignProjectId === undefined)
      setForeignProjectId(defaultForeignProjectId)
  }, [defaultForeignProjectId, foreignProjectId])

  // create a flat array of foreign project ids. ie, ["prj_MlkO6AiLG5ofS9ojKrkS3PhhlY3f", ..]
  const flatInstalledConnectionsIds = new Set(installedConnections.map((x) => x.foreign_project_id))

  const { data: selectedBrivenProject } = useProjectDetailQuery({ ref: brivenProjectRef })

  const selectedForeignProject = foreignProjectId
    ? foreignProjects.find((x) => x.id?.toLowerCase() === foreignProjectId?.toLowerCase())
    : undefined

  function onCreateConnections() {
    const projectDetails = selectedForeignProject

    if (!selectedForeignProject?.id) return console.error('No Foreign project ID set')
    if (!selectedBrivenProject?.ref) return console.error('No Briven project ref set')

    const alreadyInstalled = flatInstalledConnectionsIds.has(foreignProjectId ?? '')
    if (alreadyInstalled) {
      return toast.error(
        `Unable to connect to ${selectedForeignProject.name}: Selected repository already has an installed connection to a project`
      )
    }

    _onCreateConnections({
      organizationIntegrationId: organizationIntegrationId!,
      connection: {
        foreign_project_id: selectedForeignProject?.id,
        briven_project_ref: selectedBrivenProject?.ref,
        integration_id: '0',
        metadata: {
          ...projectDetails,
        },
      },
      orgSlug: selectedOrganization?.slug,
      new: {
        installation_id: selectedForeignProject.installation_id!,
        project_ref: selectedBrivenProject.ref,
        repository_id: Number(selectedForeignProject.id),
      },
    })
  }

  const Panel = ({ children, className, ...props }: React.HTMLAttributes<HTMLDivElement>) => {
    return (
      <div
        className={cn(
          'flex-1 min-w-0 flex flex-col grow gap-6 px-5 mx-auto w-full justify-center items-center',
          className
        )}
        {...props}
      >
        {children}
      </div>
    )
  }

  const noBrivenProjects = numProjects === 0
  const noForeignProjects = foreignProjects.length === 0
  const missingEntity = noBrivenProjects ? 'Briven' : mode
  const oppositeMissingEntity = noBrivenProjects ? mode : 'Briven'

  return (
    <div className="flex flex-col bg border shadow-sm rounded-lg overflow-hidden">
      <div className="relative p-12 border-b border-muted">
        <div
          className="absolute inset-0 bg-grid-black/5 mask-[linear-gradient(0deg,#fff,rgba(255,255,255,0.6))] dark:bg-grid-white/5 dark:mask-[linear-gradient(0deg,rgba(255,255,255,0.1),rgba(255,255,255,0.5))]"
          style={{ backgroundPosition: '10px 10px' }}
        />

        {loadingForeignProjects ? (
          <div className="w-1/2 mx-auto space-y-2 py-4">
            <p className="text-sm text-foreground text-center">Loading projects</p>
            <ShimmerLine active />
          </div>
        ) : showNoEntitiesState && (noBrivenProjects || noForeignProjects) ? (
          <div className="text-center">
            <h5 className="text-foreground">No {missingEntity} Projects found</h5>
            <p className="text-foreground-light text-sm">
              You will need to create a {missingEntity} Project to link to a {oppositeMissingEntity}{' '}
              Project.
              <br />
              You can skip this and create a Project Connection later.
            </p>
          </div>
        ) : (
          <div className="flex justify-center gap-0 w-full relative">
            <Panel>
              <div className="bg-white shadow-sm border rounded-sm p-1 w-12 h-12 flex justify-center items-center">
                <img src={`${BASE_PATH}/img/briven-logo.svg`} alt="Briven" className="w-6" />
              </div>

              <OrganizationProjectSelector
                sameWidthAsTrigger
                open={openProjectsDropdown}
                setOpen={setOpenProjectsDropdown}
                slug={slug}
                selectedRef={brivenProjectRef}
                onSelect={(project) => {
                  setBrivenProjectRef(project.ref)
                  setOpenProjectsDropdown(false)
                }}
                renderRow={(project) => {
                  return (
                    <div className={cn('w-full flex items-center justify-between')}>
                      <div className="flex items-center gap-x-2">
                        <div className="bg-white shadow-sm border rounded-sm p-1 w-6 h-6 flex justify-center items-center">
                          <img
                            src={`${BASE_PATH}/img/briven-logo.svg`}
                            alt="Briven"
                            className="w-4"
                          />
                        </div>
                        <p>{project.name}</p>
                        {project.status === 'INACTIVE' && <Badge>Paused</Badge>}
                        {project.status === 'GOING_DOWN' && <Badge>Pausing</Badge>}
                      </div>
                      {project.ref === brivenProjectRef && <Check size={16} />}
                    </div>
                  )
                }}
                renderTrigger={() => {
                  return (
                    <Button
                      type="default"
                      block
                      disabled={defaultBrivenProjectRef !== undefined || loadingBrivenProjects}
                      loading={loadingBrivenProjects}
                      className="justify-between h-[34px]"
                      iconRight={
                        defaultBrivenProjectRef === undefined ? (
                          <span className="grow flex justify-end">
                            <ChevronDown />
                          </span>
                        ) : null
                      }
                    >
                      <div className="flex items-center gap-x-2">
                        <div className="bg-white shadow-sm border rounded-sm p-1 w-6 h-6 flex justify-center items-center">
                          <img
                            src={`${BASE_PATH}/img/briven-logo.svg`}
                            alt="Briven"
                            className="w-4"
                          />
                        </div>
                        {selectedBrivenProject
                          ? selectedBrivenProject.name
                          : 'Choose Briven Project'}
                      </div>
                    </Button>
                  )
                }}
                renderActions={() => {
                  return (
                    projectCreationEnabled && (
                      <CommandGroup>
                        <CommandItem
                          className="cursor-pointer w-full"
                          onSelect={() => {
                            setOpenProjectsDropdown(false)
                            router.push(`/new/${selectedOrganization?.slug}`)
                          }}
                          onClick={() => setOpenProjectsDropdown(false)}
                        >
                          <Link
                            href={`/new/${selectedOrganization?.slug}`}
                            onClick={() => {
                              setOpenProjectsDropdown(false)
                            }}
                            className="w-full flex items-center gap-2"
                          >
                            <Plus size={14} strokeWidth={1.5} />
                            <p>Create a new project</p>
                          </Link>
                        </CommandItem>
                      </CommandGroup>
                    )
                  )
                }}
              />
            </Panel>

            <div className="border border-foreground-lighter h-px w-8 border-dashed self-end mb-4" />

            <Panel>
              <div className="bg-black shadow-sm rounded-sm p-1 w-12 h-12 flex justify-center items-center">
                {integrationIcon}
              </div>

              <Popover
                open={openForeignProjectsComboBox}
                onOpenChange={setOpenForeignProjectsComboBox}
              >
                <PopoverTrigger asChild>
                  <Button
                    type="default"
                    block
                    disabled={loadingForeignProjects}
                    loading={loadingForeignProjects}
                    className="justify-start h-[34px]"
                    icon={
                      <div>
                        {selectedForeignProject
                          ? (getForeignProjectIcon?.(selectedForeignProject) ?? integrationIcon)
                          : integrationIcon}
                      </div>
                    }
                    iconRight={
                      <span className="grow flex justify-end">
                        <ChevronDown />
                      </span>
                    }
                  >
                    {(selectedForeignProject && selectedForeignProject.name) ?? choosePrompt}
                  </Button>
                </PopoverTrigger>
                <PopoverContent className="p-0" side="bottom" align="center" sameWidthAsTrigger>
                  <Command>
                    <CommandInput placeholder="Search for a project" />
                    <CommandList className="max-h-[170px]!">
                      <CommandEmpty>No results found.</CommandEmpty>
                      <CommandGroup>
                        {foreignProjects.map((project, i) => {
                          return (
                            <CommandItem
                              key={project.id}
                              value={`${project.name.replaceAll('"', '')}-${i}`}
                              className="flex gap-2 items-center"
                              onSelect={() => {
                                if (project.id) setForeignProjectId(project.id)
                                setOpenForeignProjectsComboBox(false)
                              }}
                            >
                              <div>{getForeignProjectIcon?.(project) ?? integrationIcon}</div>
                              <span className="truncate" title={project.name}>
                                {project.name}
                              </span>
                            </CommandItem>
                          )
                        })}
                        {foreignProjects.length === 0 && (
                          <CommandEmpty>No results found.</CommandEmpty>
                        )}
                      </CommandGroup>
                      {mode === 'GitHub' && (
                        <>
                          <CommandSeparator />
                          <CommandGroup>
                            <CommandItem
                              className="flex gap-2 items-center cursor-pointer"
                              onSelect={() => openInstallGitHubIntegrationWindow('install')}
                            >
                              <PlusIcon size={16} />
                              Add GitHub Repositories
                            </CommandItem>
                          </CommandGroup>
                        </>
                      )}
                    </CommandList>
                  </Command>
                </PopoverContent>
              </Popover>
            </Panel>
          </div>
        )}
      </div>

      <div className="flex w-full justify-end gap-2 p-4 bg-surface-75">
        {onSkip !== undefined && (
          <Button
            size="medium"
            type="default"
            onClick={() => {
              onSkip()
            }}
          >
            Skip
          </Button>
        )}
        <Button
          size="medium"
          className="self-end"
          onClick={onCreateConnections}
          loading={isLoading}
          disabled={
            // data loading states
            loadingForeignProjects ||
            loadingBrivenProjects ||
            isLoading ||
            // check whether both project types are not undefined
            !selectedBrivenProject ||
            !selectedForeignProject
          }
        >
          Connect project
        </Button>
      </div>
    </div>
  )
}

export default ProjectLinker