'use client'

// IdeaRowActions — Grill Me / Make Plan / Materialiseer / Archive / Open.
// Disabled-rules per M12 T-508:
//
//   Grill Me:     niet in GRILLING|PLANNING; vereist product-met-repo +
//                 connectedWorkers > 0
//   Make Plan:    alleen in GRILLED|PLAN_FAILED|PLAN_READY (re-plan); idem
//                 voorwaarden
//   Materialiseer: alleen in PLAN_READY (geen worker nodig — synchrone parser)
//   PLANNED:      alle drie disabled, "Bekijk PBI" link
//   *_FAILED:     "Probeer opnieuw" knop (= start-job opnieuw)
//
// Demo-tooltip om elke muteer-knop. connectedWorkers wordt gelezen uit
// useSoloStore (M12 grill-keuze 16 — geen lift voor v1).

import { useRef, useTransition } from 'react'
import { useRouter } from 'next/navigation'
import {
  Archive,
  ArrowRight,
  ExternalLink,
  Flame,
  Layers,
  RotateCw,
  Sparkles,
  Upload,
} from 'lucide-react'
import { toast } from 'sonner'

import { Button } from '@/components/ui/button'
import {
  Tooltip,
  TooltipContent,
  TooltipProvider,
  TooltipTrigger,
} from '@/components/ui/tooltip'
import { DemoTooltip } from '@/components/shared/demo-tooltip'
import { useSoloStore } from '@/stores/solo-store'
import { debugProps } from '@/lib/debug'
import {
  startGrillJobAction,
  startMakePlanJobAction,
  materializeIdeaPlanAction,
  uploadPlanMdAction,
} from '@/actions/ideas'
import type { IdeaDto } from '@/lib/idea-dto'

interface IdeaRowActionsProps {
  idea: IdeaDto
  isDemo: boolean
  onArchive: () => void
}

export function IdeaRowActions({ idea, isDemo, onArchive }: IdeaRowActionsProps) {
  const router = useRouter()
  const connectedWorkers = useSoloStore((s) => s.connectedWorkers)
  const [pending, startTransition] = useTransition()

  const hasProductWithRepo = idea.product != null && idea.product.repo_url !== null
  const workerOk = connectedWorkers > 0
  const status = idea.status

  // ---- Grill Me ----
  const grillBlockedReason = (() => {
    if (status === 'grilling' || status === 'planning') return 'Job loopt al'
    if (!hasProductWithRepo) return 'Idee heeft een product met repo nodig'
    if (!workerOk) return 'Geen Claude-worker actief'
    return null
  })()
  const grillEnabled = !grillBlockedReason && !isDemo && !pending

  // ---- Make Plan ----
  const makePlanAllowedStates = ['grilled', 'plan_failed', 'plan_ready']
  const makePlanBlockedReason = (() => {
    if (!makePlanAllowedStates.includes(status)) {
      if (status === 'draft' || status === 'grill_failed') return 'Eerst grillen'
      if (status === 'grilling' || status === 'planning') return 'Job loopt al'
      if (status === 'planned') return 'Idee is gepland — open de PBI'
      return null
    }
    if (!hasProductWithRepo) return 'Idee heeft een product met repo nodig'
    if (!workerOk) return 'Geen Claude-worker actief'
    return null
  })()
  const makePlanEnabled = !makePlanBlockedReason && !isDemo && !pending

  // ---- Materialiseer ----
  const materializeBlockedReason = (() => {
    if (status !== 'plan_ready') return 'Plan is niet klaar'
    return null
  })()
  const materializeEnabled = !materializeBlockedReason && !isDemo && !pending

  // ---- Upload plan ----
  // Synchrone server-action (parse + DB), geen worker nodig. Mag vanuit
  // DRAFT (skip-grill), GRILLED, PLAN_FAILED of PLAN_READY (overschrijft het
  // bestaande plan zonder confirmation — consistent met updatePlanMdAction).
  const uploadPlanAllowedStates = ['draft', 'grilled', 'plan_failed', 'plan_ready']
  const uploadPlanBlockedReason = (() => {
    if (uploadPlanAllowedStates.includes(status)) return null
    if (status === 'grilling' || status === 'planning') return 'Job loopt al'
    if (status === 'planned') return 'Idee is al gepland'
    return null
  })()
  const uploadPlanEnabled = !uploadPlanBlockedReason && !isDemo && !pending
  const fileInputRef = useRef<HTMLInputElement>(null)

  function handleUploadPlanClick() {
    fileInputRef.current?.click()
  }

  function handlePlanFileChange(e: React.ChangeEvent<HTMLInputElement>) {
    const file = e.target.files?.[0]
    // Reset zodat dezelfde file na een fout opnieuw gekozen kan worden.
    e.target.value = ''
    if (!file) return

    startTransition(async () => {
      let text: string
      try {
        text = await file.text()
      } catch {
        toast.error('Kon bestand niet lezen')
        return
      }
      const r = await uploadPlanMdAction(idea.id, text)
      if ('error' in r) {
        toast.error(r.error)
        return
      }
      toast.success('Plan geüpload — idee staat nu op PLAN_READY')
      router.refresh()
    })
  }

  // ---- Failed-states tonen "Probeer opnieuw" ----
  const isFailedState = status === 'grill_failed' || status === 'plan_failed'

  function runStart(action: typeof startGrillJobAction | typeof startMakePlanJobAction) {
    startTransition(async () => {
      const r = await action(idea.id)
      if ('error' in r) {
        toast.error(r.error)
        return
      }
      toast.success('Job in de wachtrij — een worker pakt hem op.')
      router.refresh()
    })
  }

  function handleMaterialize() {
    if (!confirm('Plan materialiseren? Dit maakt PBI + stories + taken aan.')) return
    startTransition(async () => {
      let r = await materializeIdeaPlanAction(idea.id)

      if ('error' in r && r.code === 409 && r.error.startsWith('PBI_HAS_ACTIVE_TASKS:')) {
        const pbiCode = r.error.split(':')[1]
        const alongside = confirm(
          `De bestaande PBI (${pbiCode}) heeft uitgevoerde taken.\n` +
          `OK = nieuwe PBI naast bestaande aanmaken.\n` +
          `Annuleren = stoppen.`
        )
        if (!alongside) return
        r = await materializeIdeaPlanAction(idea.id, { allowAlongside: true })
      }

      if ('error' in r) {
        toast.error(r.error)
        return
      }
      toast.success(`Gematerialiseerd als ${r.data?.pbi_code}`)
      if (idea.product_id) {
        router.push(`/products/${idea.product_id}`)
      } else {
        router.refresh()
      }
    })
  }

  return (
    <div className="flex items-center gap-1" {...debugProps('idea-row-actions', 'IdeaRowActions', 'components/ideas/idea-row-actions.tsx')}>
      {/* Bekijk PBI — alleen zichtbaar in PLANNED */}
      {status === 'planned' && idea.pbi && idea.product_id && (
        <Button
          variant="outline"
          size="sm"
          onClick={() => router.push(`/products/${idea.product_id!}`)}
        >
          Bekijk {idea.pbi.code}
          <ExternalLink className="ml-1 size-3.5" />
        </Button>
      )}

      {/* Grill Me */}
      <span data-debug-id="idea-row-actions__grill">
        <ActionButton
          label="Grill"
          icon={<Flame className="size-3.5" />}
          enabled={grillEnabled}
          blockedReason={grillBlockedReason}
          isDemo={isDemo}
          onClick={() => runStart(startGrillJobAction)}
        />
      </span>

      {/* Make Plan */}
      <span data-debug-id="idea-row-actions__plan">
        <ActionButton
          label="Plan"
          icon={<Sparkles className="size-3.5" />}
          enabled={makePlanEnabled}
          blockedReason={makePlanBlockedReason}
          isDemo={isDemo}
          onClick={() => runStart(startMakePlanJobAction)}
        />
      </span>

      {/* Upload plan — synchrone short-circuit van de Make-Plan AI-flow */}
      <span data-debug-id="idea-row-actions__upload-plan">
        <ActionButton
          label="Upload plan"
          icon={<Upload className="size-3.5" />}
          enabled={uploadPlanEnabled}
          blockedReason={uploadPlanBlockedReason}
          isDemo={isDemo}
          onClick={handleUploadPlanClick}
        />
        <input
          ref={fileInputRef}
          type="file"
          accept=".md,.markdown,text/markdown,text/plain"
          className="hidden"
          onChange={handlePlanFileChange}
          aria-label="Plan-markdown bestand kiezen"
        />
      </span>

      {/* Materialiseer */}
      <ActionButton
        label="Maak PBI"
        icon={<Layers className="size-3.5" />}
        enabled={materializeEnabled}
        blockedReason={materializeBlockedReason}
        isDemo={isDemo}
        onClick={handleMaterialize}
        variant="default"
      />

      {/* Failed-states: kleine retry-shortcut */}
      {isFailedState && (
        <DemoTooltip show={isDemo}>
          <Button
            size="sm"
            variant="outline"
            disabled={isDemo || pending || !workerOk || !hasProductWithRepo}
            onClick={() =>
              runStart(
                status === 'grill_failed' ? startGrillJobAction : startMakePlanJobAction,
              )
            }
            title="Probeer opnieuw"
          >
            <RotateCw className="size-3.5" />
          </Button>
        </DemoTooltip>
      )}

      {/* Open detail */}
      <Button
        size="sm"
        variant="ghost"
        onClick={() => router.push(`/ideas/${idea.id}`)}
        aria-label="Open idee"
        title="Open idee"
      >
        <ArrowRight className="size-4" />
      </Button>

      {/* Archive */}
      <DemoTooltip show={isDemo}>
        <Button
          size="sm"
          variant="ghost"
          onClick={onArchive}
          disabled={isDemo || pending}
          aria-label="Archiveer idee"
          title="Archiveer"
          data-debug-id="idea-row-actions__delete"
        >
          <Archive className="size-4" />
        </Button>
      </DemoTooltip>
    </div>
  )
}

interface ActionButtonProps {
  label: string
  icon: React.ReactNode
  enabled: boolean
  blockedReason: string | null
  isDemo: boolean
  onClick: () => void
  variant?: 'default' | 'outline'
}

function ActionButton({
  label,
  icon,
  enabled,
  blockedReason,
  isDemo,
  onClick,
  variant = 'outline',
}: ActionButtonProps) {
  // Bij demo: DemoTooltip toont reden. Bij niet-demo + reden: gewone tooltip.
  if (isDemo) {
    return (
      <DemoTooltip show>
        <Button size="sm" variant={variant} disabled>
          {icon}
          <span className="ml-1">{label}</span>
        </Button>
      </DemoTooltip>
    )
  }

  if (!enabled && blockedReason) {
    return (
      <TooltipProvider>
        <Tooltip>
          <TooltipTrigger render={<span className="inline-flex" />}>
            <Button size="sm" variant={variant} disabled>
              {icon}
              <span className="ml-1">{label}</span>
            </Button>
          </TooltipTrigger>
          <TooltipContent>{blockedReason}</TooltipContent>
        </Tooltip>
      </TooltipProvider>
    )
  }

  return (
    <Button size="sm" variant={variant} onClick={onClick}>
      {icon}
      <span className="ml-1">{label}</span>
    </Button>
  )
}