'use client'

import { useMemo, useState } from 'react'
import { Button } from '@/components/ui/button'
import { Input } from '@/components/ui/input'
import { Label } from '@/components/ui/label'
import { Play } from 'lucide-react'
import { useSimulateMailRule } from '@/lib/api/hooks/use-mail-automation-queries'
import type { RuleEditorState, RuleSimulationResult } from '@/lib/mail-automation/types'
import {
  DEFAULT_SIMULATION_CALENDAR_EVENT,
  DEFAULT_SIMULATION_CONTACT,
  DEFAULT_SIMULATION_DRIVE_FILE,
  DEFAULT_SIMULATION_MESSAGE,
  workflowToApiPayload,
} from '@/lib/mail-automation/defaults'
import { inferDomainsFromTriggers } from '@/lib/mail-automation/domains'
import { AUTOMATION_DOMAIN_LABELS } from '@/lib/mail-automation/domains'

interface RuleSimulatorPanelProps {
  state: RuleEditorState
  ruleId?: string
}

export function RuleSimulatorPanel({ state, ruleId }: RuleSimulatorPanelProps) {
  const simulate = useSimulateMailRule()
  const [message, setMessage] = useState(DEFAULT_SIMULATION_MESSAGE)
  const [driveFile, setDriveFile] = useState(DEFAULT_SIMULATION_DRIVE_FILE)
  const [contact, setContact] = useState(DEFAULT_SIMULATION_CONTACT)
  const [calendarEvent, setCalendarEvent] = useState(DEFAULT_SIMULATION_CALENDAR_EVENT)
  const [result, setResult] = useState<RuleSimulationResult | null>(null)

  const domains = useMemo(
    () => inferDomainsFromTriggers(state.workflow.triggers),
    [state.workflow.triggers]
  )

  async function runSimulation() {
    const payload = workflowToApiPayload(state)
    const res = await simulate.mutateAsync({
      message,
      ...(ruleId
        ? { rule_id: ruleId }
        : {
            rule: {
              conditions: payload.conditions,
              actions: payload.actions,
              workflow: payload.workflow,
            },
          }),
    })
    setResult(res)
  }

  return (
    <div className="space-y-3 rounded-lg border border-border bg-muted/10 p-3">
      <p className="text-xs font-medium">
        Tester avec un événement exemple
        {domains.length > 0 ? (
          <span className="ml-1 font-normal text-muted-foreground">
            ({domains.map((d) => AUTOMATION_DOMAIN_LABELS[d]).join(', ')})
          </span>
        ) : null}
      </p>

      {domains.includes('mail') ? (
        <div className="space-y-2 rounded-md border border-border/50 p-2">
          <p className="text-[10px] font-medium uppercase tracking-wide text-muted-foreground">Mail</p>
          <div className="grid gap-2 sm:grid-cols-2">
            <div>
              <Label className="text-[10px]">De</Label>
              <Input className="h-8 text-xs" value={message.from} onChange={(e) => setMessage({ ...message, from: e.target.value })} />
            </div>
            <div>
              <Label className="text-[10px]">Sujet</Label>
              <Input className="h-8 text-xs" value={message.subject} onChange={(e) => setMessage({ ...message, subject: e.target.value })} />
            </div>
          </div>
          <div>
            <Label className="text-[10px]">Corps</Label>
            <textarea
              className="mt-1 min-h-16 w-full rounded-md border border-input bg-background px-2 py-1.5 text-xs"
              value={message.body_text}
              onChange={(e) => setMessage({ ...message, body_text: e.target.value })}
            />
          </div>
        </div>
      ) : null}

      {domains.includes('drive') ? (
        <div className="space-y-2 rounded-md border border-border/50 p-2">
          <p className="text-[10px] font-medium uppercase tracking-wide text-muted-foreground">Drive</p>
          <div className="grid gap-2 sm:grid-cols-2">
            <div>
              <Label className="text-[10px]">Nom fichier</Label>
              <Input className="h-8 text-xs" value={driveFile.file_name} onChange={(e) => setDriveFile({ ...driveFile, file_name: e.target.value })} />
            </div>
            <div>
              <Label className="text-[10px]">Chemin</Label>
              <Input className="h-8 text-xs" value={driveFile.file_path} onChange={(e) => setDriveFile({ ...driveFile, file_path: e.target.value })} />
            </div>
            <div>
              <Label className="text-[10px]">Type MIME</Label>
              <Input className="h-8 text-xs" value={driveFile.mime_type} onChange={(e) => setDriveFile({ ...driveFile, mime_type: e.target.value })} />
            </div>
            <div>
              <Label className="text-[10px]">Taille (octets)</Label>
              <Input type="number" className="h-8 text-xs" value={driveFile.file_size} onChange={(e) => setDriveFile({ ...driveFile, file_size: Number(e.target.value) || 0 })} />
            </div>
          </div>
        </div>
      ) : null}

      {domains.includes('contacts') ? (
        <div className="space-y-2 rounded-md border border-border/50 p-2">
          <p className="text-[10px] font-medium uppercase tracking-wide text-muted-foreground">Contacts</p>
          <div className="grid gap-2 sm:grid-cols-2">
            <div>
              <Label className="text-[10px]">Nom</Label>
              <Input className="h-8 text-xs" value={contact.name} onChange={(e) => setContact({ ...contact, name: e.target.value })} />
            </div>
            <div>
              <Label className="text-[10px]">E-mail</Label>
              <Input className="h-8 text-xs" value={contact.email} onChange={(e) => setContact({ ...contact, email: e.target.value })} />
            </div>
            <div>
              <Label className="text-[10px]">Téléphone</Label>
              <Input className="h-8 text-xs" value={contact.phone} onChange={(e) => setContact({ ...contact, phone: e.target.value })} />
            </div>
            <div>
              <Label className="text-[10px]">Organisation</Label>
              <Input className="h-8 text-xs" value={contact.org} onChange={(e) => setContact({ ...contact, org: e.target.value })} />
            </div>
          </div>
        </div>
      ) : null}

      {domains.includes('agenda') ? (
        <div className="space-y-2 rounded-md border border-border/50 p-2">
          <p className="text-[10px] font-medium uppercase tracking-wide text-muted-foreground">
            {AUTOMATION_DOMAIN_LABELS.agenda}
          </p>
          <div className="grid gap-2 sm:grid-cols-2">
            <div>
              <Label className="text-[10px]">Titre</Label>
              <Input className="h-8 text-xs" value={calendarEvent.title} onChange={(e) => setCalendarEvent({ ...calendarEvent, title: e.target.value })} />
            </div>
            <div>
              <Label className="text-[10px]">Lieu</Label>
              <Input className="h-8 text-xs" value={calendarEvent.location} onChange={(e) => setCalendarEvent({ ...calendarEvent, location: e.target.value })} />
            </div>
            <div>
              <Label className="text-[10px]">Organisateur</Label>
              <Input className="h-8 text-xs" value={calendarEvent.organizer} onChange={(e) => setCalendarEvent({ ...calendarEvent, organizer: e.target.value })} />
            </div>
            <div>
              <Label className="text-[10px]">Participant</Label>
              <Input className="h-8 text-xs" value={calendarEvent.attendee} onChange={(e) => setCalendarEvent({ ...calendarEvent, attendee: e.target.value })} />
            </div>
            <div>
              <Label className="text-[10px]">Calendrier</Label>
              <Input className="h-8 text-xs" value={calendarEvent.calendar_id} onChange={(e) => setCalendarEvent({ ...calendarEvent, calendar_id: e.target.value })} />
            </div>
          </div>
        </div>
      ) : null}

      {domains.includes('drive') || domains.includes('contacts') || domains.includes('agenda') ? (
        <p className="text-[10px] text-muted-foreground italic">
          La simulation API reste orientée mail ; l&apos;exécution réelle Drive, contacts et agenda est active
          côté serveur à la réception des événements.
        </p>
      ) : null}

      <Button type="button" size="sm" disabled={simulate.isPending} onClick={runSimulation}>
        <Play className="mr-1 size-3.5" />
        Simuler
      </Button>

      {result ? (
        <div className="space-y-2 rounded-md border border-border/60 bg-background p-2 text-xs">
          <p>
            Correspondance :{' '}
            <span className={result.matched ? 'text-emerald-600' : 'text-muted-foreground'}>
              {result.matched ? 'oui' : 'non'}
            </span>
          </p>
          {result.steps?.length ? (
            <div>
              <p className="font-medium">Parcours</p>
              <ol className="mt-1 list-decimal pl-4 text-muted-foreground">
                {result.steps.map((s, i) => (
                  <li key={i}>
                    {s.node_type}
                    {s.handle ? ` → ${s.handle}` : ''}
                  </li>
                ))}
              </ol>
            </div>
          ) : null}
          {result.actions?.length ? (
            <div>
              <p className="font-medium">Actions</p>
              <ul className="mt-1 space-y-0.5 text-muted-foreground">
                {result.actions.map((a, i) => (
                  <li key={i}>
                    {a.type}
                    {a.value ? `: ${a.value}` : ''} {a.ok ? '✓' : `✗ ${a.error ?? ''}`}
                  </li>
                ))}
              </ul>
            </div>
          ) : null}
        </div>
      ) : null}
    </div>
  )
}
