import { useCallback, useEffect, useState } from "react"
import { motion } from "framer-motion"
import { ArrowsClockwise, Gear, X } from "@phosphor-icons/react"
import type { AutomationTrigger, WorkflowPipelineRecord, WorkflowStatus } from "@shared/types"
import { ActionButton, Select } from "../ui"
import { ACCENT, LINE, triggerConfig, safeJsonStringify } from "./automation-config"

interface WorkflowFormState { name: string; description: string; triggerType: AutomationTrigger; triggerConfigJson: string; status: WorkflowStatus; stepsJson: string }
const defaultWorkflowForm: WorkflowFormState = { name: "", description: "", triggerType: "task_created", triggerConfigJson: "{}", status: "draft", stepsJson: "[]" }
function workflowToFormState(wf: WorkflowPipelineRecord): WorkflowFormState { return { name: wf.name, description: wf.description, triggerType: wf.triggerType, triggerConfigJson: safeJsonStringify(wf.triggerConfigJson), status: wf.status, stepsJson: safeJsonStringify(wf.stepsJson) } }

export function WorkflowFormModal({ open, editingWorkflow, companyId, onClose, onSaved }: { open: boolean; editingWorkflow: WorkflowPipelineRecord | null; companyId: string; onClose: () => void; onSaved: () => void }) {
  const isEditing = editingWorkflow !== null; const [form, setForm] = useState<WorkflowFormState>(defaultWorkflowForm); const [saving, setSaving] = useState(false); const [error, setError] = useState<string | null>(null)
  useEffect(() => { if (open) { setForm(editingWorkflow ? workflowToFormState(editingWorkflow) : defaultWorkflowForm); setError(null) } }, [open, editingWorkflow])
  const updateField = useCallback(<K extends keyof WorkflowFormState>(key: K, value: WorkflowFormState[K]) => { setForm((p) => ({ ...p, [key]: value })) }, [])
  const handleSave = useCallback(async () => {
    if (!form.name.trim()) { setError("Workflow name is required"); return }
    try { JSON.parse(form.triggerConfigJson) } catch { setError("Trigger config must be valid JSON"); return }
    try { JSON.parse(form.stepsJson) } catch { setError("Steps must be valid JSON array"); return }
    setSaving(true); setError(null)
    try { const result = await window.agentCompany.saveWorkflow({ id: editingWorkflow?.id ?? null, companyId, name: form.name.trim(), description: form.description.trim(), triggerType: form.triggerType, triggerConfigJson: form.triggerConfigJson, status: form.status, stepsJson: form.stepsJson }); if (!result.ok) { setError(result.error.message); return }; onSaved(); onClose() } catch (err) { setError(err instanceof Error ? err.message : "Failed to save workflow") } finally { setSaving(false) }
  }, [form, editingWorkflow, companyId, onSaved, onClose])
  if (!open) return null
  const triggerOptions = Object.entries(triggerConfig).map(([key, c]) => ({ value: key, label: c.label }))
  const statusOptions = [{ value: "draft", label: "Draft" }, { value: "active", label: "Active" }, { value: "paused", label: "Paused" }]
  return (
    <motion.div initial={{ opacity: 0 }} animate={{ opacity: 1 }} exit={{ opacity: 0 }} className="fixed inset-0 z-50 flex items-center justify-center bg-black/40 p-4" onClick={onClose}>
      <motion.div initial={{ scale: 0.95, opacity: 0 }} animate={{ scale: 1, opacity: 1 }} exit={{ scale: 0.95, opacity: 0 }} transition={{ duration: 0.2, ease: [0.16, 1, 0.3, 1] }} className="flex w-full max-w-[540px] flex-col rounded-[14px] border bg-[color:var(--panel)] shadow-xl" style={{ borderColor: LINE, maxHeight: "85vh" }} onClick={(e) => e.stopPropagation()}>
        <div className="flex shrink-0 items-center justify-between border-b px-6 py-4" style={{ borderColor: LINE }}><div className="flex items-center gap-3"><div className="flex h-8 w-8 items-center justify-center rounded-[8px]" style={{ backgroundColor: `${ACCENT}15`, color: ACCENT }}><ArrowsClockwise size={18} weight="fill" /></div><h2 className="text-[16px] font-bold text-[color:var(--text)]">{isEditing ? "Edit Workflow" : "New Workflow"}</h2></div><button type="button" onClick={onClose} className="rounded-[6px] p-1.5 text-[color:var(--muted)] transition hover:bg-[color:var(--panel-soft)] hover:text-[color:var(--text)]" aria-label="Close"><X size={16} /></button></div>
        <div className="overflow-y-auto px-6 py-5"><div className="space-y-5">
          {error ? <div className="rounded-[8px] bg-[color:var(--danger-soft)] px-3.5 py-2.5 text-[12px] font-medium text-[color:var(--danger)]">{error}</div> : null}
          <div><label className="mb-1.5 block text-[12px] font-medium text-[color:var(--muted-strong)]">Workflow Name</label><input type="text" value={form.name} onChange={(e) => updateField("name", e.target.value)} placeholder="e.g., Bug Fix Pipeline" className="focus-ring w-full rounded-[8px] border bg-[color:var(--panel)] px-3.5 py-2.5 text-[14px] text-[color:var(--text)] placeholder:text-[color:var(--muted)]" style={{ borderColor: LINE }} /></div>
          <div><label className="mb-1.5 block text-[12px] font-medium text-[color:var(--muted-strong)]">Description</label><textarea value={form.description} onChange={(e) => updateField("description", e.target.value)} placeholder="Describe this workflow pipeline" rows={2} className="focus-ring w-full rounded-[8px] border bg-[color:var(--panel)] px-3.5 py-2.5 text-[14px] text-[color:var(--text)] placeholder:text-[color:var(--muted)]" style={{ borderColor: LINE }} /></div>
          <div className="grid grid-cols-2 gap-3"><div><label className="mb-1.5 block text-[12px] font-medium text-[color:var(--muted-strong)]">Trigger</label><Select value={form.triggerType} onChange={(v) => updateField("triggerType", v as AutomationTrigger)} options={triggerOptions} /></div><div><label className="mb-1.5 block text-[12px] font-medium text-[color:var(--muted-strong)]">Status</label><Select value={form.status} onChange={(v) => updateField("status", v as WorkflowStatus)} options={statusOptions} /></div></div>
          <div><label className="mb-1.5 block text-[12px] font-medium text-[color:var(--muted-strong)]">Trigger Configuration (JSON)</label><textarea value={form.triggerConfigJson} onChange={(e) => updateField("triggerConfigJson", e.target.value)} rows={2} spellCheck={false} className="focus-ring w-full rounded-[8px] border bg-[color:var(--panel)] px-3.5 py-2.5 font-mono text-[12px] text-[color:var(--text)]" style={{ borderColor: LINE }} placeholder="{}" /></div>
          <div><label className="mb-1.5 block text-[12px] font-medium text-[color:var(--muted-strong)]">Pipeline Steps (JSON Array)</label><textarea value={form.stepsJson} onChange={(e) => updateField("stepsJson", e.target.value)} rows={6} spellCheck={false} className="focus-ring w-full rounded-[8px] border bg-[color:var(--panel)] px-3.5 py-2.5 font-mono text-[12px] text-[color:var(--text)]" style={{ borderColor: LINE }} placeholder='[{"id":"step-1","name":"Assign","action":"assign_task","configJson":"{}","assigneeDepartment":"engineering","assigneeAgentId":null,"requiresApproval":false,"timeoutSec":0,"status":"pending"}]' /></div>
        </div></div>
        <div className="flex shrink-0 justify-end gap-3 border-t px-6 py-4" style={{ borderColor: LINE }}>
          <button type="button" onClick={onClose} className="rounded-[8px] px-4 py-2 text-[12px] font-medium text-[color:var(--muted)] transition hover:bg-[color:var(--panel-soft)] hover:text-[color:var(--text)]">Cancel</button>
          <ActionButton label={isEditing ? "Save Changes" : "Create Workflow"} onClick={() => void handleSave()} icon={isEditing ? Gear : ArrowsClockwise} tone="accent" loading={saving} disabled={!form.name.trim()} />
        </div>
      </motion.div>
    </motion.div>
  )
}