// 审批流程配置 — 参考 OpsxSQL WorkflowPage 工作流模式
import { useState, useEffect, useCallback, useRef } from 'react';
import { useTranslation } from 'react-i18next';
import {
  Plus, Edit2, Trash2, X, ChevronDown, ChevronUp, ArrowUp, ArrowDown,
  Play, Loader2, Star, CheckCircle, GitBranch, Users, Shield,
} from 'lucide-react';
import { Card, CardContent } from '@/components/ui/card';
import { Button } from '@/components/ui/button';
import {
  Dialog, DialogContent, DialogDescription, DialogFooter, DialogHeader, DialogTitle,
} from '@/components/ui/dialog';
import { toast } from 'sonner';
import { approvalWorkflowApi, userApi } from '@/api';
import { useConfirm } from '@/components/ui/confirm-dialog';
import { PageShell } from '@/components/layout/PageShell';
import { PageEmpty } from '@/components/layout/PageEmpty';
import type { JsonData } from '@/types/common';

/* ------------------------------------------------------------------ */
/*  Types                                                               */
/* ------------------------------------------------------------------ */

interface WorkflowStep {
  id?: number;
  workflow_id?: number;
  step_number: number;
  name: string;
  step_type: string;
  approver_ids: string | null;
  is_required: boolean;
  timeout_hours: number;
  auto_approve_on_timeout: boolean;
}

interface WorkflowItem {
  id: number;
  name: string;
  description: string | null;
  category: string;
  is_default: boolean;
  is_active: boolean;
  created_at: string;
  steps: WorkflowStep[];
}

interface UserItem {
  id: number;
  username: string;
  display_name: string | null;
  role: string;
  is_active?: boolean;
}

interface StepDraft {
  name: string;
  step_type: 'submit' | 'audit' | 'execute';
  approver_ids: number[];
}

const STEP_TYPE_COLORS: Record<string, string> = {
  submit: 'bg-blue-500/15 dg-text-blue border-blue-500/30',
  audit: 'bg-purple-500/15 dg-text-purple border-purple-500/30',
  execute: 'bg-green-500/15 dg-text-green border-green-500/30',
};

const STEP_TYPE_ICONS: Record<string, React.ElementType> = {
  submit: Users,
  audit: Shield,
  execute: Play,
};

/** 解析审批人 ID 列表 // Logan.Li */
function parseApproverIds(ids: string | null): number[] {
  if (!ids) return [];
  try {
    const p = JSON.parse(ids);
    return Array.isArray(p) ? p : [];
  } catch { return []; }
}

/** 查找 admin 用户 ID，用于新建流程默认审批/执行人 // Logan.Li */
function resolveAdminId(users: UserItem[]): number[] {
  const admin = users.find((u) => u.username === 'admin');
  return admin ? [admin.id] : [];
}

/** 新建流程默认步骤：提交 → admin 审批 → admin 执行 // Logan.Li */
function buildDefaultSteps(users: UserItem[], t: (key: string) => string): StepDraft[] {
  const adminIds = resolveAdminId(users);
  return [
    { name: t('approval.detail.submitNode'), step_type: 'submit', approver_ids: [] },
    { name: t('approval.step.auditShort'), step_type: 'audit', approver_ids: adminIds },
    { name: t('approval.step.executeShort'), step_type: 'execute', approver_ids: adminIds },
  ];
}

/* ------------------------------------------------------------------ */
/*  UserSelectInline                                                    */
/* ------------------------------------------------------------------ */

function UserSelectInline({
  users, selectedIds, label, onToggle, onToggleAll, onClear, getUserName,
}: {
  users: UserItem[];
  selectedIds: number[];
  label: string;
  onToggle: (uid: number) => void;
  onToggleAll: () => void;
  onClear: () => void;
  getUserName: (uid: number) => string;
}) {
  const { t } = useTranslation();
  const [open, setOpen] = useState(false);
  const triggerRef = useRef<HTMLButtonElement>(null);
  const [pos, setPos] = useState({ top: 0, left: 0, width: 0 });

  const updatePos = () => {
    if (triggerRef.current) {
      const rect = triggerRef.current.getBoundingClientRect();
      setPos({ top: rect.bottom + 4, left: rect.left, width: rect.width });
    }
  };

  return (
    <div className="relative">
      <button
        ref={triggerRef}
        type="button"
        onClick={() => { if (!open) updatePos(); setOpen(!open); }}
        className={`w-full flex items-center justify-between px-3 py-2 rounded-lg text-sm transition-colors ${
          selectedIds.length === 0
            ? 'bg-[var(--dg-bg-tertiary)] border border-red-500/40 text-[var(--dg-text-muted)]'
            : 'bg-[var(--dg-bg-tertiary)] border border-[var(--dg-border)] text-[var(--dg-text-primary)]'
        }`}
      >
        <span className="truncate">
          {selectedIds.length === 0 ? `${label} * ${t('approval.editor.pleaseSelect')}` : `${label} (${t('approval.editor.people', { count: selectedIds.length })})`}
        </span>
        <ChevronDown className={`w-4 h-4 text-[var(--dg-text-muted)] transition-transform ${open ? 'rotate-180' : ''}`} />
      </button>

      {selectedIds.length > 1 && (
        <div className="flex flex-wrap gap-1 mt-1.5">
          {selectedIds.map((uid) => (
            <span key={uid} className="inline-flex items-center gap-1 px-1.5 py-0.5 rounded text-[11px] bg-blue-500/15 dg-text-blue">
              {getUserName(uid)}
              <button onClick={() => onToggle(uid)} className="hover:dg-text-red"><X className="w-3 h-3" /></button>
            </span>
          ))}
        </div>
      )}

      {open && (
        <>
          <div className="fixed inset-0 z-40" onClick={() => setOpen(false)} />
          <div className="fixed z-50 bg-[var(--dg-bg-secondary)] border border-[var(--dg-border)] rounded-lg shadow-xl max-h-52 overflow-y-auto"
            style={{ top: pos.top, left: pos.left, width: pos.width }}>
            <div className="flex items-center justify-between px-3 py-2 border-b border-[var(--dg-border)]">
              <button onClick={onToggleAll} className="text-[11px] dg-text-blue hover:text-blue-300">
                {selectedIds.length === users.length && users.length > 0 ? t('approval.editor.deselectAll') : t('approval.editor.selectAll')}
              </button>
              {selectedIds.length > 0 && (
                <button onClick={onClear} className="text-[11px] dg-text-red hover:dg-text-red">{t('common.clear')}</button>
              )}
            </div>
            {users.map((u) => {
              const checked = selectedIds.includes(u.id);
              return (
                <div key={u.id} onClick={() => onToggle(u.id)}
                  className="flex items-center gap-2.5 px-3 py-2 cursor-pointer hover:bg-[var(--dg-bg-hover)] transition-colors">
                  <div className={`w-4 h-4 rounded border flex items-center justify-center flex-shrink-0 ${
                    checked ? 'bg-blue-500 border-blue-500' : 'border-[var(--dg-border)]'
                  }`}>
                    {checked && <CheckCircle className="w-3 h-3 text-white" />}
                  </div>
                  <span className={`text-sm flex-1 ${checked ? 'text-[var(--dg-text-primary)]' : 'text-[var(--dg-text-secondary)]'}`}>
                    {u.display_name || u.username}
                  </span>
                  <span className="text-[10px] text-[var(--dg-text-muted)] px-1.5 py-0.5 rounded bg-[var(--dg-bg-tertiary)]">
                    {u.role}
                  </span>
                </div>
              );
            })}
          </div>
        </>
      )}
    </div>
  );
}

/* ------------------------------------------------------------------ */
/*  WorkflowEditorModal                                                  */
/* ------------------------------------------------------------------ */

interface EditorProps {
  workflow?: WorkflowItem | null;
  users: UserItem[];
  onClose: () => void;
  onSaved: () => void;
}

function WorkflowEditorModal({ workflow, users, onClose, onSaved }: EditorProps) {
  const { t } = useTranslation();
  const isEdit = !!workflow;
  const [name, setName] = useState(workflow?.name || '');
  const [description, setDescription] = useState(workflow?.description || '');
  const [category, setCategory] = useState(workflow?.category || 'resource');
  const [steps, setSteps] = useState<StepDraft[]>([]);
  const [submitting, setSubmitting] = useState(false);
  const [error, setError] = useState('');

  const stepTypeLabels: Record<string, string> = {
    submit: t('approval.step.submit'),
    audit: t('approval.step.audit'),
    execute: t('approval.step.execute'),
  };

  const stepTypes = [
    { value: 'submit' as const, label: t('approval.step.submit') },
    { value: 'audit' as const, label: t('approval.step.audit') },
    { value: 'execute' as const, label: t('approval.step.execute') },
  ];

  useEffect(() => {
    if (workflow?.steps?.length) {
      setSteps(
        workflow.steps.map((s) => ({
          name: s.name,
          step_type: (s.step_type === 'serial' || s.step_type === 'parallel')
            ? ('audit' as const)
            : (s.step_type as 'submit' | 'audit' | 'execute'),
          approver_ids: parseApproverIds(s.approver_ids),
        }))
      );
    } else {
      setSteps(buildDefaultSteps(users, t));
    }
  }, [workflow, users, t]);

  const addStep = (type: 'submit' | 'audit' | 'execute') => {
    const labels: Record<string, string> = {
      submit: t('approval.step.submitShort'),
      audit: t('approval.step.auditShort'),
      execute: t('approval.step.executeShort'),
    };
    const count = steps.filter((s) => s.step_type === type).length;
    const suffix = count > 0 ? ` ${count + 1}` : '';
    setSteps([...steps, { name: `${labels[type]}${suffix}`, step_type: type, approver_ids: [] }]);
  };

  const removeStep = (idx: number) => setSteps(steps.filter((_, i) => i !== idx));
  const moveStep = (idx: number, dir: -1 | 1) => {
    const target = idx + dir;
    if (target < 0 || target >= steps.length) return;
    const next = [...steps];
    [next[idx], next[target]] = [next[target], next[idx]];
    setSteps(next);
  };
  const updateStep = (idx: number, patch: Partial<StepDraft>) => {
    setSteps(steps.map((s, i) => (i === idx ? { ...s, ...patch } : s)));
  };
  const toggleUser = (idx: number, uid: number) => {
    const step = steps[idx];
    const has = step.approver_ids.includes(uid);
    updateStep(idx, { approver_ids: has ? step.approver_ids.filter((id) => id !== uid) : [...step.approver_ids, uid] });
  };

  const getEligibleUsers = (stepType: string) => {
    const active = users.filter(u => u.is_active !== false);
    if (stepType === 'audit') return active;
    if (stepType === 'execute') return active.filter(u =>
      ['super_admin', 'k8s_admin', 'release_admin', 'resource_admin'].includes(u.role)
    );
    return active;
  };

  const toggleAllUsers = (idx: number) => {
    const step = steps[idx];
    const eligible = getEligibleUsers(step.step_type);
    const allSelected = step.approver_ids.length === eligible.length && eligible.length > 0;
    updateStep(idx, { approver_ids: allSelected ? [] : eligible.map((u) => u.id) });
  };

  const handleSubmit = async () => {
    if (!name.trim()) { setError(t('approval.editor.nameRequired')); return; }
    if (steps.length === 0) { setError(t('approval.editor.addStepRequired')); return; }
    for (let i = 0; i < steps.length; i++) {
      if (steps[i].step_type !== 'submit' && steps[i].approver_ids.length === 0) {
        setError(t('approval.editor.stepNeedsApprover', { name: steps[i].name }));
        return;
      }
    }
    setSubmitting(true);
    setError('');
    try {
      const payload = {
        name: name.trim(),
        description: description.trim() || null,
        category,
        steps: steps.map((s, i) => ({
          step_number: i + 1,
          name: s.name,
          step_type: s.step_type,
          approver_ids: s.approver_ids.length > 0 ? JSON.stringify(s.approver_ids) : null,
          is_required: true,
          timeout_hours: 24,
          auto_approve_on_timeout: false,
        })),
      };
      if (isEdit && workflow) {
        await approvalWorkflowApi.update(workflow.id, payload);
      } else {
        await approvalWorkflowApi.create(payload);
      }
      onSaved();
    } catch (e: unknown) {
      const msg = (e as { response?: { data?: { detail?: string } } })?.response?.data?.detail || t('approval.editor.saveFailed');
      setError(msg);
    } finally {
      setSubmitting(false);
    }
  };

  const getUserName = (uid: number) => {
    const u = users.find((u) => u.id === uid);
    return u ? (u.display_name || u.username) : `#${uid}`;
  };

  const inputCls = 'w-full px-3 py-2 bg-[var(--dg-bg-tertiary)] border border-[var(--dg-border)] rounded-lg text-sm focus:border-blue-400 focus:outline-none transition-colors text-[var(--dg-text-primary)]';

  return (
    <Dialog open onOpenChange={(open) => !open && onClose()}>
      <DialogContent className="dg-card sm:max-w-2xl max-h-[90vh] overflow-hidden flex flex-col p-0 gap-0">
        <DialogHeader className="px-5 py-4 border-b border-[var(--dg-border)] shrink-0">
          <DialogTitle className="text-base font-semibold text-[var(--dg-text-primary)]">
            {isEdit ? t('approval.editor.editTitle') : t('approval.editor.newTitle')}
          </DialogTitle>
          <DialogDescription className="sr-only">
            {isEdit ? t('approval.editor.editTitle') : t('approval.editor.newTitle')}
          </DialogDescription>
        </DialogHeader>

        <div className="px-5 pb-5 space-y-4 pt-4 overflow-y-auto flex-1 min-h-0">
          {error && <div className="px-3 py-2 text-sm dg-text-red bg-red-500/10 rounded-lg">{error}</div>}

          <div className="grid grid-cols-2 gap-4">
            <div>
              <label className="block text-xs font-medium text-[var(--dg-text-secondary)] mb-1">{t('approval.editor.workflowName')} *</label>
              <input className={inputCls} value={name} onChange={(e) => setName(e.target.value)} placeholder={t('approval.editor.enterName')} />
            </div>
            <div>
              <label className="block text-xs font-medium text-[var(--dg-text-secondary)] mb-1">{t('approval.editor.workflowCategory')}</label>
              <select className={inputCls} value={category} onChange={(e) => setCategory(e.target.value)}>
                <option value="resource">{t('approval.category.resource')}</option>
                <option value="app">{t('approval.category.app')}</option>
                <option value="permission">{t('approval.category.permission')}</option>
              </select>
            </div>
          </div>

          <div>
            <label className="block text-xs font-medium text-[var(--dg-text-secondary)] mb-1">{t('approval.editor.workflowDesc')}</label>
            <input className={inputCls} value={description} onChange={(e) => setDescription(e.target.value)} placeholder={t('common.optional')} />
          </div>

          {/* Steps */}
          <div>
            <div className="flex items-center justify-between mb-2">
              <label className="text-xs font-medium text-[var(--dg-text-secondary)]">{t('approval.editor.workflowSteps')}</label>
              <div className="flex items-center gap-1">
                {stepTypes.map((tp) => (
                  <button key={tp.value} onClick={() => addStep(tp.value)}
                    className="flex items-center gap-1 px-2 py-1 text-[11px] font-medium bg-blue-500/10 dg-text-blue hover:bg-blue-500/20 rounded transition-colors">
                    <Plus className="w-3 h-3" />{tp.label}
                  </button>
                ))}
              </div>
            </div>

            <div className="space-y-2">
              {steps.map((step, idx) => {
                const colorCls = STEP_TYPE_COLORS[step.step_type];
                const Icon = STEP_TYPE_ICONS[step.step_type] || Shield;
                return (
                  <div key={idx} className="p-3 bg-[var(--dg-bg-primary)] rounded-lg border border-[var(--dg-border)]">
                    <div className="flex items-center gap-2 mb-2">
                      <div className={`w-7 h-7 rounded-md flex items-center justify-center flex-shrink-0 ${colorCls.split(' ')[0]}`}>
                        <Icon className={`w-3.5 h-3.5 ${colorCls.split(' ')[1]}`} />
                      </div>
                      <input
                        className="flex-1 px-2 py-1 bg-[var(--dg-bg-tertiary)] border border-[var(--dg-border)] rounded text-sm focus:border-blue-400 focus:outline-none text-[var(--dg-text-primary)]"
                        value={step.name} onChange={(e) => updateStep(idx, { name: e.target.value })}
                        placeholder={t('approval.step.name')}
                      />
                      <span className={`text-[10px] px-1.5 py-0.5 rounded ${colorCls}`}>
                        {stepTypeLabels[step.step_type]}
                      </span>
                      <div className="flex items-center gap-0.5 ml-1">
                        <button onClick={() => moveStep(idx, -1)} disabled={idx === 0}
                          className="p-1 rounded hover:bg-[var(--dg-bg-hover)] text-[var(--dg-text-muted)] disabled:opacity-20 transition-colors">
                          <ArrowUp className="w-3.5 h-3.5" />
                        </button>
                        <button onClick={() => moveStep(idx, 1)} disabled={idx === steps.length - 1}
                          className="p-1 rounded hover:bg-[var(--dg-bg-hover)] text-[var(--dg-text-muted)] disabled:opacity-20 transition-colors">
                          <ArrowDown className="w-3.5 h-3.5" />
                        </button>
                        <button onClick={() => removeStep(idx)}
                          className="p-1 rounded hover:bg-red-500/10 text-[var(--dg-text-muted)] hover:dg-text-red transition-colors">
                          <Trash2 className="w-3.5 h-3.5" />
                        </button>
                      </div>
                    </div>

                    {step.step_type !== 'submit' && (
                      <div className="pl-9 mt-2">
                        <UserSelectInline
                          users={getEligibleUsers(step.step_type)}
                          selectedIds={step.approver_ids}
                          label={step.step_type === 'audit' ? t('approval.editor.auditUser') : t('approval.editor.executeUser')}
                          onToggle={(uid) => toggleUser(idx, uid)}
                          onToggleAll={() => toggleAllUsers(idx)}
                          onClear={() => updateStep(idx, { approver_ids: [] })}
                          getUserName={getUserName}
                        />
                      </div>
                    )}
                  </div>
                );
              })}

              {steps.length === 0 && (
                <div className="text-center py-4 text-sm text-[var(--dg-text-muted)]">
                  {t('approval.step.addHint')}
                </div>
              )}
            </div>
          </div>
        </div>

        <DialogFooter className="px-5 py-4 border-t border-[var(--dg-border)] shrink-0">
          <Button variant="outline" className="dg-btn-secondary" onClick={onClose}>
            {t('common.cancel')}
          </Button>
          <Button className="dg-btn-primary" onClick={handleSubmit} disabled={submitting}>
            {submitting && <Loader2 className="w-4 h-4 animate-spin mr-1" />}
            {isEdit ? t('common.save') : t('common.create')}
          </Button>
        </DialogFooter>
      </DialogContent>
    </Dialog>
  );
}

/* ------------------------------------------------------------------ */
/*  Main Page                                                           */
/* ------------------------------------------------------------------ */

export default function ApprovalWorkflowPage() {
  const { t } = useTranslation();
  const confirm = useConfirm();
  const [items, setItems] = useState<WorkflowItem[]>([]);
  const [users, setUsers] = useState<UserItem[]>([]);
  const [loading, setLoading] = useState(true);
  const [error, setError] = useState<string | null>(null);
  const [expandedId, setExpandedId] = useState<number | null>(null);
  const [editorWorkflow, setEditorWorkflow] = useState<WorkflowItem | null | undefined>(undefined);

  const categoryLabels: Record<string, string> = {
    resource: t('approval.category.resource'),
    app: t('approval.category.app'),
    permission: t('approval.category.permission'),
  };

  const stepTypeLabels: Record<string, string> = {
    submit: t('approval.step.submit'),
    audit: t('approval.step.audit'),
    execute: t('approval.step.execute'),
  };

  const fetchWorkflows = useCallback(async () => {
    try {
      setLoading(true);
      setError(null);
      const res: JsonData | JsonData[] = await approvalWorkflowApi.list();
      const data = Array.isArray(res) ? res : (Array.isArray(res.list) ? res.list : []);
      const normalized = data.map((w) => ({ ...w, steps: w.steps || [] }));
      setItems(normalized);
    } catch {
      setError(t('approval.msg.fetchFailed'));
    } finally {
      setLoading(false);
    }
  }, [t]);

  const fetchUsers = useCallback(async () => {
    try {
      const res: JsonData | JsonData[] = await userApi.getUsers();
      const data = Array.isArray(res) ? res : (Array.isArray(res.list) ? res.list : []);
      // Normalize: extract role code from roles array
      const normalized = data.map((u) => {
        let role = u.role ?? '';
        if (!role && Array.isArray(u.roles) && u.roles.length > 0) {
          const first = u.roles[0];
          role = typeof first === 'string' ? first : (first?.code ?? first?.name ?? '');
        }
        return { ...u, role };
      });
      setUsers(normalized);
    } catch { /* ignore */ }
  }, []);

  useEffect(() => {
    fetchWorkflows();
    fetchUsers();
  }, [fetchWorkflows, fetchUsers]);

  const toggleActive = useCallback(async (wf: WorkflowItem) => {
    try {
      await approvalWorkflowApi.update(wf.id, { is_active: !wf.is_active });
      setItems((prev) => prev.map((w) => (w.id === wf.id ? { ...w, is_active: !w.is_active } : w)));
      toast.success(wf.is_active ? t('approval.msg.disabled') : t('approval.msg.enabled'));
    } catch { toast.error(t('common.operationFailed')); }
  }, [t]);

  const handleDelete = useCallback(async (id: number, name: string) => {
    const ok = await confirm({
      title: t('approval.msg.deleteTitle'),
      description: t('approval.msg.deleteConfirm', { name }),
      confirmText: t('common.delete'),
      variant: 'destructive',
    });
    if (!ok) return;
    try {
      await approvalWorkflowApi.delete(id);
      setItems((prev) => prev.filter((w) => w.id !== id));
      toast.success(t('approval.msg.deleted'));
    } catch { toast.error(t('approval.msg.deleteFailed')); }
  }, [confirm, t]);

  const setDefault = useCallback(async (id: number) => {
    try {
      await approvalWorkflowApi.setDefault(id);
      setItems((prev) => prev.map((w) => ({ ...w, is_default: w.id === id })));
      toast.success(t('approval.msg.setDefaultSuccess'));
    } catch { toast.error(t('common.operationFailed')); }
  }, [t]);

  const getUserName = useCallback(
    (uid: number) => {
      const u = users.find((u) => u.id === uid);
      return u ? (u.display_name || u.username) : `#${uid}`;
    },
    [users]
  );

  return (
    <>
      <PageShell
        variant="list"
        maxWidth="xl"
        title={t('approval.workflowTitle')}
        subtitle={t('approval.workflowSubtitle')}
        icon={<GitBranch className="h-5 w-5" />}
        loading={loading}
        actions={(
          <Button className="dg-btn-primary" onClick={() => setEditorWorkflow(null)}>
            <Plus className="w-4 h-4 mr-1.5" />{t('approval.newWorkflow')}
          </Button>
        )}
      >
        {error ? (
          <PageEmpty
            title={error}
            action={(
              <Button variant="outline" className="dg-btn-secondary" onClick={fetchWorkflows}>
                {t('approval.retry')}
              </Button>
            )}
          />
        ) : items.length === 0 ? (
          <PageEmpty
            icon={<GitBranch className="w-12 h-12" />}
            title={t('approval.noWorkflows')}
            action={(
              <Button variant="outline" className="dg-btn-secondary" onClick={() => setEditorWorkflow(null)}>
                {t('approval.createFirst')}
              </Button>
            )}
          />
        ) : (
          <div className="grid gap-4">
            {items.map((wf) => {
              const isExpanded = expandedId === wf.id;
              return (
                <Card key={wf.id} className={`dg-card overflow-hidden ${!wf.is_active ? 'opacity-60' : ''}`}>
                  <CardContent className="p-4 sm:p-5">
                    <div className="flex flex-col sm:flex-row sm:items-start sm:justify-between gap-3">
                      <div className="flex-1 min-w-0">
                        <div className="flex items-center gap-3 mb-2 flex-wrap">
                          <h3 className="text-lg font-semibold text-[var(--dg-text-primary)]">{wf.name}</h3>
                          {wf.is_default && <span className="text-[10px] px-1.5 py-0.5 rounded bg-yellow-400/15 dg-text-yellow flex items-center gap-1"><Star className="w-3 h-3" />{t('approval.status.default')}</span>}
                          <span className={`text-[10px] px-1.5 py-0.5 rounded ${wf.is_active ? 'bg-green-500/15 dg-text-green' : 'bg-red-500/15 dg-text-red'}`}>
                            {wf.is_active ? t('approval.status.enabled') : t('approval.status.disabled')}
                          </span>
                          <span className="text-[10px] px-1.5 py-0.5 rounded bg-blue-500/15 dg-text-blue">
                            {categoryLabels[wf.category] || wf.category}
                          </span>
                        </div>
                        {wf.description && <p className="text-sm text-[var(--dg-text-secondary)] mb-1">{wf.description}</p>}
                        <div className="flex items-center gap-1.5 mt-2 flex-wrap">
                          {wf.steps?.map((s, i) => (
                            <span key={i} className="flex items-center gap-1">
                              <span className={`text-[10px] px-1.5 py-0.5 rounded ${STEP_TYPE_COLORS[s.step_type] || 'dg-badge-muted'}`}>
                                {stepTypeLabels[s.step_type] || s.step_type}
                              </span>
                              {i < (wf.steps?.length || 0) - 1 && (
                                <span className="text-[var(--dg-text-muted)] text-[10px]">→</span>
                              )}
                            </span>
                          ))}
                        </div>
                      </div>

                      <div className="flex items-center gap-1 flex-shrink-0 sm:ml-4 self-end sm:self-start">
                        <button onClick={() => setExpandedId(isExpanded ? null : wf.id)}
                          className="p-1.5 rounded hover:bg-[var(--dg-bg-hover)] text-[var(--dg-text-muted)] transition-colors">
                          {isExpanded ? <ChevronUp className="w-4 h-4" /> : <ChevronDown className="w-4 h-4" />}
                        </button>
                        {!wf.is_default && (
                          <button onClick={() => setDefault(wf.id)}
                            className="p-1.5 rounded hover:bg-yellow-500/10 text-[var(--dg-text-muted)] hover:dg-text-yellow transition-colors" title={t('approval.msg.setDefaultSuccess')}>
                            <Star className="w-4 h-4" />
                          </button>
                        )}
                        <button onClick={() => toggleActive(wf)}
                          className={`p-1.5 rounded transition-colors ${wf.is_active ? 'hover:bg-red-500/10 dg-text-green hover:dg-text-red' : 'hover:bg-green-500/10 dg-text-red hover:dg-text-green'}`}
                          title={wf.is_active ? t('approval.status.disabled') : t('approval.status.enabled')}>
                          <Play className={`w-4 h-4 ${!wf.is_active ? 'rotate-180' : ''}`} />
                        </button>
                        <button onClick={() => setEditorWorkflow(wf)}
                          className="p-1.5 rounded hover:bg-[var(--dg-bg-hover)] text-[var(--dg-text-muted)] hover:dg-text-blue transition-colors" title={t('common.edit')}>
                          <Edit2 className="w-4 h-4" />
                        </button>
                        <button onClick={() => handleDelete(wf.id, wf.name)}
                          className="p-1.5 rounded hover:bg-red-500/10 text-[var(--dg-text-muted)] hover:dg-text-red transition-colors" title={t('common.delete')}>
                          <Trash2 className="w-4 h-4" />
                        </button>
                      </div>
                    </div>

                    {isExpanded && (
                      <div className="mt-4 pt-4 border-t border-[var(--dg-border)] space-y-3">
                        {wf.steps?.map((s, i) => {
                          const ids = parseApproverIds(s.approver_ids);
                          return (
                            <div key={i} className="flex items-start gap-3 p-3 bg-[var(--dg-bg-primary)] rounded-lg">
                              <div className="w-6 h-6 rounded-full bg-[var(--dg-bg-tertiary)] flex items-center justify-center text-xs font-medium text-[var(--dg-text-secondary)] flex-shrink-0 mt-0.5">
                                {s.step_number}
                              </div>
                              <div className="flex-1 min-w-0">
                                <div className="flex items-center gap-2 mb-1">
                                  <span className="text-sm font-medium text-[var(--dg-text-primary)]">{s.name}</span>
                                  <span className={`text-[10px] px-1.5 py-0.5 rounded ${STEP_TYPE_COLORS[s.step_type] || 'dg-badge-muted'}`}>
                                    {stepTypeLabels[s.step_type] || s.step_type}
                                  </span>
                                </div>
                                {ids.length > 0 && (
                                  <div className="flex flex-wrap gap-1">
                                    {ids.map((uid) => (
                                      <span key={uid} className="inline-flex items-center gap-1 px-1.5 py-0.5 rounded text-[11px] bg-blue-500/15 dg-text-blue">
                                        {getUserName(uid)}
                                      </span>
                                    ))}
                                  </div>
                                )}
                                {ids.length === 0 && s.step_type !== 'submit' && (
                                  <span className="text-[11px] dg-text-red">{t('approval.detail.noApproverLinked')}</span>
                                )}
                              </div>
                            </div>
                          );
                        })}
                      </div>
                    )}
                  </CardContent>
                </Card>
              );
            })}
          </div>
        )}
      </PageShell>

      {editorWorkflow !== undefined && (
        <WorkflowEditorModal
          workflow={editorWorkflow}
          users={users}
          onClose={() => setEditorWorkflow(undefined)}
          onSaved={() => { setEditorWorkflow(undefined); fetchWorkflows(); }}
        />
      )}
    </>
  );
}