// ScriptManager — 脚本库主组件 // Logan.Li
import { useState, useEffect } from 'react';
import { useTranslation } from 'react-i18next';
import { Plus, Search, RotateCcw, Trash2, FileCode } from 'lucide-react';
import { Button } from '@/components/ui/button';
import { Input } from '@/components/ui/input';
import {
  Select, SelectContent, SelectItem, SelectTrigger, SelectValue,
} from '@/components/ui/select';
import { Checkbox } from '@/components/ui/checkbox';
import { toast } from 'sonner';
import { useConfirm } from '@/components/ui/confirm-dialog';
import { scriptApi } from '@/api';
import type { ScriptRuntimeInfo } from '@/api/task/script';
import { usePermission } from '@/hooks/usePermission';
import {
  type Script, mapScript, scriptTypes, genCode, availableScriptTypes,
} from './script-helpers';
import { ScriptRuntimeBanner } from './ScriptRuntimeBanner';
import type { ScriptFormData } from './ScriptFormDialog';
import ScriptFormDialog from './ScriptFormDialog';
import { ScriptTable } from './ScriptTable';
import { PageShell } from '@/components/layout/PageShell';
import { ContentPanel } from '@/components/layout/ContentPanel';
import { PageEmpty } from '@/components/layout/PageEmpty';
import type { JsonData } from '@/types/common';

export function ScriptManager() {
  const { t } = useTranslation();
  const _confirm = useConfirm();
  const { hasAnyPermission, isAdmin } = usePermission();
  const canWrite = isAdmin || hasAnyPermission(['auto:script', 'auto:cron', 'auto:ansible']);
  const [scripts, setScripts] = useState<Script[]>([]);
  const [runtime, setRuntime] = useState<ScriptRuntimeInfo | null>(null);
  const [runtimeLoading, setRuntimeLoading] = useState(true);
  const [loading, setLoading] = useState(false);
  const [searchQuery, setSearchQuery] = useState('');
  const [typeFilter, setTypeFilter] = useState<string>('all');
  const [selectedIds, setSelectedIds] = useState<number[]>([]);

  const [editorOpen, setEditorOpen] = useState(false);
  const [editingId, setEditingId] = useState<number | null>(null);
  const [selectedScript, setSelectedScript] = useState<Script | null>(null);

  const [formData, setFormData] = useState<ScriptFormData>({
    name: '', description: '', content: '', type: 'shell', timeout: 300,
  });

  const fetchScripts = async () => {
    setLoading(true);
    try {
      const res = await scriptApi.getScripts({ page_size: 100 });
      const items = (res as JsonData)?.list || [];
      setScripts(items.map(mapScript));
    } catch {
      toast.error(t('task.scriptList.toastFetchFailed'));
    } finally {
      setLoading(false);
    }
  };

  const fetchRuntime = async () => {
    setRuntimeLoading(true);
    try {
      const rt = await scriptApi.getRuntime();
      setRuntime(rt);
    } catch {
      // 静默失败
    } finally {
      setRuntimeLoading(false);
    }
  };

  useEffect(() => {
    fetchScripts();
    fetchRuntime();
  // eslint-disable-next-line react-hooks/exhaustive-deps
  }, []);

  const openCreate = () => {
    const types = availableScriptTypes(runtime);
    const first = types.find((t) => !t.disabled) ?? types[0] ?? scriptTypes[0];
    setEditingId(null);
    setFormData({
      name: '', description: '', content: first.sample,
      type: first.value, timeout: 300,
    });
    setEditorOpen(true);
  };

  const openEdit = (sc: Script) => {
    setEditingId(sc.id);
    setSelectedScript(sc);
    setFormData({
      name: sc.name,
      description: sc.description,
      content: sc.content,
      type: sc.type,
      timeout: sc.timeout,
    });
    setEditorOpen(true);
  };

  const handleTypeChange = (t: string) => {
    setFormData((prev) => {
      const isDefaultSample = scriptTypes.some(s => s.sample === prev.content) || prev.content === '';
      const match = scriptTypes.find(s => s.value === t);
      return {
        ...prev,
        type: t,
        content: editingId === null && isDefaultSample && match ? match.sample : prev.content,
      };
    });
  };

  const handleSave = async () => {
    if (!formData.name.trim() || !formData.content.trim()) {
      toast.error(t('task.scriptList.toastNameRequired'));
      return;
    }
    const payload = {
      name: formData.name.trim(),
      code: genCode(),
      description: formData.description,
      type: formData.type,
      content: formData.content,
      timeout: Number(formData.timeout) || 300,
    };
    try {
      if (editingId !== null) {
        await scriptApi.updateScript(editingId, payload);
        toast.success(t('task.scriptList.toastSaved'));
      } else {
        await scriptApi.createScript(payload);
        toast.success(t('task.scriptList.toastSaved'));
      }
      setEditorOpen(false);
      fetchScripts();
    } catch (e) {
      toast.error(e instanceof Error ? e.message : (editingId !== null ? t('kubernetes.deployment.imageUpdateFailed') : t('monitor.dashboard.custom.toastCreateFailed')));
    }
  };

  const handleClone = async (sc: Script) => {
    try {
      await scriptApi.createScript({
        name: `${sc.name} ${t('task.scriptList.copySuffix')}`,
        code: genCode(),
        description: sc.description,
        type: sc.type,
        content: sc.content,
        timeout: sc.timeout,
      });
      toast.success(t('common.copySuccess'));
      fetchScripts();
    } catch (e) {
      toast.error(e instanceof Error ? e.message : t('monitor.logPanel.copyFailed'));
    }
  };

  const handleDelete = async (sc: Script) => {
    const ok = await _confirm({
      title: t('task.scriptList.delete'),
      description: t('task.scriptList.confirmDelete', { name: sc.name }),
      confirmText: t('kubernetes.storage.delete2'),
      variant: 'destructive',
    });
    if (!ok) return;
    try {
      await scriptApi.deleteScript(sc.id);
      toast.success(t('kubernetes.msg.deleteSuccess'));
      fetchScripts();
    } catch (e) {
      toast.error(e instanceof Error ? e.message : t('kubernetes.msg.deleteFailed2'));
    }
  };

  const filteredScripts = scripts.filter(sc => {
    const q = searchQuery.toLowerCase();
    const matchSearch = sc.name.toLowerCase().includes(q) ||
      sc.description.toLowerCase().includes(q);
    const matchType = typeFilter === 'all' || sc.type === typeFilter;
    return matchSearch && matchType;
  });

  const toggleSelect = (id: number) => {
    setSelectedIds(prev => prev.includes(id) ? prev.filter(i => i !== id) : [...prev, id]);
  };

  const allSelected = filteredScripts.length > 0 && selectedIds.length === filteredScripts.length;

  const toggleSelectAll = () => {
    setSelectedIds(allSelected ? [] : filteredScripts.map(sc => sc.id));
  };

  const handleBatchDelete = async () => {
    if (selectedIds.length === 0) return;
    const ok = await _confirm({
      title: t('task.scriptList.delete'),
      description: t('task.scriptList.batchDeleteConfirm', { count: selectedIds.length }),
      confirmText: t('system.terminalBatchDelete'),
      variant: 'destructive',
    });
    if (!ok) return;
    try {
      await scriptApi.batchDelete(selectedIds);
      toast.success(t('task.scriptList.toastDeleted', { count: selectedIds.length }));
      setSelectedIds([]);
      fetchScripts();
    } catch (e) {
      toast.error(e instanceof Error ? e.message : t('system.batchDeleteFailed'));
    }
  };

  const toolbar = (
    <div className="flex flex-wrap items-center justify-between gap-4">
      <div className="flex items-center gap-2 flex-1 min-w-[300px]">
        <div className="relative flex-1">
          <Search className="absolute left-3 top-1/2 -translate-y-1/2 w-4 h-4 dg-text-muted" />
          <Input
            placeholder={t('deploy.label.searchPlaceholder')}
            value={searchQuery}
            onChange={(e) => setSearchQuery(e.target.value)}
            className="pl-10 dg-input"
          />
        </div>
        <Select value={typeFilter} onValueChange={setTypeFilter}>
          <SelectTrigger className="w-[140px] dg-input">
            <SelectValue placeholder={t('system.credentialType')} />
          </SelectTrigger>
          <SelectContent>
            <SelectItem value="all"> {t('k8s.topology.allTypes')} </SelectItem>
            {scriptTypes.map(t => (
              <SelectItem key={t.value} value={t.value}>{t.label}</SelectItem>
            ))}
          </SelectContent>
        </Select>
      </div>
    </div>
  );

  return (
    <>
      <PageShell
        variant="list"
        title={t('automation.scripts')}
        subtitle={t('task.scriptList.subtitle')}
        icon={<FileCode className="h-5 w-5" />}
        toolbar={toolbar}
        loading={loading}
        actions={(
          <>
            <Button variant="outline" className="dg-btn-secondary" onClick={fetchScripts}>
              <RotateCcw className="w-4 h-4 mr-2" />
              {t('task.scriptList.refresh')}
            </Button>
            {canWrite && (
              <Button className="dg-btn-primary" onClick={openCreate}>
                <Plus className="w-4 h-4 mr-2" />
                {t('task.scriptList.create')}
              </Button>
            )}
          </>
        )}
      >
        <div className="mb-4">
          <ScriptRuntimeBanner runtime={runtime} loading={runtimeLoading} />
        </div>
        {selectedIds.length > 0 && (
          <div className="flex items-center justify-between gap-4 px-4 py-2.5 rounded-lg border border-[var(--dg-border)] bg-[var(--dg-bg-secondary)] mb-4">
            <div className="flex items-center gap-3">
              <Checkbox
                checked={allSelected}
                onCheckedChange={toggleSelectAll}
                className="border-[var(--dg-border)]"
              />
              <span className="text-sm dg-text-secondary">
                {t('task.scriptList.selectedCount', { selected: selectedIds.length, total: filteredScripts.length })}
              </span>
            </div>
            <div className="flex items-center gap-2">
              <Button variant="outline" size="sm" className="dg-btn-secondary" onClick={() => setSelectedIds([])}>
                {t('task.scriptList.cancelSelect')}
              </Button>
              <Button
                variant="outline"
                size="sm"
                className="dg-btn-danger dg-btn-sm"
                onClick={handleBatchDelete}
              >
                <Trash2 className="w-4 h-4 mr-2" />
                {t('task.scriptList.batchDelete')}
              </Button>
            </div>
          </div>
        )}

        {filteredScripts.length === 0 ? (
          <PageEmpty
            title={scripts.length === 0 ? t('automation.noScript') : t('task.scriptList.empty')}
            description={scripts.length === 0 ? t('task.scriptList.emptyHint') : undefined}
            action={scripts.length === 0 && canWrite ? (
              <Button className="dg-btn-primary" onClick={openCreate}>
                <Plus className="w-4 h-4 mr-2" />
                {t('task.scriptList.create')}
              </Button>
            ) : undefined}
          />
        ) : (
          <ContentPanel>
            <ScriptTable
              scripts={filteredScripts}
              selectedIds={selectedIds}
              onToggleSelect={toggleSelect}
              onToggleSelectAll={toggleSelectAll}
              allSelected={allSelected}
              onEdit={openEdit}
              onClone={handleClone}
              onDelete={handleDelete}
            />
          </ContentPanel>
        )}
      </PageShell>

      <ScriptFormDialog
        open={editorOpen}
        onOpenChange={setEditorOpen}
        editingId={editingId}
        editingCode={selectedScript?.code || ''}
        formData={formData}
        setFormData={setFormData}
        onTypeChange={handleTypeChange}
        onSave={handleSave}
        runtime={runtime}
      />
    </>
  );
}