/**
 * ToolsSettings — 工具管理 Tab
 *
 * 从 SettingsModal.tsx 提取（v0.4.1 拆分）。
 * 功能：工具启用/禁用开关、自动执行工具管理（乐观更新 + 失败回滚）。
 */

import { useState, useEffect } from 'react';
import { Button, Stack, Typography, Checkbox, Divider, Chip, Box, TextField } from '@mui/material';
import { alpha } from '@mui/material/styles';
import { useConfig } from './useConfig';

export function ToolsSettings() {
  const [tools, setTools] = useState<
    Array<{
      name: string;
      description: string;
      riskLevel: string;
      requiresPermission: boolean;
      enabled: boolean;
    }>
  >([]);
  const [autoExecList, setAutoExecList] = useState<string[]>([]);

  const loadTools = () => {
    if (window.metona?.tools?.list) {
      window.metona.tools
        .list()
        .then((l) =>
          setTools(
            (l as MetonaToolInfo[]).map((t) => ({
              name: t.name,
              description: t.description,
              riskLevel: t.riskLevel,
              requiresPermission: t.requiresPermission,
              enabled: t.enabled,
            })),
          ),
        )
        .catch((err) => {
          console.error('[ToolsSettings]', err);
        });
    }
  };
  const loadAutoExec = () => {
    if (window.metona?.tool?.getAutoExecuteList) {
      window.metona.tool
        .getAutoExecuteList()
        .then((r) => {
          if (r.success) setAutoExecList(r.data);
        })
        .catch((err) => {
          console.error('[ToolsSettings]', err);
        });
    }
  };
  useEffect(() => {
    loadTools();
    loadAutoExec();
  }, []);

  const handleToggle = async (name: string, enabled: boolean) => {
    // v0.3.6 修复: 乐观更新失败时回滚 UI，避免开关显示与实际状态不一致
    // 注意: 只回滚失败的单个工具（用 !enabled），不能用 setTools(prev) 整体回滚，
    // 否则会覆盖 await 期间用户对其他工具的并发修改
    setTools((p) => p.map((t) => (t.name === name ? { ...t, enabled } : t)));
    try {
      const r = await window.metona?.tools?.toggle(name, enabled);
      if (r && !r.success) {
        setTools((p) => p.map((t) => (t.name === name ? { ...t, enabled: !enabled } : t)));
        import('@metona-team/metona-toast')
          .then((mod) => mod.default.error(r.error ?? '切换工具失败'))
          .catch(() => {});
      }
    } catch (err) {
      console.error('[ToolsSettings]', err);
      setTools((p) => p.map((t) => (t.name === name ? { ...t, enabled: !enabled } : t)));
      import('@metona-team/metona-toast')
        .then((mod) => mod.default.error('切换工具失败'))
        .catch(() => {});
    }
  };

  // 设置/取消自动执行
  const handleSetAutoExec = async (name: string, enabled: boolean) => {
    if (!window.metona?.tool?.setAutoExecute) return;
    try {
      const r = await window.metona.tool.setAutoExecute(name, enabled);
      if (r.success) {
        setAutoExecList((p) => (enabled ? [...p, name] : p.filter((n) => n !== name)));
      } else {
        import('@metona-team/metona-toast')
          .then((mod) => mod.default.error(r.error ?? '设置自动执行失败'))
          .catch(() => {});
      }
    } catch (err) {
      console.error('[ToolsSettings]', err);
      import('@metona-team/metona-toast')
        .then((mod) => mod.default.error('设置自动执行失败'))
        .catch(() => {});
    }
  };

  // v0.3.1: 添加 critical 键，防止 critical 级别工具 Chip 渲染为 undefined color
  const riskColors: Record<string, 'success' | 'info' | 'warning' | 'error'> = {
    safe: 'success',
    low: 'info',
    medium: 'warning',
    high: 'error',
    critical: 'error',
  };

  // 需要确认的工具（high/critical 或 requiresPermission）
  const needsConfirmTools = tools.filter(
    (t) => t.riskLevel === 'high' || t.riskLevel === 'critical' || t.requiresPermission,
  );
  // 需要确认但未设为自动执行的工具
  const pendingConfirmTools = needsConfirmTools.filter((t) => !autoExecList.includes(t.name));
  // 已设为自动执行的工具详情
  const autoExecToolDetails = autoExecList
    .map((name) => tools.find((t) => t.name === name))
    .filter((t): t is NonNullable<typeof t> => t !== undefined);

  return (
    <Stack spacing={2}>
      <Typography variant="subtitle2" sx={{ fontWeight: 600 }}>
        工具管理
      </Typography>
      {tools.length === 0 ? (
        <Typography variant="caption" sx={{ textAlign: 'center', py: 4, color: 'text.secondary' }}>
          加载中...
        </Typography>
      ) : (
        tools.map((t) => (
          <Stack
            key={t.name}
            direction="row"
            sx={{
              py: 1,
              px: 1.5,
              borderRadius: 1.5,
              bgcolor: 'secondary.main',
              justifyContent: 'space-between',
              alignItems: 'center',
            }}
          >
            <Stack direction="row" spacing={1} sx={{ minWidth: 0, flex: 1, alignItems: 'center' }}>
              <Typography variant="body2" sx={{ fontFamily: 'monospace', fontSize: 12 }}>
                {t.name}
              </Typography>
              <Typography
                variant="caption"
                sx={{ overflow: 'hidden', textOverflow: 'ellipsis', whiteSpace: 'nowrap' }}
              >
                {t.description.slice(0, 40)}
              </Typography>
            </Stack>
            <Stack direction="row" spacing={1} sx={{ alignItems: 'center' }}>
              <Chip
                label={t.riskLevel.toUpperCase()}
                size="small"
                color={riskColors[t.riskLevel]}
                variant="outlined"
                sx={{ height: 18, fontSize: 9 }}
              />
              <Checkbox
                checked={t.enabled}
                onChange={(e) => handleToggle(t.name, e.target.checked)}
                size="small"
              />
            </Stack>
          </Stack>
        ))
      )}

      <Divider sx={{ my: 1 }} />

      {/* ===== 自动执行工具管理 ===== */}
      <Stack direction="row" sx={{ alignItems: 'center', justifyContent: 'space-between' }}>
        <Typography variant="subtitle2" sx={{ fontWeight: 600 }}>
          自动执行工具
        </Typography>
        <Chip
          label={`${autoExecList.length} 个`}
          size="small"
          color={autoExecList.length > 0 ? 'success' : 'default'}
          variant="outlined"
          sx={{ height: 18, fontSize: 10 }}
        />
      </Stack>
      <Typography variant="caption" sx={{ color: 'text.secondary', lineHeight: 1.5 }}>
        已设为自动执行的工具将跳过用户确认步骤，直接执行。此设置跨会话持久化。
      </Typography>

      {/* 已自动执行的工具列表 */}
      {autoExecToolDetails.length === 0 ? (
        <Typography
          variant="caption"
          sx={{ textAlign: 'center', py: 2, color: 'text.disabled', fontStyle: 'italic' }}
        >
          暂无自动执行工具
        </Typography>
      ) : (
        autoExecToolDetails.map((t) => (
          <Stack
            key={t.name}
            direction="row"
            sx={(theme) => ({
              py: 1,
              px: 1.5,
              borderRadius: 1.5,
              // 用主题 success 色的 12% 透明度做底，文字和按钮保持不透明
              bgcolor: alpha(theme.palette.success.main, 0.12),
              // 左侧绿色状态条，强化"已自动执行"视觉
              boxShadow: `inset 3px 0 0 ${theme.palette.success.main}`,
              justifyContent: 'space-between',
              alignItems: 'center',
            })}
          >
            <Stack direction="row" spacing={1} sx={{ alignItems: 'center', minWidth: 0, flex: 1 }}>
              <Box
                component="span"
                sx={{
                  width: 6,
                  height: 6,
                  borderRadius: '50%',
                  bgcolor: 'success.main',
                  flexShrink: 0,
                }}
              />
              <Typography
                variant="body2"
                sx={{
                  fontFamily: 'monospace',
                  fontSize: 12,
                  color: 'text.primary',
                  fontWeight: 600,
                }}
              >
                {t.name}
              </Typography>
              <Chip label="自动" size="small" color="success" sx={{ height: 16, fontSize: 9 }} />
            </Stack>
            <Button
              size="small"
              color="error"
              variant="contained"
              sx={{ fontSize: 11, minWidth: 72, fontWeight: 600 }}
              onClick={() => handleSetAutoExec(t.name, false)}
            >
              取消自动
            </Button>
          </Stack>
        ))
      )}

      {/* 可设为自动执行的工具（需要确认但未设置） */}
      {pendingConfirmTools.length > 0 && (
        <>
          <Typography variant="caption" sx={{ fontWeight: 600, color: 'text.secondary', mt: 1 }}>
            可设为自动执行（当前需要确认）
          </Typography>
          {pendingConfirmTools.map((t) => (
            <Stack
              key={t.name}
              direction="row"
              sx={{
                py: 1,
                px: 1.5,
                borderRadius: 1.5,
                bgcolor: 'secondary.main',
                border: '1px dashed',
                borderColor: 'divider',
                justifyContent: 'space-between',
                alignItems: 'center',
              }}
            >
              <Stack
                direction="row"
                spacing={1}
                sx={{ alignItems: 'center', minWidth: 0, flex: 1 }}
              >
                <Typography
                  variant="body2"
                  sx={{ fontFamily: 'monospace', fontSize: 12, color: 'text.primary' }}
                >
                  {t.name}
                </Typography>
                <Chip
                  label={t.riskLevel.toUpperCase()}
                  size="small"
                  color={riskColors[t.riskLevel]}
                  variant="outlined"
                  sx={{ height: 16, fontSize: 9 }}
                />
              </Stack>
              <Button
                size="small"
                color="success"
                variant="contained"
                sx={{ fontSize: 11, minWidth: 72, fontWeight: 600 }}
                onClick={() => handleSetAutoExec(t.name, true)}
              >
                设为自动
              </Button>
            </Stack>
          ))}
        </>
      )}

      {/* ===== 网络代理（v0.6.4 P4-5）===== */}
      <Divider sx={{ my: 1 }} />
      <Typography variant="subtitle2" sx={{ fontWeight: 600 }}>
        网络代理
      </Typography>
      <ProxyField />
    </Stack>
  );
}

/**
 * v0.6.4 P4-5: network.proxyUrl 编辑项 —— useConfig 保存即触发主进程
 * applySessionProxy（shared.ts 副作用联动），Chromium session 与主进程 fetch
 * 双通道同时生效。格式示例：http://127.0.0.1:7890 或 socks5://user:pass@host:1080。
 */
function ProxyField(): React.JSX.Element {
  const [proxyUrl, setProxyUrl] = useConfig('network.proxyUrl', '');
  const [draft, setDraft] = useState<string>('');

  // 首次载入后把配置值同步到草稿（此后用户自由编辑，blur/save 时提交）
  const [synced, setSynced] = useState(false);
  useEffect(() => {
    if (!synced && proxyUrl !== null) {
      setDraft(proxyUrl);
      setSynced(true);
    }
  }, [proxyUrl, synced]);

  const invalid =
    !!draft.trim() && !/^(https?|socks[45]):\/\//i.test(draft.trim());

  return (
    <>
      <TextField
        size="small"
        label="代理地址（可选）"
        value={draft}
        onChange={(e) => setDraft(e.target.value)}
        onBlur={() => {
          if (draft.trim() !== (proxyUrl ?? '') && !invalid) {
            setProxyUrl(draft.trim());
          }
        }}
        onKeyDown={(e) => {
          if (e.key === 'Enter') {
            e.currentTarget.blur();
          }
        }}
        placeholder="http://127.0.0.1:7890 或 socks5://…（留空直连）"
        error={invalid}
        helperText={
          invalid
            ? '需以 http://、https://、socks5:// 或 socks4:// 开头'
            : '应用于 Chromium 会话与主进程全部网络请求；未填时回退系统环境变量 HTTPS_PROXY。'
        }
      />
    </>
  );
}