feat: 重构数据中枢工作台与接入管理

- 新增统一的数据源、目录、纳管表与 Excel 处理后端能力

- 重建管理端数据中枢工作台并替换旧表管理页面

- 补充数据中枢迁移脚本、连接器底座与说明字段支持

easyflow-ui-admin/app/src/views/datacenter/composables/use-source-form.ts

@@ -0,0 +1,188 @@
+import type { FormRules } from 'element-plus';
+
+import { computed, reactive, ref, watch } from 'vue';
+
+import {
+  mergeConfigJsonBySourceType,
+  sourceConnectionDefaults,
+  sourceTypeLabels,
+} from './datacenter-constants';
+
+export function useSourceForm() {
+  const lastGeneratedJdbcUrl = ref('');
+  const lastGeneratedDriverClassName = ref('');
+
+  const form = reactive<Record<string, any>>({
+    id: undefined,
+    sourceName: '',
+    sourceCode: '',
+    sourceType: 'MYSQL',
+    accessMode: 'READ_ONLY',
+    driverClassName: '',
+    jdbcUrl: '',
+    host: '',
+    port: undefined,
+    databaseName: '',
+    schemaName: '',
+    username: '',
+    password: '',
+    builtinFlag: 0,
+    configJson: {},
+  });
+
+  const rules: FormRules = {
+    sourceName: [
+      { required: true, message: '请输入连接名称', trigger: 'blur' },
+    ],
+    sourceType: [
+      { required: true, message: '请选择连接类型', trigger: 'change' },
+    ],
+    databaseName: [
+      {
+        trigger: ['blur', 'change'],
+        validator: (_rule, value, callback) => {
+          if (!sourceConnectionDefaults[form.sourceType]) {
+            callback();
+            return;
+          }
+          if (String(value || '').trim()) {
+            callback();
+            return;
+          }
+          callback(new Error('请输入库名'));
+        },
+      },
+    ],
+  };
+
+  const selectedTypeDefaults = computed(
+    () => sourceConnectionDefaults[form.sourceType] || null,
+  );
+
+  const supportsExternalConnection = computed(() =>
+    Boolean(selectedTypeDefaults.value),
+  );
+
+  const connectionTypeLabel = computed(() =>
+    form.sourceType ? sourceTypeLabels[form.sourceType] || form.sourceType : '',
+  );
+
+  const connectionHelpText = computed(() => {
+    if (form.sourceType === 'EXCEL') {
+      return 'Excel 连接只需要名称，文件导入后会自动生成表。';
+    }
+    if (!supportsExternalConnection.value) {
+      return '系统内置连接由平台自动维护，无需填写地址。';
+    }
+    return `填写主机、库名和账号即可，端口与连接地址会按 ${connectionTypeLabel.value} 自动补全。`;
+  });
+
+  function generateJdbcUrl(payload: Record<string, any>) {
+    return (
+      sourceConnectionDefaults[payload.sourceType]?.buildJdbcUrl(payload) || ''
+    );
+  }
+
+  function syncGeneratedJdbcUrl(force = false) {
+    const generated = generateJdbcUrl(form);
+    if (!generated) {
+      if (
+        force ||
+        !form.jdbcUrl ||
+        form.jdbcUrl === lastGeneratedJdbcUrl.value
+      ) {
+        form.jdbcUrl = '';
+      }
+      lastGeneratedJdbcUrl.value = '';
+      return;
+    }
+    if (
+      force ||
+      !form.jdbcUrl ||
+      form.jdbcUrl === lastGeneratedJdbcUrl.value
+    ) {
+      form.jdbcUrl = generated;
+      lastGeneratedJdbcUrl.value = generated;
+    } else if (form.jdbcUrl === generated) {
+      lastGeneratedJdbcUrl.value = generated;
+    }
+  }
+
+  function applySourceTypeDefaults(force = false) {
+    const defaults = selectedTypeDefaults.value;
+    form.configJson = mergeConfigJsonBySourceType(
+      form.sourceType,
+      form.configJson,
+    );
+    if (!defaults) {
+      if (force) {
+        form.port = undefined;
+        form.driverClassName = '';
+        form.jdbcUrl = '';
+        lastGeneratedDriverClassName.value = '';
+        lastGeneratedJdbcUrl.value = '';
+      }
+      return;
+    }
+    if (force || !form.port) {
+      form.port = defaults.defaultPort;
+    }
+    if (
+      force ||
+      !form.driverClassName ||
+      form.driverClassName === lastGeneratedDriverClassName.value
+    ) {
+      form.driverClassName = defaults.defaultDriver;
+      lastGeneratedDriverClassName.value = defaults.defaultDriver;
+    }
+    syncGeneratedJdbcUrl(force);
+  }
+
+  function resetForm(row?: any) {
+    form.id = row?.id;
+    form.sourceName = row?.sourceName || '';
+    form.sourceCode = row?.sourceCode || '';
+    form.sourceType = row?.sourceType || 'MYSQL';
+    form.accessMode = row?.accessMode || 'READ_ONLY';
+    form.driverClassName = row?.driverClassName || '';
+    form.jdbcUrl = row?.jdbcUrl || '';
+    form.host = row?.host || '';
+    form.port = row?.port;
+    form.databaseName = row?.databaseName || '';
+    form.schemaName = row?.schemaName || '';
+    form.username = row?.username || '';
+    form.password = '';
+    form.builtinFlag = row?.builtinFlag || 0;
+    form.configJson = mergeConfigJsonBySourceType(
+      form.sourceType,
+      row?.configJson || {},
+    );
+    lastGeneratedDriverClassName.value = '';
+    lastGeneratedJdbcUrl.value = '';
+    applySourceTypeDefaults(false);
+  }
+
+  watch(
+    () => form.sourceType,
+    () => applySourceTypeDefaults(true),
+  );
+
+  watch(
+    () => [
+      form.host,
+      form.port,
+      form.databaseName,
+      form.configJson?.informixServer,
+      form.configJson?.serviceName,
+    ],
+    () => syncGeneratedJdbcUrl(false),
+  );
+
+  return {
+    form,
+    rules,
+    supportsExternalConnection,
+    connectionHelpText,
+    resetForm,
+  };
+}