feat(structure): add DDL capability matrix

apps/desktop/src/lib/tableStructureCapabilities.ts

@@ -0,0 +1,202 @@
+import type { DatabaseType } from "@/types/database";
+
+export type TableStructureDialect =
+  | "mysql"
+  | "postgres"
+  | "sqlite"
+  | "duckdb"
+  | "sqlserver"
+  | "oracle"
+  | "h2"
+  | "clickhouse"
+  | "unsupported";
+
+export interface TableStructureCapabilities {
+  dialect: TableStructureDialect;
+  createTable: boolean;
+  addColumn: boolean;
+  dropColumn: boolean;
+  renameColumn: boolean;
+  alterExistingColumn: boolean;
+  alterType: boolean;
+  alterNullability: boolean;
+  alterDefault: boolean;
+  comment: boolean;
+  createIndex: boolean;
+  dropIndex: boolean;
+  indexType: boolean;
+  indexInclude: boolean;
+  indexFilter: boolean;
+  indexComment: boolean;
+}
+
+const unsupportedCapabilities: TableStructureCapabilities = {
+  dialect: "unsupported",
+  createTable: false,
+  addColumn: false,
+  dropColumn: false,
+  renameColumn: false,
+  alterExistingColumn: false,
+  alterType: false,
+  alterNullability: false,
+  alterDefault: false,
+  comment: false,
+  createIndex: false,
+  dropIndex: false,
+  indexType: false,
+  indexInclude: false,
+  indexFilter: false,
+  indexComment: false,
+};
+
+function capabilities(overrides: Partial<TableStructureCapabilities>): TableStructureCapabilities {
+  return { ...unsupportedCapabilities, ...overrides };
+}
+
+const mysqlCapabilities = capabilities({
+  dialect: "mysql",
+  createTable: true,
+  addColumn: true,
+  dropColumn: true,
+  renameColumn: true,
+  alterExistingColumn: true,
+  alterType: true,
+  alterNullability: true,
+  alterDefault: true,
+  comment: true,
+  createIndex: true,
+  dropIndex: true,
+  indexType: true,
+});
+
+const postgresCapabilities = capabilities({
+  dialect: "postgres",
+  createTable: true,
+  addColumn: true,
+  dropColumn: true,
+  renameColumn: true,
+  alterExistingColumn: true,
+  alterType: true,
+  alterNullability: true,
+  alterDefault: true,
+  comment: true,
+  createIndex: true,
+  dropIndex: true,
+  indexType: true,
+  indexInclude: true,
+  indexFilter: true,
+  indexComment: true,
+});
+
+const redshiftCapabilities = capabilities({
+  ...postgresCapabilities,
+  createIndex: false,
+  dropIndex: false,
+  indexType: false,
+  indexInclude: false,
+  indexFilter: false,
+  indexComment: false,
+});
+
+const sqliteCapabilities = capabilities({
+  dialect: "sqlite",
+  createTable: true,
+  addColumn: true,
+  dropColumn: true,
+  renameColumn: true,
+  createIndex: true,
+  dropIndex: true,
+  indexFilter: true,
+});
+
+const duckdbCapabilities = capabilities({
+  dialect: "duckdb",
+  createTable: true,
+  addColumn: true,
+  dropColumn: true,
+  renameColumn: true,
+  createIndex: true,
+  dropIndex: true,
+});
+
+const sqlserverCapabilities = capabilities({
+  dialect: "sqlserver",
+  createTable: true,
+  addColumn: true,
+  dropColumn: true,
+  createIndex: true,
+  dropIndex: true,
+  indexType: true,
+  indexInclude: true,
+  indexFilter: true,
+});
+
+const oracleCapabilities = capabilities({
+  dialect: "oracle",
+  createTable: true,
+  addColumn: true,
+  dropColumn: true,
+  renameColumn: true,
+  alterExistingColumn: true,
+  alterType: true,
+  alterNullability: true,
+  alterDefault: true,
+  comment: true,
+  createIndex: true,
+  dropIndex: true,
+  indexType: true,
+});
+
+const h2Capabilities = capabilities({
+  dialect: "h2",
+  createTable: true,
+  addColumn: true,
+  dropColumn: true,
+  renameColumn: true,
+  alterExistingColumn: true,
+  alterType: true,
+  alterNullability: true,
+  alterDefault: true,
+  comment: true,
+  createIndex: true,
+  dropIndex: true,
+});
+
+const clickhouseCapabilities = capabilities({
+  dialect: "clickhouse",
+  createTable: true,
+  addColumn: true,
+  dropColumn: true,
+});
+
+const capabilityByType: Partial<Record<DatabaseType, TableStructureCapabilities>> = {
+  mysql: mysqlCapabilities,
+  doris: mysqlCapabilities,
+  starrocks: mysqlCapabilities,
+  goldendb: mysqlCapabilities,
+  sundb: mysqlCapabilities,
+  postgres: postgresCapabilities,
+  gaussdb: postgresCapabilities,
+  opengauss: postgresCapabilities,
+  redshift: redshiftCapabilities,
+  highgo: postgresCapabilities,
+  vastbase: postgresCapabilities,
+  kingbase: postgresCapabilities,
+  sqlite: sqliteCapabilities,
+  duckdb: duckdbCapabilities,
+  sqlserver: sqlserverCapabilities,
+  oracle: oracleCapabilities,
+  dameng: oracleCapabilities,
+  "oceanbase-oracle": oracleCapabilities,
+  h2: h2Capabilities,
+  clickhouse: clickhouseCapabilities,
+};
+
+export function getTableStructureCapabilities(dbType?: DatabaseType): TableStructureCapabilities {
+  return dbType ? (capabilityByType[dbType] ?? unsupportedCapabilities) : unsupportedCapabilities;
+}
+
+export function canEditTableStructure(dbType?: DatabaseType): boolean {
+  const caps = getTableStructureCapabilities(dbType);
+  return caps.createTable || caps.addColumn || caps.alterExistingColumn || caps.createIndex || caps.dropIndex;
+}