refactor!: reorganize structure

src/index.ts

@@ -6,13 +6,14 @@ export type {
   DomainOptionsCreate,
   DropDomain,
   RenameDomain,
-} from './operations/domainsTypes';
+} from './operations/domains';
 export type {
   CreateExtension,
   CreateExtensionOptions,
   DropExtension,
   Extension,
-} from './operations/extensionsTypes';
+  StringExtension,
+} from './operations/extensions';
 export type {
   CreateFunction,
   DropFunction,

src/operations/domains/alterDomain.ts

@@ -0,0 +1,49 @@
+import type { MigrationOptions } from '../../types';
+import { escapeValue } from '../../utils';
+import type { Name } from '../generalTypes';
+import type { DomainOptions } from './shared';
+
+export interface DomainOptionsAlter extends DomainOptions {
+  allowNull?: boolean;
+}
+
+export type AlterDomain = (
+  domainName: Name,
+  domainOptions: DomainOptionsAlter
+) => string | string[];
+
+export function alterDomain(mOptions: MigrationOptions): AlterDomain {
+  const _alter: AlterDomain = (domainName, options) => {
+    const {
+      default: defaultValue,
+      notNull,
+      allowNull,
+      check,
+      constraintName,
+    } = options;
+
+    const actions: string[] = [];
+
+    if (defaultValue === null) {
+      actions.push('DROP DEFAULT');
+    } else if (defaultValue !== undefined) {
+      actions.push(`SET DEFAULT ${escapeValue(defaultValue)}`);
+    }
+
+    if (notNull) {
+      actions.push('SET NOT NULL');
+    } else if (notNull === false || allowNull) {
+      actions.push('DROP NOT NULL');
+    }
+
+    if (check) {
+      actions.push(
+        `${constraintName ? `CONSTRAINT ${mOptions.literal(constraintName)} ` : ''}CHECK (${check})`
+      );
+    }
+
+    return `${actions.map((action) => `ALTER DOMAIN ${mOptions.literal(domainName)} ${action}`).join(';\n')};`;
+  };
+
+  return _alter;
+}

src/operations/domains/createDomain.ts

@@ -0,0 +1,67 @@
+import type { MigrationOptions } from '../../types';
+import { applyType, escapeValue } from '../../utils';
+import type { DropOptions, Name, Type } from './../generalTypes';
+import { dropDomain } from './dropDomain';
+import type { DomainOptions } from './shared';
+
+export interface DomainOptionsCreate extends DomainOptions {
+  collation?: string;
+}
+
+type CreateDomainFn = (
+  domainName: Name,
+  type: Type,
+  domainOptions?: DomainOptionsCreate & DropOptions
+) => string | string[];
+
+export type CreateDomain = CreateDomainFn & { reverse: CreateDomainFn };
+
+export function createDomain(mOptions: MigrationOptions): CreateDomain {
+  const _create: CreateDomain = (domainName, type, options = {}) => {
+    const {
+      default: defaultValue,
+      collation,
+      notNull,
+      check,
+      constraintName,
+    } = options;
+
+    const constraints: string[] = [];
+
+    if (collation) {
+      constraints.push(`COLLATE ${collation}`);
+    }
+
+    if (defaultValue !== undefined) {
+      constraints.push(`DEFAULT ${escapeValue(defaultValue)}`);
+    }
+
+    if (notNull && check) {
+      throw new Error('"notNull" and "check" can\'t be specified together');
+    } else if (notNull || check) {
+      if (constraintName) {
+        constraints.push(`CONSTRAINT ${mOptions.literal(constraintName)}`);
+      }
+
+      if (notNull) {
+        constraints.push('NOT NULL');
+      } else if (check) {
+        constraints.push(`CHECK (${check})`);
+      }
+    }
+
+    const constraintsStr = constraints.length
+      ? ` ${constraints.join(' ')}`
+      : '';
+
+    const typeStr = applyType(type, mOptions.typeShorthands).type;
+    const domainNameStr = mOptions.literal(domainName);
+
+    return `CREATE DOMAIN ${domainNameStr} AS ${typeStr}${constraintsStr};`;
+  };
+
+  _create.reverse = (domainName, type, options) =>
+    dropDomain(mOptions)(domainName, options);
+
+  return _create;
+}

src/operations/domains/dropDomain.ts

@@ -0,0 +1,21 @@
+import type { MigrationOptions } from '../../types';
+import type { DropOptions, Name } from './../generalTypes';
+
+export type DropDomain = (
+  domainName: Name,
+  dropOptions?: DropOptions
+) => string | string[];
+
+export function dropDomain(mOptions: MigrationOptions): DropDomain {
+  const _drop: DropDomain = (domainName, options = {}) => {
+    const { ifExists, cascade } = options;
+
+    const ifExistsStr = ifExists ? ' IF EXISTS' : '';
+    const cascadeStr = cascade ? ' CASCADE' : '';
+    const domainNameStr = mOptions.literal(domainName);
+
+    return `DROP DOMAIN${ifExistsStr} ${domainNameStr}${cascadeStr};`;
+  };
+
+  return _drop;
+}

src/operations/domains/index.ts

@@ -0,0 +1,5 @@
+export * from './alterDomain';
+export * from './createDomain';
+export * from './dropDomain';
+export * from './renameDomain';
+export * from './shared';

src/operations/domains/renameDomain.ts

@@ -0,0 +1,23 @@
+import type { MigrationOptions } from '../../types';
+import type { Name } from '../generalTypes';
+
+type RenameDomainFn = (
+  oldDomainName: Name,
+  newDomainName: Name
+) => string | string[];
+
+export type RenameDomain = RenameDomainFn & { reverse: RenameDomainFn };
+
+export function renameDomain(mOptions: MigrationOptions): RenameDomain {
+  const _rename: RenameDomain = (domainName, newDomainName) => {
+    const domainNameStr = mOptions.literal(domainName);
+    const newDomainNameStr = mOptions.literal(newDomainName);
+
+    return `ALTER DOMAIN ${domainNameStr} RENAME TO ${newDomainNameStr};`;
+  };
+
+  _rename.reverse = (domainName, newDomainName) =>
+    _rename(newDomainName, domainName);
+
+  return _rename;
+}

src/operations/domains/shared.ts

@@ -0,0 +1,11 @@
+import type { Value } from '../generalTypes';
+
+export interface DomainOptions {
+  default?: Value;
+
+  notNull?: boolean;
+
+  check?: string;
+
+  constraintName?: string;
+}