feat(editor): Implement Resource Mapper component (#6207)

* ⚡ scaffolding
* ⚡ finished scaffolding
* ⚡ renamed types
* ⚡ updated subtitle
* ⚡ renamed functions file, UI updates
* ⚡ query parameters fixes, ui updates, refactoring
* ⚡ fixes for credentials test, setup for error parsing
* ⚡ rlc for schema and table, error handling tweaks
* ⚡ delete operation, new options
* ⚡ columns loader
* ⚡ linter fixes
* ⚡ where clauses setup
* ⚡ logic for processing where clauses
* ⚡ select operation
* ⚡ refactoring
* ⚡ data mode for insert and update, wip
* ⚡ data mapping, insert update, skip on conflict option
* ⚡ select columns with spaces fix
* ⚡ update operation update, wip
* ⚡ finished update operation
* ⚡ upsert operation
* ⚡ ui fixes
* Copy updates.
* Copy updates.
* ⚡ option to convert empty strings to nulls, schema checks
* ⚡ UI requested updates
* ⚡ ssh setup WIP
* ⚡ fixes, ssh WIP
* ⚡ ssh fixes, credentials
* ⚡ credentials testing update
* ⚡ uncaught error fix
* ⚡ clean up
* ⚡ address in use fix
* ⚡ improved error message
* ⚡ tests setup
* ⚡ unit tests wip
* ⚡ config files clean up
* ⚡ utils unit tests
* ⚡ refactoring
* ⚡ setup for testing operations, tests for deleteTable operation
* ⚡ executeQuery and insert operations tests
* ⚡ select, update, upsert operations tests
* ⚡ runQueries tests setup
* ⚡ hint to query
* Copy updates.
* ⚡ ui fixes
* ⚡ clean up
* ⚡ error message update
* ⚡ ui update
* Minor tweaks to query params decription.
* feat(Google Sheets Node): Implement Resource mapper in Google Sheets node (#5752)
* ✨ Added initial resource mapping support in google sheets node
* ✨ Wired mapping API endpoint with node-specific logic for fetching mapping fields
* ✨ Implementing mapping fields logic for google sheets
* ✨ Updating Google Sheets execute methods to support resource mapper fields
* 🚧 Added initial version of `ResourceLocator` component
* 👌 Added `update` mode to resource mapper modes
* 👌 Addressing PR feedback
* 👌 Removing leftover const reference
* 👕 Fixing lint errors
* ⚡ singlton for conections
* ⚡ credentials test fix, clean up
* feat(Postgres Node): Add resource mapper to new version of Postgres node (#5814)
* ⚡ scaffolding
* ⚡ finished scaffolding
* ⚡ renamed types
* ⚡ updated subtitle
* ⚡ renamed functions file, UI updates
* ⚡ query parameters fixes, ui updates, refactoring
* ⚡ fixes for credentials test, setup for error parsing
* ⚡ rlc for schema and table, error handling tweaks
* ⚡ delete operation, new options
* ⚡ columns loader
* ⚡ linter fixes
* ⚡ where clauses setup
* ⚡ logic for processing where clauses
* ⚡ select operation
* ⚡ refactoring
* ⚡ data mode for insert and update, wip
* ⚡ data mapping, insert update, skip on conflict option
* ⚡ select columns with spaces fix
* ⚡ update operation update, wip
* ⚡ finished update operation
* ⚡ upsert operation
* ⚡ ui fixes
* Copy updates.
* Copy updates.
* ⚡ option to convert empty strings to nulls, schema checks
* ⚡ UI requested updates
* ⚡ ssh setup WIP
* ⚡ fixes, ssh WIP
* ⚡ ssh fixes, credentials
* ⚡ credentials testing update
* ⚡ uncaught error fix
* ⚡ clean up
* ⚡ address in use fix
* ⚡ improved error message
* ⚡ tests setup
* ⚡ unit tests wip
* ⚡ config files clean up
* ⚡ utils unit tests
* ⚡ refactoring
* ⚡ setup for testing operations, tests for deleteTable operation
* ⚡ executeQuery and insert operations tests
* ⚡ select, update, upsert operations tests
* ⚡ runQueries tests setup
* ⚡ hint to query
* Copy updates.
* ⚡ ui fixes
* ⚡ clean up
* ⚡ error message update
* ⚡ ui update
* Minor tweaks to query params decription.
* ✨ Updated Postgres node to use resource mapper component
* ✨ Implemented postgres <-> resource mapper type mapping
* ✨ Updated Postgres node execution to use resource mapper fields in v3
* 🔥 Removing unused import
---------
Co-authored-by: Michael Kret <michael.k@radency.com>
Co-authored-by: Giulio Andreini <g.andreini@gmail.com>

* feat(core): Resource editor componend P0 (#5970)
* ✨ Added inital value of mapping mode dropdown
* ✨ Finished mapping mode selector
* ✨ Finished implementing mapping mode selector
* ✨ Implemented 'Columns to match on' dropdown
* ✨ Implemented `loadOptionsDependOn` support in resource mapper
* ✨ Implemented initial version of mapping fields
* ✨ Implementing dependant fields watcher in new component setup
* ✨ Generating correct resource mapper field types. Added `supportAutoMap` to node specification and UI. Not showing fields with `display=false`. Pre-selecting matching columns if it's the only one
* ✨ Handling matching columns correctly in UI
* ✨ Saving and loading resourceMapper values in component
* ✨ Implemented proper data saving and loading
* ✨ ResourceMapper component refactor, fixing value save/load
* ✨ Refactoring MatchingColumnSelect component. Updating Sheets node to use single key match and Postgres to use multi key
* ✨ Updated Google Sheets node to work with the new UI
* ✨ Updating Postgres Node to work with new UI
* ✨ Additional loading indicator that shown if there is no mapping mode selector
* ✨ Removing hard-coded values, fixing matching columns ordering, refactoring
* ✨ Updating field names in nodes
* ✨ Fixing minor UI issues
* ✨ Implemented matching fields filter logic
* ✨ Moving loading label outside of fields list
* ✅ Added initial unit tests for resource mapper
* ✅ Finished default rendering test
* ✅ Test refactoring
* ✅ Finished unit tests
* 🔨 Updating the way i18n is used in resource mapper components
* ✔️ Fixing value to match on logic for postgres node
* ✨ Hiding mapping fields when auto-map mode is selected
* ✨ Syncing selected mapping mode between components
* ✨ Fixing dateTime input rendering and adding update check to Postgres node
* ✨ Properly handling database connections. Sending null for empty string values.
* 💄 Updated wording in the error message for non-existing rows
* ✨ Fixing issues with selected matching values
* ✔️ Updating unit tests after matching logic update
* ✨ Updating matching columns when new fields are loaded
* ✨ Defaulting to null for empty parameter values
* ✨ Allowing zero as valid value for number imputs
* ✨ Updated list of types that use datepicker as widger
* ✨ Using text inputs for time types
* ✨ Initial mapping field rework
* ✨ Added new component for mapping fields, moved bit of logic from root component to matching selector, fixing some lint errors
* ✨ Added tooltip for columns that cannot be deleted
* ✨ Saving deleted values in parameter value
* ✨ Implemented control to add/remove mapping fields
* ✨ Syncing field list with add field dropdown when changing dependent values
* ✨ Not showing removed fields in matching columns selector. Updating wording in matching columns selector description
* ✨ Implementing disabled states for add/remove all fields options
* ✨ Saving removed columns separately, updating copy
* ✨ Implemented resource mapper values validation
* ✨ Updated validation logic and error input styling
* ✨ Validating resource mapper fields when new nodes are added
* ✨ Using node field words in validation, refactoring resource mapper component
* ✨ Implemented schema syncing and add/remove all fields
* ✨ Implemented custom parameter actions
* ✨ Implemented loading indicator in parameter options
* 🔨 Removing unnecessary constants and vue props
* ✨ Handling default values properly
* ✨ Fixing validation logic
* 👕 Fixing lint errors
* ⚡ Fixing type issues
* ⚡ Not showing fields by default if `addAllFields` is set to `false`
* ✨ Implemented field type validation in resource mapper
* ✨ Updated casing in copy, removed all/remove all option from bottom menu
* ✨ Added auto mapping mode notice
* ✨ Added support for more types in validation
* ✨ Added support for enumerated values
* ✨ Fixing imports after merging
* ✨ Not showing removed fields in matching columns selector. Refactoring validation logic.
* 👕 Fixing imports
* ✔️ Updating unit tests
* ✅ Added resource mapper schema tests
* ⚡ Removing `match` from resource mapper field definition, fixing matching columns loading
* ⚡ Fixed schema merging
* ⚡ update operation return data fix
* ⚡ review
* 🐛 Added missing import
* 💄 Updating parameter actions icon based on the ui review
* 💄 Updating word capitalisation in tooltips
* 💄 Added empty state to mapping fields list
* 💄 Removing asterisk from fields, updating tooltips for matching fields
* ⚡ Preventing matching fields from being removed by 'Remove All option'
* ⚡ Not showing hidden fields in the `Add field` dropdown
* ⚡ Added support for custom matching columns labels
* ⚡ query optimization
* ⚡ fix
* ⚡ Optimizing Postgres node enumeration logic
* ⚡ Added empty state for matching columns
* ⚡ Only fully loading fields if there is no schema fetched
* ⚡ Hiding mapping fields if there is no matching columns available in the schema
* ✔️ Fixing minor issues
* ✨ Implemented runtime type validation
* 🔨 Refactoring validation logic
* ✨ Implemented required check, added more custom messages
* ✨ Skipping boolean type in required check
* Type check improvements
* ✨ Only reloading fields if dependent values actually change
* ✨ Adding item index to validation error title
* ✨ Updating Postgres fetching logic, using resource mapper mode to determine if a field can be deleted
* ✨ Resetting field values when adding them via the addAll option
* ⚡ Using minor version (2.2) for new Postgres node
* ⚡ Implemented proper date validation and type casting
* 👕 Consolidating typing
* ✅ Added unit tests for type validations
* 👌 Addressing front-end review comments
* ⚡ More refactoring to address review changes
* ⚡ Updating leftover props
* ⚡ Added fallback for ISO dates with invalid timezones
* Added timestamp to datetime test cases
* ⚡ Reseting matching columns if operation changes
* ⚡ Not forcing auto-increment fields to be filled in in Postgres node. Handling null values
* 💄 Added a custom message for invalid dates
* ⚡ Better handling of JSON values
* ⚡ Updating codemirror readonly stauts based on component property, handling objects in json validation
* Deleting leftover console.log
* ⚡ Better time validation
* ⚡ Fixing build error after merging
* 👕 Fixing lint error
* ⚡ Updating node configuration values
* ⚡ Handling postgres arrays better
* ⚡ Handling SQL array syntax
* ⚡ Updating time validation rules to include timezone
* ⚡ Sending expressions that resolve to `null` or `undefined` by the resource mapper to delete cell content in Google Sheets
* ⚡ Allowing removed fields to be selected for match
* ⚡ Updated the query for fetching unique columns and primary keys
* ⚡ Optimizing the unique query
* ⚡ Setting timezone to all parsed dates
* ⚡ Addressing PR review feedback
* ⚡ Configuring Sheets node for production, minor vue component update
* New cases added to the TypeValidation test.
* ✅ Tweaking validation rules for arrays/objects and updating test cases
---------
Co-authored-by: Michael Kret <michael.k@radency.com>
Co-authored-by: Giulio Andreini <g.andreini@gmail.com>

packages/nodes-base/nodes/Postgres/v2/helpers/utils.ts

@@ -1,9 +1,10 @@
-import type { IDataObject, INode, INodeExecutionData } from 'n8n-workflow';
+import type { IDataObject, INode, INodeExecutionData, INodePropertyOptions } from 'n8n-workflow';
 import { NodeOperationError } from 'n8n-workflow';
 
 import type {
 	ColumnInfo,
 	ConstructExecutionMetaData,
+	EnumInfo,
 	PgpClient,
 	PgpDatabase,
 	QueryMode,
@@ -13,6 +14,8 @@ import type {
 	WhereClause,
 } from './interfaces';
 
+const ENUM_VALUES_REGEX = /\{(.+?)\}/gm;
+
 export function wrapData(data: IDataObject | IDataObject[]): INodeExecutionData[] {
 	if (!Array.isArray(data)) {
 		return [{ json: data }];
@@ -324,13 +327,60 @@ export async function getTableSchema(
 	table: string,
 ): Promise<ColumnInfo[]> {
 	const columns = await db.any(
-		'SELECT column_name, data_type, is_nullable FROM information_schema.columns WHERE table_schema = $1 AND table_name = $2',
+		'SELECT column_name, data_type, is_nullable, udt_name, column_default FROM information_schema.columns WHERE table_schema = $1 AND table_name = $2',
 		[schema, table],
 	);
 
 	return columns;
 }
 
+export async function uniqueColumns(db: PgpDatabase, table: string) {
+	// Using the modified query from https://wiki.postgresql.org/wiki/Retrieve_primary_key_columns
+	const unique = await db.any(
+		`
+		SELECT DISTINCT a.attname
+			FROM pg_index i JOIN pg_attribute a ON a.attrelid = i.indrelid AND a.attnum = ANY(i.indkey)
+		WHERE i.indrelid = quote_ident($1)::regclass
+			AND (i.indisprimary OR i.indisunique);
+		`,
+		[table],
+	);
+	return unique as IDataObject[];
+}
+
+export async function getEnums(db: PgpDatabase): Promise<EnumInfo[]> {
+	const enumsData = await db.any(
+		'SELECT pg_type.typname, pg_enum.enumlabel FROM pg_type JOIN pg_enum ON pg_enum.enumtypid = pg_type.oid;',
+	);
+	return enumsData as EnumInfo[];
+}
+
+export function getEnumValues(enumInfo: EnumInfo[], enumName: string): INodePropertyOptions[] {
+	return enumInfo.reduce((acc, current) => {
+		if (current.typname === enumName) {
+			acc.push({ name: current.enumlabel, value: current.enumlabel });
+		}
+		return acc;
+	}, [] as INodePropertyOptions[]);
+}
+
+export async function doesRowExist(
+	db: PgpDatabase,
+	schema: string,
+	table: string,
+	values: string[],
+): Promise<boolean> {
+	const where = [];
+	for (let i = 3; i < 3 + values.length; i += 2) {
+		where.push(`$${i}:name=$${i + 1}`);
+	}
+	const exists = await db.any(
+		`SELECT EXISTS(SELECT 1 FROM $1:name.$2:name WHERE ${where.join(' AND ')})`,
+		[schema, table, ...values],
+	);
+	return exists[0].exists;
+}
+
 export function checkItemAgainstSchema(
 	node: INode,
 	item: IDataObject,