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* Utility functions for converting between simple IDs and GitLab Global IDs (GIDs)
* This reduces token usage for MCP agents by using simple strings instead of verbose GIDs
*/
// Define interfaces for proper typing
export interface GitLabObject {
[key: string]: unknown;
}
export interface GitLabWorkItemType {
id: string;
name: string;
}
export interface GitLabWorkItem extends GitLabObject {
id: string;
iid?: string;
title?: string;
description?: string;
state?: string;
workItemType?: GitLabWorkItemType | string;
widgets?: GitLabWidget[];
createdAt?: string;
updatedAt?: string;
closedAt?: string;
webUrl?: string;
}
export interface GitLabWidget {
type: string;
assignees?: {
nodes?: Array<{ id: string; [key: string]: unknown }>;
};
labels?: {
nodes?: Array<{ id: string; [key: string]: unknown }>;
};
milestone?: {
id: string;
[key: string]: unknown;
};
parent?: {
id: string;
[key: string]: unknown;
};
linkedItems?: {
nodes?: Array<{
linkType?: string;
workItem?: { id: string; [key: string]: unknown };
[key: string]: unknown;
}>;
};
[key: string]: unknown;
}
// Mapping of entity types to their GID prefixes
const GID_PREFIXES = {
WorkItem: "gid://gitlab/WorkItem/",
User: "gid://gitlab/User/",
Project: "gid://gitlab/Project/",
Group: "gid://gitlab/Group/",
Label: "gid://gitlab/ProjectLabel/",
Milestone: "gid://gitlab/Milestone/",
Iteration: "gid://gitlab/Iteration/",
MergeRequest: "gid://gitlab/MergeRequest/",
Pipeline: "gid://gitlab/Ci::Pipeline/",
Job: "gid://gitlab/Ci::Build/",
Variable: "gid://gitlab/Ci::Variable/",
Wiki: "gid://gitlab/Wiki/",
Note: "gid://gitlab/Note/",
Discussion: "gid://gitlab/Discussion/",
} as const;
export type EntityType = keyof typeof GID_PREFIXES;
/**
* Extract simple ID from GitLab Global ID (GID)
* @param gid - GitLab Global ID like "gid://gitlab/WorkItem/123"
* @returns Simple ID like "123"
*/
export function extractSimpleId(gid: string): string {
if (!gid || typeof gid !== "string") {
return gid; // Return as-is if not a string
}
if (gid.startsWith("gid://gitlab/")) {
const parts = gid.split("/");
return parts[parts.length - 1];
}
return gid; // If it's already a simple ID, return as-is
}
/**
* Normalize various work item GID formats to WorkItem GID
* Handles legacy types: Issue, Epic, Task, Incident, TestCase, Requirement
*
* AI agents may construct GIDs using legacy type names from general GitLab knowledge.
* This function converts them to the correct WorkItem GID format for GraphQL queries.
*
* @param gid - GID that might use legacy type (e.g., "gid://gitlab/Issue/5953")
* @returns Normalized WorkItem GID (e.g., "gid://gitlab/WorkItem/5953")
*/
export function normalizeWorkItemGid(gid: string): string {
if (!gid || typeof gid !== "string") {
return gid;
}
// Legacy work item types that should be normalized to WorkItem
const legacyTypes = ["Issue", "Epic", "Task", "Incident", "TestCase", "Requirement"];
for (const type of legacyTypes) {
const prefix = `gid://gitlab/${type}/`;
if (gid.startsWith(prefix)) {
return gid.replace(prefix, "gid://gitlab/WorkItem/");
}
}
return gid;
}
/**
* Convert simple ID to GitLab Global ID (GID)
* @param id - Simple ID like "123"
* @param entityType - Type of entity (WorkItem, User, Project, etc.)
* @returns GitLab Global ID like "gid://gitlab/WorkItem/123"
*/
export function toGid(id: string, entityType: EntityType): string {
// If it's already a GID, normalize for WorkItem type or return as-is
if (id.startsWith("gid://gitlab/")) {
if (entityType === "WorkItem") {
return normalizeWorkItemGid(id);
}
return id;
}
return GID_PREFIXES[entityType] + id;
}
/**
* Convert array of simple IDs to GIDs
* @param ids - Array of simple IDs like ["123", "456"]
* @param entityType - Type of entity
* @returns Array of GIDs like ["gid://gitlab/User/123", "gid://gitlab/User/456"]
*/
export function toGids(ids: string[], entityType: EntityType): string[] {
return ids.map(id => toGid(id, entityType));
}
/**
* Convert array of GIDs to simple IDs
* @param gids - Array of GIDs like ["gid://gitlab/User/123", "gid://gitlab/User/456"]
* @returns Array of simple IDs like ["123", "456"]
*/
export function extractSimpleIds(gids: string[]): string[] {
return gids.map(gid => extractSimpleId(gid));
}
/**
* Clean any object by converting all GID properties to simple IDs
* @param obj - Object that may contain GIDs
* @returns Object with GIDs converted to simple IDs
*/
export function cleanGidsFromObject<T>(obj: T): T {
if (!obj || typeof obj !== "object") {
return obj;
}
if (Array.isArray(obj)) {
// eslint-disable-next-line @typescript-eslint/no-unsafe-return
const cleanedArray: unknown[] = obj.map(item => cleanGidsFromObject(item));
return cleanedArray as T;
}
const cleaned: Record<string, unknown> = {};
for (const [key, value] of Object.entries(obj as Record<string, unknown>)) {
if (typeof value === "string" && value.startsWith("gid://gitlab/")) {
cleaned[key] = extractSimpleId(value);
} else if (typeof value === "object" && value !== null) {
cleaned[key] = cleanGidsFromObject(value);
} else {
cleaned[key] = value;
}
}
return cleaned as T;
}
/**
* Normalize linkType values from GitLab's snake_case to our schema's SCREAMING_SNAKE_CASE
* GitLab API returns: is_blocked_by, blocks, related
* Our schema expects: BLOCKED_BY, BLOCKS, RELATED
*/
function normalizeLinkType(linkType: string | undefined): string | undefined {
Iif (!linkType) return linkType;
const mapping: Record<string, string> = {
is_blocked_by: "BLOCKED_BY",
blocks: "BLOCKS",
related: "RELATED",
// Also handle if already uppercase (in case GitLab changes behavior)
BLOCKED_BY: "BLOCKED_BY",
BLOCKS: "BLOCKS",
RELATED: "RELATED",
};
return mapping[linkType] ?? linkType;
}
/**
* Clean work item response by converting GIDs to simple IDs
* @param workItem - Work item response from GitLab API
* @returns Work item with simple IDs
*/
export function cleanWorkItemResponse(workItem: GitLabWorkItem): GitLabWorkItem {
if (!workItem) return workItem;
const result: GitLabWorkItem = {
...workItem,
id: extractSimpleId(workItem.id),
};
// Handle workItemType safely - ALWAYS convert to simple string constant for agents
if (workItem.workItemType) {
if (typeof workItem.workItemType === "string") {
// If workItemType is already a string, keep it as-is
result.workItemType = workItem.workItemType;
} else if (workItem.workItemType.name) {
// If workItemType is an object with name, extract the name for agents
// This converts GraphQL objects like {id: "gid://...", name: "Epic"} to just "Epic"
result.workItemType = workItem.workItemType.name;
} else Eif (workItem.workItemType.id) {
// If workItemType only has ID, clean the ID but keep object structure
result.workItemType = {
...workItem.workItemType,
id: extractSimpleId(workItem.workItemType.id),
};
}
}
// Clean widgets if they contain GIDs
if (workItem.widgets) {
result.widgets = workItem.widgets.map((widget: GitLabWidget) => {
const cleanedWidget: GitLabWidget = { ...widget };
// Clean assignee IDs in ASSIGNEES widget
if (widget.type === "ASSIGNEES" && widget.assignees?.nodes) {
cleanedWidget.assignees = {
...widget.assignees,
nodes: widget.assignees.nodes.map(assignee => ({
...assignee,
id: extractSimpleId(assignee.id),
})),
};
}
// Clean label IDs in LABELS widget
if (widget.type === "LABELS" && widget.labels?.nodes) {
cleanedWidget.labels = {
...widget.labels,
nodes: widget.labels.nodes.map(label => ({
...label,
id: extractSimpleId(label.id),
})),
};
}
// Clean milestone ID in MILESTONE widget
if (widget.type === "MILESTONE" && widget.milestone?.id) {
cleanedWidget.milestone = {
...widget.milestone,
id: extractSimpleId(widget.milestone.id),
};
}
// Clean parent ID in HIERARCHY widget
if (widget.type === "HIERARCHY" && widget.parent?.id) {
cleanedWidget.parent = {
...widget.parent,
id: extractSimpleId(widget.parent.id),
};
}
// Clean linked item GIDs in LINKED_ITEMS widget and normalize linkType
if (widget.type === "LINKED_ITEMS" && widget.linkedItems?.nodes) {
cleanedWidget.linkedItems = {
...widget.linkedItems,
nodes: widget.linkedItems.nodes.map(node => ({
...node,
// Normalize linkType: GitLab returns snake_case but we use SCREAMING_SNAKE_CASE in schema
linkType: normalizeLinkType(node.linkType),
workItem: node.workItem
? { ...node.workItem, id: extractSimpleId(node.workItem.id) }
: node.workItem,
})),
};
}
return cleanedWidget;
});
}
return result;
}
/**
* Convert simple work item type names to their corresponding GIDs for GraphQL queries
* @param typeNames - Array of simple type names like ['EPIC', 'ISSUE', 'TASK']
* @param namespacePath - Namespace path to get work item types from
* @param getWorkItemTypes - Function to get work item types for the namespace
* @returns Array of work item type GIDs
*/
export async function convertTypeNamesToGids(
typeNames: string[],
namespacePath: string,
getWorkItemTypes: (path: string) => Promise<GitLabWorkItemType[]>
): Promise<string[]> {
if (!typeNames || typeNames.length === 0) {
return [];
}
// Get available work item types for this namespace
const workItemTypes = await getWorkItemTypes(namespacePath);
const resolvedTypes: string[] = [];
for (const typeName of typeNames) {
const workItemTypeObj = workItemTypes.find(
t => t.name.toUpperCase() === typeName.toUpperCase()
);
if (workItemTypeObj) {
resolvedTypes.push(workItemTypeObj.id);
} else {
console.warn(
`Work item type "${typeName}" not found in namespace "${namespacePath}". Available types: ${workItemTypes.map(t => t.name).join(", ")}`
);
}
}
if (resolvedTypes.length === 0) {
console.warn("No valid work item types found for filtering. Using no type filter.");
return [];
}
return resolvedTypes;
}
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