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package github
import (
"context"
"encoding/json"
"fmt"
"io"
ghErrors "github.com/github/github-mcp-server/pkg/errors"
"github.com/github/github-mcp-server/pkg/translations"
"github.com/google/go-github/v73/github"
"github.com/mark3labs/mcp-go/mcp"
"github.com/mark3labs/mcp-go/server"
)
// SearchRepositories creates a tool to search for GitHub repositories.
func SearchRepositories(getClient GetClientFn, t translations.TranslationHelperFunc) (tool mcp.Tool, handler server.ToolHandlerFunc) {
return mcp.NewTool("search_repositories",
mcp.WithDescription(t("TOOL_SEARCH_REPOSITORIES_DESCRIPTION", "Search for GitHub repositories")),
mcp.WithToolAnnotation(mcp.ToolAnnotation{
Title: t("TOOL_SEARCH_REPOSITORIES_USER_TITLE", "Search repositories"),
ReadOnlyHint: ToBoolPtr(true),
}),
mcp.WithString("query",
mcp.Required(),
mcp.Description("Search query"),
),
WithPagination(),
),
func(ctx context.Context, request mcp.CallToolRequest) (*mcp.CallToolResult, error) {
query, err := RequiredParam[string](request, "query")
if err != nil {
return mcp.NewToolResultError(err.Error()), nil
}
pagination, err := OptionalPaginationParams(request)
if err != nil {
return mcp.NewToolResultError(err.Error()), nil
}
opts := &github.SearchOptions{
ListOptions: github.ListOptions{
Page: pagination.Page,
PerPage: pagination.PerPage,
},
}
client, err := getClient(ctx)
if err != nil {
return nil, fmt.Errorf("failed to get GitHub client: %w", err)
}
result, resp, err := client.Search.Repositories(ctx, query, opts)
if err != nil {
return ghErrors.NewGitHubAPIErrorResponse(ctx,
fmt.Sprintf("failed to search repositories with query '%s'", query),
resp,
err,
), nil
}
defer func() { _ = resp.Body.Close() }()
if resp.StatusCode != 200 {
body, err := io.ReadAll(resp.Body)
if err != nil {
return nil, fmt.Errorf("failed to read response body: %w", err)
}
return mcp.NewToolResultError(fmt.Sprintf("failed to search repositories: %s", string(body))), nil
}
r, err := json.Marshal(result)
if err != nil {
return nil, fmt.Errorf("failed to marshal response: %w", err)
}
return mcp.NewToolResultText(string(r)), nil
}
}
// SearchCode creates a tool to search for code across GitHub repositories.
func SearchCode(getClient GetClientFn, t translations.TranslationHelperFunc) (tool mcp.Tool, handler server.ToolHandlerFunc) {
return mcp.NewTool("search_code",
mcp.WithDescription(t("TOOL_SEARCH_CODE_DESCRIPTION", "Search for code across GitHub repositories")),
mcp.WithToolAnnotation(mcp.ToolAnnotation{
Title: t("TOOL_SEARCH_CODE_USER_TITLE", "Search code"),
ReadOnlyHint: ToBoolPtr(true),
}),
mcp.WithString("query",
mcp.Required(),
mcp.Description("Search query using GitHub code search syntax"),
),
mcp.WithString("sort",
mcp.Description("Sort field ('indexed' only)"),
),
mcp.WithString("order",
mcp.Description("Sort order"),
mcp.Enum("asc", "desc"),
),
WithPagination(),
),
func(ctx context.Context, request mcp.CallToolRequest) (*mcp.CallToolResult, error) {
query, err := RequiredParam[string](request, "query")
if err != nil {
return mcp.NewToolResultError(err.Error()), nil
}
sort, err := OptionalParam[string](request, "sort")
if err != nil {
return mcp.NewToolResultError(err.Error()), nil
}
order, err := OptionalParam[string](request, "order")
if err != nil {
return mcp.NewToolResultError(err.Error()), nil
}
pagination, err := OptionalPaginationParams(request)
if err != nil {
return mcp.NewToolResultError(err.Error()), nil
}
opts := &github.SearchOptions{
Sort: sort,
Order: order,
ListOptions: github.ListOptions{
PerPage: pagination.PerPage,
Page: pagination.Page,
},
}
client, err := getClient(ctx)
if err != nil {
return nil, fmt.Errorf("failed to get GitHub client: %w", err)
}
result, resp, err := client.Search.Code(ctx, query, opts)
if err != nil {
return ghErrors.NewGitHubAPIErrorResponse(ctx,
fmt.Sprintf("failed to search code with query '%s'", query),
resp,
err,
), nil
}
defer func() { _ = resp.Body.Close() }()
if resp.StatusCode != 200 {
body, err := io.ReadAll(resp.Body)
if err != nil {
return nil, fmt.Errorf("failed to read response body: %w", err)
}
return mcp.NewToolResultError(fmt.Sprintf("failed to search code: %s", string(body))), nil
}
r, err := json.Marshal(result)
if err != nil {
return nil, fmt.Errorf("failed to marshal response: %w", err)
}
return mcp.NewToolResultText(string(r)), nil
}
}
// MinimalUser is the output type for user and organization search results.
type MinimalUser struct {
Login string `json:"login"`
ID int64 `json:"id,omitempty"`
ProfileURL string `json:"profile_url,omitempty"`
AvatarURL string `json:"avatar_url,omitempty"`
Details *UserDetails `json:"details,omitempty"` // Optional field for additional user details
}
type MinimalSearchUsersResult struct {
TotalCount int `json:"total_count"`
IncompleteResults bool `json:"incomplete_results"`
Items []MinimalUser `json:"items"`
}
func userOrOrgHandler(accountType string, getClient GetClientFn) server.ToolHandlerFunc {
return func(ctx context.Context, request mcp.CallToolRequest) (*mcp.CallToolResult, error) {
query, err := RequiredParam[string](request, "query")
if err != nil {
return mcp.NewToolResultError(err.Error()), nil
}
sort, err := OptionalParam[string](request, "sort")
if err != nil {
return mcp.NewToolResultError(err.Error()), nil
}
order, err := OptionalParam[string](request, "order")
if err != nil {
return mcp.NewToolResultError(err.Error()), nil
}
pagination, err := OptionalPaginationParams(request)
if err != nil {
return mcp.NewToolResultError(err.Error()), nil
}
opts := &github.SearchOptions{
Sort: sort,
Order: order,
ListOptions: github.ListOptions{
PerPage: pagination.PerPage,
Page: pagination.Page,
},
}
client, err := getClient(ctx)
if err != nil {
return nil, fmt.Errorf("failed to get GitHub client: %w", err)
}
searchQuery := "type:" + accountType + " " + query
result, resp, err := client.Search.Users(ctx, searchQuery, opts)
if err != nil {
return ghErrors.NewGitHubAPIErrorResponse(ctx,
fmt.Sprintf("failed to search %ss with query '%s'", accountType, query),
resp,
err,
), nil
}
defer func() { _ = resp.Body.Close() }()
if resp.StatusCode != 200 {
body, err := io.ReadAll(resp.Body)
if err != nil {
return nil, fmt.Errorf("failed to read response body: %w", err)
}
return mcp.NewToolResultError(fmt.Sprintf("failed to search %ss: %s", accountType, string(body))), nil
}
minimalUsers := make([]MinimalUser, 0, len(result.Users))
for _, user := range result.Users {
if user.Login != nil {
mu := MinimalUser{
Login: user.GetLogin(),
ID: user.GetID(),
ProfileURL: user.GetHTMLURL(),
AvatarURL: user.GetAvatarURL(),
}
minimalUsers = append(minimalUsers, mu)
}
}
minimalResp := &MinimalSearchUsersResult{
TotalCount: result.GetTotal(),
IncompleteResults: result.GetIncompleteResults(),
Items: minimalUsers,
}
if result.Total != nil {
minimalResp.TotalCount = *result.Total
}
if result.IncompleteResults != nil {
minimalResp.IncompleteResults = *result.IncompleteResults
}
r, err := json.Marshal(minimalResp)
if err != nil {
return nil, fmt.Errorf("failed to marshal response: %w", err)
}
return mcp.NewToolResultText(string(r)), nil
}
}
// SearchUsers creates a tool to search for GitHub users.
func SearchUsers(getClient GetClientFn, t translations.TranslationHelperFunc) (tool mcp.Tool, handler server.ToolHandlerFunc) {
return mcp.NewTool("search_users",
mcp.WithDescription(t("TOOL_SEARCH_USERS_DESCRIPTION", "Search for GitHub users exclusively")),
mcp.WithToolAnnotation(mcp.ToolAnnotation{
Title: t("TOOL_SEARCH_USERS_USER_TITLE", "Search users"),
ReadOnlyHint: ToBoolPtr(true),
}),
mcp.WithString("query",
mcp.Required(),
mcp.Description("Search query using GitHub users search syntax scoped to type:user"),
),
mcp.WithString("sort",
mcp.Description("Sort field by category"),
mcp.Enum("followers", "repositories", "joined"),
),
mcp.WithString("order",
mcp.Description("Sort order"),
mcp.Enum("asc", "desc"),
),
WithPagination(),
), userOrOrgHandler("user", getClient)
}
// SearchOrgs creates a tool to search for GitHub organizations.
func SearchOrgs(getClient GetClientFn, t translations.TranslationHelperFunc) (tool mcp.Tool, handler server.ToolHandlerFunc) {
return mcp.NewTool("search_orgs",
mcp.WithDescription(t("TOOL_SEARCH_ORGS_DESCRIPTION", "Search for GitHub organizations exclusively")),
mcp.WithToolAnnotation(mcp.ToolAnnotation{
Title: t("TOOL_SEARCH_ORGS_USER_TITLE", "Search organizations"),
ReadOnlyHint: ToBoolPtr(true),
}),
mcp.WithString("query",
mcp.Required(),
mcp.Description("Search query using GitHub organizations search syntax scoped to type:org"),
),
mcp.WithString("sort",
mcp.Description("Sort field by category"),
mcp.Enum("followers", "repositories", "joined"),
),
mcp.WithString("order",
mcp.Description("Sort order"),
mcp.Enum("asc", "desc"),
),
WithPagination(),
), userOrOrgHandler("org", getClient)
}