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Copy pathgists.go
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379 lines (336 loc) · 11.5 KB
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package github
import (
"context"
"encoding/json"
"fmt"
"io"
"net/http"
ghErrors "github.com/github/github-mcp-server/pkg/errors"
"github.com/github/github-mcp-server/pkg/ifc"
"github.com/github/github-mcp-server/pkg/inventory"
"github.com/github/github-mcp-server/pkg/scopes"
"github.com/github/github-mcp-server/pkg/translations"
"github.com/github/github-mcp-server/pkg/utils"
"github.com/google/go-github/v89/github"
"github.com/google/jsonschema-go/jsonschema"
"github.com/modelcontextprotocol/go-sdk/mcp"
)
// ListGists creates a tool to list gists for a user
func ListGists(t translations.TranslationHelperFunc) inventory.ServerTool {
return NewTool(
ToolsetMetadataGists,
mcp.Tool{
Name: "list_gists",
Description: t("TOOL_LIST_GISTS_DESCRIPTION", "List gists for a user"),
Annotations: &mcp.ToolAnnotations{
Title: t("TOOL_LIST_GISTS", "List Gists"),
ReadOnlyHint: true,
},
InputSchema: WithPagination(&jsonschema.Schema{
Type: "object",
Properties: map[string]*jsonschema.Schema{
"username": {
Type: "string",
Description: "GitHub username (omit for authenticated user's gists)",
},
"since": {
Type: "string",
Description: "Only gists updated after this time (ISO 8601 timestamp)",
},
},
}),
},
scopes.NoScopes(),
func(ctx context.Context, deps ToolDependencies, _ *mcp.CallToolRequest, args map[string]any) (*mcp.CallToolResult, any, error) {
username, err := OptionalParam[string](args, "username")
if err != nil {
return utils.NewToolResultError(err.Error()), nil, nil
}
since, err := OptionalParam[string](args, "since")
if err != nil {
return utils.NewToolResultError(err.Error()), nil, nil
}
pagination, err := OptionalPaginationParams(args)
if err != nil {
return utils.NewToolResultError(err.Error()), nil, nil
}
opts := &github.GistListOptions{
ListOptions: github.ListOptions{
Page: pagination.Page,
PerPage: pagination.PerPage,
},
}
// Parse since timestamp if provided
if since != "" {
sinceTime, err := parseISOTimestamp(since)
if err != nil {
return utils.NewToolResultError(fmt.Sprintf("invalid since timestamp: %v", err)), nil, nil
}
opts.Since = sinceTime
}
client, err := deps.GetClient(ctx)
if err != nil {
return utils.NewToolResultErrorFromErr("failed to get GitHub client", err), nil, nil
}
gists, resp, err := client.Gists.List(ctx, username, opts)
if err != nil {
return ghErrors.NewGitHubAPIErrorResponse(ctx, "failed to list gists", resp, err), nil, nil
}
defer func() { _ = resp.Body.Close() }()
if resp.StatusCode != http.StatusOK {
body, err := io.ReadAll(resp.Body)
if err != nil {
return utils.NewToolResultErrorFromErr("failed to read response body", err), nil, nil
}
return ghErrors.NewGitHubAPIStatusErrorResponse(ctx, "failed to list gists", resp, body), nil, nil
}
r, err := json.Marshal(gists)
if err != nil {
return utils.NewToolResultErrorFromErr("failed to marshal response", err), nil, nil
}
result := utils.NewToolResultText(string(r))
result = attachStaticIFCLabel(ctx, deps, result, ifc.LabelGistList())
return result, nil, nil
},
)
}
// GetGist creates a tool to get the content of a gist
func GetGist(t translations.TranslationHelperFunc) inventory.ServerTool {
return NewTool(
ToolsetMetadataGists,
mcp.Tool{
Name: "get_gist",
Description: t("TOOL_GET_GIST_DESCRIPTION", "Get gist content of a particular gist, by gist ID"),
Annotations: &mcp.ToolAnnotations{
Title: t("TOOL_GET_GIST", "Get Gist Content"),
ReadOnlyHint: true,
},
InputSchema: &jsonschema.Schema{
Type: "object",
Properties: map[string]*jsonschema.Schema{
"gist_id": {
Type: "string",
Description: "The ID of the gist",
},
},
Required: []string{"gist_id"},
},
},
scopes.NoScopes(),
func(ctx context.Context, deps ToolDependencies, _ *mcp.CallToolRequest, args map[string]any) (*mcp.CallToolResult, any, error) {
gistID, err := RequiredParam[string](args, "gist_id")
if err != nil {
return utils.NewToolResultError(err.Error()), nil, nil
}
client, err := deps.GetClient(ctx)
if err != nil {
return utils.NewToolResultErrorFromErr("failed to get GitHub client", err), nil, nil
}
gist, resp, err := client.Gists.Get(ctx, gistID)
if err != nil {
return ghErrors.NewGitHubAPIErrorResponse(ctx, "failed to get gist", resp, err), nil, nil
}
defer func() { _ = resp.Body.Close() }()
if resp.StatusCode != http.StatusOK {
body, err := io.ReadAll(resp.Body)
if err != nil {
return utils.NewToolResultErrorFromErr("failed to read response body", err), nil, nil
}
return ghErrors.NewGitHubAPIStatusErrorResponse(ctx, "failed to get gist", resp, body), nil, nil
}
r, err := json.Marshal(gist)
if err != nil {
return utils.NewToolResultErrorFromErr("failed to marshal response", err), nil, nil
}
result := utils.NewToolResultText(string(r))
result = attachStaticIFCLabel(ctx, deps, result, ifc.LabelGist())
return result, nil, nil
},
)
}
// CreateGist creates a tool to create a new gist
func CreateGist(t translations.TranslationHelperFunc) inventory.ServerTool {
return NewTool(
ToolsetMetadataGists,
mcp.Tool{
Name: "create_gist",
Description: t("TOOL_CREATE_GIST_DESCRIPTION", "Create a new gist"),
Annotations: &mcp.ToolAnnotations{
Title: t("TOOL_CREATE_GIST", "Create Gist"),
ReadOnlyHint: false,
},
InputSchema: &jsonschema.Schema{
Type: "object",
Properties: map[string]*jsonschema.Schema{
"description": {
Type: "string",
Description: "Description of the gist",
},
"filename": {
Type: "string",
Description: "Filename for simple single-file gist creation",
},
"content": {
Type: "string",
Description: "Content for simple single-file gist creation",
},
"public": {
Type: "boolean",
Description: "Whether the gist is public",
Default: json.RawMessage(`false`),
},
},
Required: []string{"filename", "content"},
},
},
scopes.RequireAll(scopes.Gist),
func(ctx context.Context, deps ToolDependencies, _ *mcp.CallToolRequest, args map[string]any) (*mcp.CallToolResult, any, error) {
description, err := OptionalParam[string](args, "description")
if err != nil {
return utils.NewToolResultError(err.Error()), nil, nil
}
filename, err := RequiredParam[string](args, "filename")
if err != nil {
return utils.NewToolResultError(err.Error()), nil, nil
}
content, err := RequiredParam[string](args, "content")
if err != nil {
return utils.NewToolResultError(err.Error()), nil, nil
}
public, err := OptionalParam[bool](args, "public")
if err != nil {
return utils.NewToolResultError(err.Error()), nil, nil
}
files := make(map[github.GistFilename]*github.CreateGistFile)
files[github.GistFilename(filename)] = &github.CreateGistFile{
Content: content,
}
gist := github.CreateGistRequest{
Files: files,
Public: github.Ptr(public),
Description: github.Ptr(description),
}
client, err := deps.GetClient(ctx)
if err != nil {
return utils.NewToolResultErrorFromErr("failed to get GitHub client", err), nil, nil
}
createdGist, resp, err := client.Gists.Create(ctx, gist)
if err != nil {
return ghErrors.NewGitHubAPIErrorResponse(ctx, "failed to create gist", resp, err), nil, nil
}
defer func() { _ = resp.Body.Close() }()
if resp.StatusCode != http.StatusCreated {
body, err := io.ReadAll(resp.Body)
if err != nil {
return utils.NewToolResultErrorFromErr("failed to read response body", err), nil, nil
}
return ghErrors.NewGitHubAPIStatusErrorResponse(ctx, "failed to create gist", resp, body), nil, nil
}
minimalResponse := MinimalResponse{
ID: createdGist.GetID(),
URL: createdGist.GetHTMLURL(),
}
r, err := json.Marshal(minimalResponse)
if err != nil {
return utils.NewToolResultErrorFromErr("failed to marshal response", err), nil, nil
}
return utils.NewToolResultText(string(r)), nil, nil
},
)
}
// UpdateGist creates a tool to edit an existing gist
func UpdateGist(t translations.TranslationHelperFunc) inventory.ServerTool {
return NewTool(
ToolsetMetadataGists,
mcp.Tool{
Name: "update_gist",
Description: t("TOOL_UPDATE_GIST_DESCRIPTION", "Update an existing gist"),
Annotations: &mcp.ToolAnnotations{
Title: t("TOOL_UPDATE_GIST", "Update Gist"),
ReadOnlyHint: false,
},
InputSchema: &jsonschema.Schema{
Type: "object",
Properties: map[string]*jsonschema.Schema{
"gist_id": {
Type: "string",
Description: "ID of the gist to update",
},
"description": {
Type: "string",
Description: "Updated description of the gist",
},
"filename": {
Type: "string",
Description: "Filename to update or create",
},
"content": {
Type: "string",
Description: "Content for the file",
},
},
Required: []string{"gist_id", "filename", "content"},
},
},
scopes.RequireAll(scopes.Gist),
func(ctx context.Context, deps ToolDependencies, _ *mcp.CallToolRequest, args map[string]any) (*mcp.CallToolResult, any, error) {
gistID, err := RequiredParam[string](args, "gist_id")
if err != nil {
return utils.NewToolResultError(err.Error()), nil, nil
}
description, err := OptionalParam[string](args, "description")
if err != nil {
return utils.NewToolResultError(err.Error()), nil, nil
}
filename, err := RequiredParam[string](args, "filename")
if err != nil {
return utils.NewToolResultError(err.Error()), nil, nil
}
content, err := RequiredParam[string](args, "content")
if err != nil {
return utils.NewToolResultError(err.Error()), nil, nil
}
files := make(map[github.GistFilename]*github.UpdateGistFile)
files[github.GistFilename(filename)] = &github.UpdateGistFile{
Filename: github.Ptr(filename),
Content: github.Ptr(content),
}
// Only set Description when the caller actually provided it, so
// omitting it preserves the gist's existing description. Passing an
// explicit empty string still clears it.
var descriptionPtr *string
if _, ok := args["description"]; ok {
descriptionPtr = github.Ptr(description)
}
gist := github.UpdateGistRequest{
Files: files,
Description: descriptionPtr,
}
client, err := deps.GetClient(ctx)
if err != nil {
return utils.NewToolResultErrorFromErr("failed to get GitHub client", err), nil, nil
}
updatedGist, resp, err := client.Gists.Update(ctx, gistID, gist)
if err != nil {
return ghErrors.NewGitHubAPIErrorResponse(ctx, "failed to update gist", resp, err), nil, nil
}
defer func() { _ = resp.Body.Close() }()
if resp.StatusCode != http.StatusOK {
body, err := io.ReadAll(resp.Body)
if err != nil {
return utils.NewToolResultErrorFromErr("failed to read response body", err), nil, nil
}
return ghErrors.NewGitHubAPIStatusErrorResponse(ctx, "failed to update gist", resp, body), nil, nil
}
minimalResponse := MinimalResponse{
ID: updatedGist.GetID(),
URL: updatedGist.GetHTMLURL(),
}
r, err := json.Marshal(minimalResponse)
if err != nil {
return utils.NewToolResultErrorFromErr("failed to marshal response", err), nil, nil
}
return utils.NewToolResultText(string(r)), nil, nil
},
)
}
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