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feat(params): add structured argument binding helper

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Add params.Bind, which unmarshals a tool call's map[string]any args into a
typed struct via JSON round-trip so JSON numbers land in the correct Go
numeric field types, and enforces `required:"true"` struct tags with clear
errors. Migrate the branch, tree, and file repo handlers to use it instead
of repeated args["x"].(string)/!ok extraction, preserving existing
validation behavior for each field.

Co-Authored-By: Codet <codet@commitgo.dev> (GPT-5-Codex)
This commit is contained in:
Lunny Xiao
2026-08-24 00:14:34 -07:00
parent 815a0e26aa
commit b22ee74148
5 changed files with 288 additions and 117 deletions
Download Patch File Download Diff File Expand all files Collapse all files
operation/repo/branch.go
+29 -32
View File
@@ -69,28 +69,26 @@ func init() {
})
}
type createBranchArgs struct {
Owner string `json:"owner" required:"true"`
Repo string `json:"repo" required:"true"`
Branch string `json:"branch" required:"true"`
OldBranch string `json:"old_branch"`
}
func CreateBranchFn(ctx context.Context, args map[string]any) (*mcp.CallToolResult, error) {
owner, err := params.GetString(args, "owner")
if err != nil {
var in createBranchArgs
if err := params.Bind(args, &in); err != nil {
return to.ErrorResult(err)
}
repo, err := params.GetString(args, "repo")
if err != nil {
return to.ErrorResult(err)
}
branch, err := params.GetString(args, "branch")
if err != nil {
return to.ErrorResult(err)
}
oldBranch, _ := args["old_branch"].(string)
client, err := gitea.ClientFromContext(ctx)
if err != nil {
return to.ErrorResult(fmt.Errorf("get gitea client err: %v", err))
}
_, _, err = client.Repositories.CreateBranch(ctx, owner, repo, gitea_sdk.CreateBranchOption{
BranchName: branch,
OldBranchName: oldBranch,
_, _, err = client.Repositories.CreateBranch(ctx, in.Owner, in.Repo, gitea_sdk.CreateBranchOption{
BranchName: in.Branch,
OldBranchName: in.OldBranch,
})
if err != nil {
return to.ErrorResult(fmt.Errorf("create branch error: %v", err))
@@ -99,24 +97,22 @@ func CreateBranchFn(ctx context.Context, args map[string]any) (*mcp.CallToolResu
return to.TextResult("Branch Created")
}
type deleteBranchArgs struct {
Owner string `json:"owner" required:"true"`
Repo string `json:"repo" required:"true"`
Branch string `json:"branch" required:"true"`
}
func DeleteBranchFn(ctx context.Context, args map[string]any) (*mcp.CallToolResult, error) {
owner, err := params.GetString(args, "owner")
if err != nil {
return to.ErrorResult(err)
}
repo, err := params.GetString(args, "repo")
if err != nil {
return to.ErrorResult(err)
}
branch, err := params.GetString(args, "branch")
if err != nil {
var in deleteBranchArgs
if err := params.Bind(args, &in); err != nil {
return to.ErrorResult(err)
}
client, err := gitea.ClientFromContext(ctx)
if err != nil {
return to.ErrorResult(fmt.Errorf("get gitea client err: %v", err))
}
_, _, err = client.Repositories.DeleteRepoBranch(ctx, owner, repo, branch)
_, _, err = client.Repositories.DeleteRepoBranch(ctx, in.Owner, in.Repo, in.Branch)
if err != nil {
return to.ErrorResult(fmt.Errorf("delete branch error: %v", err))
}
@@ -124,13 +120,14 @@ func DeleteBranchFn(ctx context.Context, args map[string]any) (*mcp.CallToolResu
return to.TextResult("Branch Deleted")
}
type listBranchesArgs struct {
Owner string `json:"owner" required:"true"`
Repo string `json:"repo" required:"true"`
}
func ListBranchesFn(ctx context.Context, args map[string]any) (*mcp.CallToolResult, error) {
owner, err := params.GetString(args, "owner")
if err != nil {
return to.ErrorResult(err)
}
repo, err := params.GetString(args, "repo")
if err != nil {
var in listBranchesArgs
if err := params.Bind(args, &in); err != nil {
return to.ErrorResult(err)
}
page, pageSize := params.GetPagination(args, 30)
@@ -144,7 +141,7 @@ func ListBranchesFn(ctx context.Context, args map[string]any) (*mcp.CallToolResu
if err != nil {
return to.ErrorResult(fmt.Errorf("get gitea client err: %v", err))
}
branches, _, err := client.Repositories.ListRepoBranches(ctx, owner, repo, opt)
branches, _, err := client.Repositories.ListRepoBranches(ctx, in.Owner, in.Repo, opt)
if err != nil {
return to.ErrorResult(fmt.Errorf("list branches error: %v", err))
}