feat(boards): ✨ Implement azdo boards work-item relation add command

docs/azdo_boards_work-item.md

@@ -7,6 +7,7 @@ Work with Azure Boards work items.
 * [azdo boards work-item create](./azdo_boards_work-item_create.md)
 * [azdo boards work-item delete](./azdo_boards_work-item_delete.md)
 * [azdo boards work-item list](./azdo_boards_work-item_list.md)
+* [azdo boards work-item relation](./azdo_boards_work-item_relation.md)
 * [azdo boards work-item show](./azdo_boards_work-item_show.md)
 * [azdo boards work-item update](./azdo_boards_work-item_update.md)
 

docs/azdo_boards_work-item_relation.md

@@ -0,0 +1,11 @@
+## Command `azdo boards work-item relation`
+
+Work with Azure Boards work item relations.
+
+### Available commands
+
+* [azdo boards work-item relation add](./azdo_boards_work-item_relation_add.md)
+
+### See also
+
+* [azdo boards work-item](./azdo_boards_work-item.md)

docs/azdo_boards_work-item_relation_add.md

@@ -0,0 +1,63 @@
+## Command `azdo boards work-item relation add`
+
+```
+azdo boards work-item relation add [ORG:]PROJECT/ID [flags]
+```
+
+Attach one or more relations to an existing work item. The relation type
+must be one of the friendly names returned by 'list-type'. Targets can
+be other work items (by ID) or arbitrary artifact URLs.
+
+
+### Options
+
+
+* `-q`, `--jq` `expression`
+
+	Filter JSON output using a jq expression
+
+* `--json` `fields`
+
+	Output JSON with the specified fields. Prefix a field with '-' to exclude it.
+
+* `--relation-type` `string`
+
+	Relation type (friendly name, e.g. parent, child, related).
+
+* `--target-id` `stringArray`
+
+	Target work item ID (repeatable; comma-separated values accepted).
+
+* `--target-url` `stringArray`
+
+	Target artifact URL (repeatable; comma-separated values accepted).
+
+* `-t`, `--template` `string`
+
+	Format JSON output using a Go template; see "azdo help formatting"
+
+
+### ALIASES
+
+- `a`
+
+### JSON Fields
+
+`_links`, `commentVersionRef`, `fields`, `id`, `relations`, `rev`, `url`
+
+### Examples
+
+```bash
+# Add a parent relation to another work item
+azdo boards work-item relation add Fabrikam/1234 --relation-type parent --target-id 5678
+
+# Add a relation to multiple work items
+azdo boards work-item relation add Fabrikam/1234 --relation-type related --target-id 5678,5679
+
+# Add an artifact relation
+azdo boards work-item relation add Fabrikam/1234 --relation-type artifact --target-url https://example.com/release
+```
+
+### See also
+
+* [azdo boards work-item relation](./azdo_boards_work-item_relation.md)

docs/azdo_help_reference.md

@@ -313,6 +313,29 @@ Aliases
 ls, l
 ```
 
+#### `azdo boards work-item relation <command>`
+
+Work with Azure Boards work item relations.
+
+##### `azdo boards work-item relation add [ORG:]PROJECT/ID [flags]`
+
+Add a relation(s) to a work item.
+
+```
+-q, --jq expression            Filter JSON output using a jq expression
+    --json fields[=*]          Output JSON with the specified fields. Prefix a field with '-' to exclude it.
+    --relation-type string     Relation type (friendly name, e.g. parent, child, related).
+    --target-id stringArray    Target work item ID (repeatable; comma-separated values accepted).
+    --target-url stringArray   Target artifact URL (repeatable; comma-separated values accepted).
+-t, --template string          Format JSON output using a Go template; see "azdo help formatting"
+```
+
+Aliases
+
+```
+a
+```
+
 #### `azdo boards work-item show [ORG:]PROJECT/ID [flags]`
 
 Show work item details

internal/cmd/boards/workitem/relation/add/add.go

@@ -0,0 +1,184 @@
+package add
+
+import (
+	"fmt"
+	"strconv"
+
+	"github.com/MakeNowJust/heredoc/v2"
+	"github.com/microsoft/azure-devops-go-api/azuredevops/v7/webapi"
+	"github.com/microsoft/azure-devops-go-api/azuredevops/v7/workitemtracking"
+	"github.com/spf13/cobra"
+
+	"github.com/tmeckel/azdo-cli/internal/cmd/boards/workitem/relation/shared"
+	"github.com/tmeckel/azdo-cli/internal/cmd/util"
+	"github.com/tmeckel/azdo-cli/internal/types"
+)
+
+type addOptions struct {
+	targetArg string
+
+	relationType string   // --relation-type
+	targetIDs    []string // --target-id (repeatable; comma-separated also accepted)
+	targetURLs   []string // --target-url (repeatable; comma-separated also accepted)
+
+	exporter util.Exporter
+}
+
+func NewCmd(ctx util.CmdContext) *cobra.Command {
+	opts := &addOptions{}
+
+	cmd := &cobra.Command{
+		Use:     "add [ORG:]PROJECT/ID",
+		Aliases: []string{"a"},
+		Short:   "Add a relation(s) to a work item.",
+		Long: heredoc.Doc(`
+			Attach one or more relations to an existing work item. The relation type
+			must be one of the friendly names returned by 'list-type'. Targets can
+			be other work items (by ID) or arbitrary artifact URLs.
+		`),
+		Example: heredoc.Doc(`
+			# Add a parent relation to another work item
+			azdo boards work-item relation add Fabrikam/1234 --relation-type parent --target-id 5678
+
+			# Add a relation to multiple work items
+			azdo boards work-item relation add Fabrikam/1234 --relation-type related --target-id 5678,5679
+
+			# Add an artifact relation
+			azdo boards work-item relation add Fabrikam/1234 --relation-type artifact --target-url https://example.com/release
+		`),
+		Args: util.ExactArgs(1, "project/source work item target required"),
+		RunE: func(cmd *cobra.Command, args []string) error {
+			opts.targetArg = args[0]
+			return runAdd(ctx, opts)
+		},
+	}
+
+	cmd.Flags().StringVar(&opts.relationType, "relation-type", "", "Relation type (friendly name, e.g. parent, child, related).")
+	cmd.Flags().StringArrayVar(&opts.targetIDs, "target-id", nil, "Target work item ID (repeatable; comma-separated values accepted).")
+	cmd.Flags().StringArrayVar(&opts.targetURLs, "target-url", nil, "Target artifact URL (repeatable; comma-separated values accepted).")
+
+	util.AddJSONFlags(cmd, &opts.exporter, []string{"id", "rev", "fields", "url", "_links", "relations", "commentVersionRef"})
+
+	return cmd
+}
+
+func runAdd(cmdCtx util.CmdContext, opts *addOptions) error {
+	ios, err := cmdCtx.IOStreams()
+	if err != nil {
+		return err
+	}
+	ios.StartProgressIndicator()
+	defer ios.StopProgressIndicator()
+
+	scope, err := util.ParseProjectTargetWithDefaultOrganization(cmdCtx, opts.targetArg)
+	if err != nil {
+		return util.FlagErrorWrap(err)
+	}
+
+	id, err := strconv.Atoi(scope.Targets[0])
+	if err != nil || id <= 0 {
+		return util.FlagErrorf("work item ID must be a positive integer; got %q", scope.Targets[0])
+	}
+
+	targetIDs, err := shared.SplitAndTrimCSV(opts.targetIDs)
+	if err != nil {
+		return util.FlagErrorWrap(err)
+	}
+	targetURLs, err := shared.SplitAndTrimCSV(opts.targetURLs)
+	if err != nil {
+		return util.FlagErrorWrap(err)
+	}
+
+	if len(targetIDs) == 0 && len(targetURLs) == 0 {
+		return util.FlagErrorf("--target-id or --target-url must be provided")
+	}
+	if len(targetIDs) > 0 && len(targetURLs) > 0 {
+		return util.FlagErrorf("--target-id and --target-url are mutually exclusive; supply only one")
+	}
+	for _, tid := range targetIDs {
+		n, err := strconv.Atoi(tid)
+		if err != nil || n <= 0 {
+			return util.FlagErrorf("target work item ID must be a positive integer; got %q", tid)
+		}
+	}
+
+	wit, err := cmdCtx.ClientFactory().WorkItemTracking(cmdCtx.Context(), scope.Organization)
+	if err != nil {
+		return fmt.Errorf("failed to create work item tracking client: %w", err)
+	}
+
+	relRefName, err := shared.ResolveRelationType(cmdCtx.Context(), wit, opts.relationType)
+	if err != nil {
+		return util.FlagErrorWrap(err)
+	}
+
+	// Resolve target IDs to URLs.
+	targetURLsResolved := []string{}
+	for _, tid := range targetIDs {
+		n, _ := strconv.Atoi(tid)
+		target, err := wit.GetWorkItem(cmdCtx.Context(), workitemtracking.GetWorkItemArgs{
+			Project: types.ToPtr(scope.Project),
+			Id:      &n,
+		})
+		if err != nil {
+			return fmt.Errorf("failed to resolve target work item %d: %w", n, err)
+		}
+		if target == nil || target.Url == nil || *target.Url == "" {
+			return fmt.Errorf("target work item %d has no URL; cannot create relation", n)
+		}
+		targetURLsResolved = append(targetURLsResolved, *target.Url)
+	}
+	targetURLsResolved = append(targetURLsResolved, targetURLs...)
+
+	add := webapi.OperationValues.Add
+	doc := []webapi.JsonPatchOperation{}
+	for _, u := range targetURLsResolved {
+		p := "/relations/-"
+		doc = append(doc, webapi.JsonPatchOperation{
+			Op:    &add,
+			Path:  &p,
+			Value: map[string]any{"rel": relRefName, "url": u},
+		})
+	}
+
+	_, err = wit.UpdateWorkItem(cmdCtx.Context(), workitemtracking.UpdateWorkItemArgs{
+		Project:  types.ToPtr(scope.Project),
+		Document: &doc,
+		Id:       &id,
+	})
+	if err != nil {
+		return fmt.Errorf("failed to update work item %d: %w", id, err)
+	}
+
+	// Re-fetch with expand=All to populate relations.
+	expand := workitemtracking.WorkItemExpandValues.All
+	populated, err := wit.GetWorkItem(cmdCtx.Context(), workitemtracking.GetWorkItemArgs{
+		Project: types.ToPtr(scope.Project),
+		Id:      &id,
+		Expand:  &expand,
+	})
+	if err != nil {
+		return fmt.Errorf("failed to get work item %d: %w", id, err)
+	}
+
+	if err := shared.PopulateFriendlyNames(cmdCtx.Context(), wit, populated); err != nil {
+		return err
+	}
+
+	if opts.exporter != nil {
+		return opts.exporter.Write(ios, populated)
+	}
+	tp, err := cmdCtx.Printer("list")
+	if err != nil {
+		return err
+	}
+	tp.AddColumns("TYPE", "URL")
+	if populated.Relations != nil {
+		for _, rel := range *populated.Relations {
+			tp.AddField(types.GetValue(rel.Rel, ""))
+			tp.AddField(types.GetValue(rel.Url, ""))
+			tp.EndRow()
+		}
+	}
+	return tp.Render()
+}