Feat: interactive issue edit command (#708)

If there are no flags passed to the `issues edit` command, it prompts
for changes to the properties like title, description, labels, etc.

This is a follow-up to <https://gitea.com/gitea/tea/pulls/506>.

Closes: <https://gitea.com/gitea/tea/issues/605>
Co-authored-by: techknowlogick <techknowlogick@noreply.gitea.com>
Reviewed-on: https://gitea.com/gitea/tea/pulls/708
Reviewed-by: techknowlogick <techknowlogick@noreply.gitea.com>
Co-authored-by: Vincent Neubauer <v.neubauer@darlor.de>
Co-committed-by: Vincent Neubauer <v.neubauer@darlor.de>

modules/interact/issue_edit.go

@@ -0,0 +1,153 @@
+// Copyright 2025 The Gitea Authors. All rights reserved.
+// SPDX-License-Identifier: MIT
+
+package interact
+
+import (
+	"slices"
+
+	"code.gitea.io/tea/modules/config"
+	"code.gitea.io/tea/modules/context"
+	"code.gitea.io/tea/modules/task"
+
+	"github.com/AlecAivazis/survey/v2"
+)
+
+// EditIssue interactively edits an issue
+func EditIssue(ctx context.TeaContext, index int64) (*task.EditIssueOption, error) {
+	var opts = task.EditIssueOption{}
+	var err error
+
+	ctx.Owner, ctx.Repo, err = promptRepoSlug(ctx.Owner, ctx.Repo)
+	if err != nil {
+		return &opts, err
+	}
+
+	c := ctx.Login.Client()
+	i, _, err := c.GetIssue(ctx.Owner, ctx.Repo, index)
+	if err != nil {
+		return &opts, err
+	}
+
+	opts = task.EditIssueOption{
+		Index:    index,
+		Title:    &i.Title,
+		Body:     &i.Body,
+		Deadline: i.Deadline,
+	}
+
+	if len(i.Assignees) != 0 {
+		for _, a := range i.Assignees {
+			opts.AddAssignees = append(opts.AddAssignees, a.UserName)
+		}
+	}
+
+	if len(i.Labels) != 0 {
+		for _, l := range i.Labels {
+			opts.AddLabels = append(opts.AddLabels, l.Name)
+		}
+	}
+
+	if i.Milestone != nil {
+		opts.Milestone = &i.Milestone.Title
+	}
+
+	if err := promptIssueEditProperties(&ctx, &opts); err != nil {
+		return &opts, err
+	}
+
+	return &opts, err
+}
+
+func promptIssueEditProperties(ctx *context.TeaContext, o *task.EditIssueOption) error {
+	var milestoneName string
+	var labelsSelected []string
+	var err error
+
+	selectableChan := make(chan (issueSelectables), 1)
+	go fetchIssueSelectables(ctx.Login, ctx.Owner, ctx.Repo, selectableChan)
+
+	// title
+	promptOpts := survey.WithValidator(survey.Required)
+	promptI := &survey.Input{Message: "Issue title:", Default: *o.Title}
+	if err = survey.AskOne(promptI, o.Title, promptOpts); err != nil {
+		return err
+	}
+
+	// description
+	promptD := NewMultiline(Multiline{
+		Message:             "Issue description:",
+		Default:             *o.Body,
+		Syntax:              "md",
+		UseEditor:           config.GetPreferences().Editor,
+		EditorAppendDefault: true,
+		EditorHideDefault:   true,
+	})
+
+	if err = survey.AskOne(promptD, o.Body); err != nil {
+		return err
+	}
+
+	// wait until selectables are fetched
+	selectables := <-selectableChan
+	if selectables.Err != nil {
+		return selectables.Err
+	}
+
+	// skip remaining props if we don't have permission to set them
+	if !selectables.Repo.Permissions.Push {
+		return nil
+	}
+
+	currAssignees := o.AddAssignees
+	newAssignees := selectables.Assignees
+
+	for _, c := range currAssignees {
+		if i := slices.Index(newAssignees, c); i != -1 {
+			newAssignees = slices.Delete(newAssignees, i, i+1)
+		}
+	}
+
+	// assignees
+	if o.AddAssignees, err = promptMultiSelect("Add Assignees:", newAssignees, "[other]"); err != nil {
+		return err
+	}
+
+	// milestone
+	if len(selectables.MilestoneList) != 0 {
+		var defaultMS string
+		if o.Milestone != nil {
+			defaultMS = *o.Milestone
+		}
+		if milestoneName, err = promptSelect("Milestone:", selectables.MilestoneList, "", "[none]", defaultMS); err != nil {
+			return err
+		}
+		o.Milestone = &milestoneName
+	}
+
+	// labels
+	if len(selectables.LabelList) != 0 {
+		promptL := &survey.MultiSelect{Message: "Labels:", Options: selectables.LabelList, VimMode: true, Default: o.AddLabels}
+		if err := survey.AskOne(promptL, &labelsSelected); err != nil {
+			return err
+		}
+		// removed labels
+		for _, l := range o.AddLabels {
+			if !slices.Contains(labelsSelected, l) {
+				o.RemoveLabels = append(o.RemoveLabels, l)
+			}
+		}
+		// added labels
+		o.AddLabels = make([]string, len(labelsSelected))
+		for i, l := range labelsSelected {
+			o.AddLabels[i] = l
+		}
+	}
+
+	// deadline
+	if o.Deadline, err = promptDatetime("Due date:"); err != nil {
+		return err
+	}
+
+	return nil
+}