Implement notification subcommands (#389)

- [x] enhance notification listing
  - add `--states` and `--type` filters
  - toggle per-user or per-repo listing via `--mine` flag
  - print more fields
- [x] add subcommands to mark notifications as read, unread, pinned, unpinned. operates on
  - all notifications matching the `--state` and `--mine` filter flags, or
  - a notification specified by ID.
- [ ] ~~add a `--fields` flag for notifications listing.~~ *not in this PR*
- [ ] ~~interactive mode~~ *not in this PR*. this would go well together with #324

fixes #243, fixes #155

based on initial work in #283 and #386, but opening a new PR for @6543 to review as I changed quite a lot

---

### ⚠️ breaking ⚠️
- `tea notifications --all` has moved to `tea notifications --mine`
- `tea notifications` now only works with the context of a remote repo.
  To run this outside of a local git dir, run either `tea n --mine` or `tea n --repo <my/repo>`

---

Co-authored-by: Karl Heinz Marbaise <kama@soebes.de>
Co-authored-by: 6543 <6543@obermui.de>
Co-authored-by: Norwin Roosen <git@nroo.de>
Reviewed-on: https://gitea.com/gitea/tea/pulls/389
Reviewed-by: 6543 <6543@obermui.de>
Reviewed-by: Alexey 〒erentyev <axifive@noreply.gitea.io>
Co-authored-by: Norwin <noerw@noreply.gitea.io>
Co-committed-by: Norwin <noerw@noreply.gitea.io>

cmd/notifications.go

@@ -5,11 +5,8 @@
 package cmd
 
 import (
-	"code.gitea.io/tea/cmd/flags"
-	"code.gitea.io/tea/modules/context"
-	"code.gitea.io/tea/modules/print"
+	"code.gitea.io/tea/cmd/notifications"
 
-	"code.gitea.io/sdk/gitea"
 	"github.com/urfave/cli/v2"
 )
 
@@ -19,65 +16,14 @@ var CmdNotifications = cli.Command{
 	Aliases:     []string{"notification", "n"},
 	Category:    catHelpers,
 	Usage:       "Show notifications",
-	Description: "Show notifications, by default based of the current repo and unread one",
-	Action:      runNotifications,
-	Flags: append([]cli.Flag{
-		&cli.BoolFlag{
-			Name:    "all",
-			Aliases: []string{"a"},
-			Usage:   "show all notifications of related gitea instance",
-		},
-		&cli.BoolFlag{
-			Name:    "read",
-			Aliases: []string{"rd"},
-			Usage:   "show read notifications instead unread",
-		},
-		&cli.BoolFlag{
-			Name:    "pinned",
-			Aliases: []string{"pd"},
-			Usage:   "show pinned notifications instead unread",
-		},
-		&flags.PaginationPageFlag,
-		&flags.PaginationLimitFlag,
-	}, flags.AllDefaultFlags...),
-}
-
-func runNotifications(cmd *cli.Context) error {
-	var news []*gitea.NotificationThread
-	var err error
-
-	ctx := context.InitCommand(cmd)
-	client := ctx.Login.Client()
-
-	listOpts := ctx.GetListOptions()
-	if listOpts.Page == 0 {
-		listOpts.Page = 1
-	}
-
-	var status []gitea.NotifyStatus
-	if ctx.Bool("read") {
-		status = []gitea.NotifyStatus{gitea.NotifyStatusRead}
-	}
-	if ctx.Bool("pinned") {
-		status = append(status, gitea.NotifyStatusPinned)
-	}
-
-	if ctx.Bool("all") {
-		news, _, err = client.ListNotifications(gitea.ListNotificationOptions{
-			ListOptions: listOpts,
-			Status:      status,
-		})
-	} else {
-		ctx.Ensure(context.CtxRequirement{RemoteRepo: true})
-		news, _, err = client.ListRepoNotifications(ctx.Owner, ctx.Repo, gitea.ListNotificationOptions{
-			ListOptions: listOpts,
-			Status:      status,
-		})
-	}
-	if err != nil {
-		return err
-	}
-
-	print.NotificationsList(news, ctx.Output, ctx.Bool("all"))
-	return nil
+	Description: "Show notifications, by default based on the current repo if available",
+	Action:      notifications.RunNotificationsList,
+	Subcommands: []*cli.Command{
+		&notifications.CmdNotificationsList,
+		&notifications.CmdNotificationsMarkRead,
+		&notifications.CmdNotificationsMarkUnread,
+		&notifications.CmdNotificationsMarkPinned,
+		&notifications.CmdNotificationsUnpin,
+	},
+	Flags: notifications.CmdNotificationsList.Flags,
 }