[MM-53968] Includes mattermost-plugin-api into the mono repo (#24235)

Include https://github.com/mattermost/mattermost-plugin-api into the mono repo

Co-authored-by: Jesse Hallam <jesse.hallam@gmail.com>
Co-authored-by: Michael Kochell <mjkochell@gmail.com>
Co-authored-by: Alejandro García Montoro <alejandro.garciamontoro@gmail.com>
Co-authored-by: Ben Schumacher <ben.schumacher@mattermost.com>
Co-authored-by: Alex Dovenmuehle <alex.dovenmuehle@mattermost.com>
Co-authored-by: Michael Kochell <6913320+mickmister@users.noreply.github.com>
Co-authored-by: Christopher Poile <cpoile@gmail.com>
Co-authored-by: İlker Göktuğ Öztürk <ilkergoktugozturk@gmail.com>
Co-authored-by: Shota Gvinepadze <wineson@gmail.com>
Co-authored-by: Ali Farooq <ali.farooq0@pm.me>
Co-authored-by: Maria A Nunez <maria.nunez@mattermost.com>
Co-authored-by: Daniel Espino García <larkox@gmail.com>
Co-authored-by: Christopher Speller <crspeller@gmail.com>
Co-authored-by: Alex Dovenmuehle <adovenmuehle@gmail.com>
Co-authored-by: Szymon Gibała <szymongib@gmail.com>
Co-authored-by: Lev <1187448+levb@users.noreply.github.com>
Co-authored-by: Jason Frerich <jason.frerich@mattermost.com>
Co-authored-by: Agniva De Sarker <agnivade@yahoo.co.in>
Co-authored-by: Artur M. Wolff <artur.m.wolff@gmail.com>
Co-authored-by: Madhav Hugar <16546715+madhavhugar@users.noreply.github.com>
Co-authored-by: Joe <security.joe@pm.me>
Co-authored-by: Ibrahim Serdar Acikgoz <serdaracikgoz86@gmail.com>
Co-authored-by: José Peso <trilopin@users.noreply.github.com>

server/public/pluginapi/experimental/panel/settings/bool_setting.go

@@ -0,0 +1,114 @@
+package settings
+
+import (
+	"errors"
+	"fmt"
+
+	"github.com/mattermost/mattermost/server/public/model"
+)
+
+type boolSetting struct {
+	baseSetting
+	store SettingStore
+}
+
+// NewBoolSetting creates a new setting input for boolean values
+func NewBoolSetting(id, title, description, dependsOn string, store SettingStore) Setting {
+	return &boolSetting{
+		baseSetting: baseSetting{
+			title:       title,
+			description: description,
+			id:          id,
+			dependsOn:   dependsOn,
+		},
+		store: store,
+	}
+}
+
+func (s *boolSetting) Set(userID string, value interface{}) error {
+	boolValue := false
+	if value == TrueString {
+		boolValue = true
+	}
+
+	err := s.store.SetSetting(userID, s.id, boolValue)
+	if err != nil {
+		return err
+	}
+
+	return nil
+}
+
+func (s *boolSetting) Get(userID string) (interface{}, error) {
+	value, err := s.store.GetSetting(userID, s.id)
+	if err != nil {
+		return "", err
+	}
+	boolValue, ok := value.(bool)
+	if !ok {
+		return "", errors.New("current value is not a bool")
+	}
+
+	stringValue := FalseString
+	if boolValue {
+		stringValue = TrueString
+	}
+
+	return stringValue, nil
+}
+
+func (s *boolSetting) GetSlackAttachments(userID, settingHandler string, disabled bool) (*model.SlackAttachment, error) {
+	title := fmt.Sprintf("Setting: %s", s.title)
+	currentValueMessage := DisabledString
+
+	actions := []*model.PostAction{}
+	if !disabled {
+		currentValue, err := s.Get(userID)
+		if err != nil {
+			return nil, err
+		}
+
+		currentTextValue := "No"
+		if currentValue == TrueString {
+			currentTextValue = "Yes"
+		}
+		currentValueMessage = fmt.Sprintf("Current value: %s", currentTextValue)
+
+		actionTrue := model.PostAction{
+			Name: "Yes",
+			Integration: &model.PostActionIntegration{
+				URL: settingHandler,
+				Context: map[string]interface{}{
+					ContextIDKey:          s.id,
+					ContextButtonValueKey: TrueString,
+				},
+			},
+		}
+
+		actionFalse := model.PostAction{
+			Name: "No",
+			Integration: &model.PostActionIntegration{
+				URL: settingHandler,
+				Context: map[string]interface{}{
+					ContextIDKey:          s.id,
+					ContextButtonValueKey: FalseString,
+				},
+			},
+		}
+		actions = []*model.PostAction{&actionTrue, &actionFalse}
+	}
+
+	text := fmt.Sprintf("%s\n%s", s.description, currentValueMessage)
+	sa := model.SlackAttachment{
+		Title:    title,
+		Text:     text,
+		Fallback: fmt.Sprintf("%s: %s", title, text),
+		Actions:  actions,
+	}
+
+	return &sa, nil
+}
+
+func (s *boolSetting) IsDisabled(foreignValue interface{}) bool {
+	return foreignValue == FalseString
+}