feat: support group now (close #17, close #72, close #85, close #104, close #136)

Co-authored-by: quzard <1191890118@qq.com>

model/ability.go

@@ -0,0 +1,72 @@
+package model
+
+import (
+	"one-api/common"
+	"strings"
+)
+
+type Ability struct {
+	Group     string `json:"group" gorm:"type:varchar(32);primaryKey;autoIncrement:false"`
+	Model     string `json:"model" gorm:"primaryKey;autoIncrement:false"`
+	ChannelId int    `json:"channel_id" gorm:"primaryKey;autoIncrement:false;index"`
+	Enabled   bool   `json:"enabled" gorm:"default:1"`
+}
+
+func GetRandomSatisfiedChannel(group string, model string) (*Channel, error) {
+	if group == "default" {
+		return GetRandomChannel()
+	}
+	ability := Ability{}
+	var err error = nil
+	if common.UsingSQLite {
+		err = DB.Where("`group` = ? and model = ? and enabled = 1", group, model).Order("RANDOM()").Limit(1).First(&ability).Error
+	} else {
+		err = DB.Where("`group` = ? and model = ? and enabled = 1", group, model).Order("RAND()").Limit(1).First(&ability).Error
+	}
+	if err != nil {
+		return nil, err
+	}
+	channel := Channel{}
+	err = DB.First(&channel, "id = ?", ability.ChannelId).Error
+	return &channel, err
+}
+
+func (channel *Channel) AddAbilities() error {
+	models_ := strings.Split(channel.Models, ",")
+	abilities := make([]Ability, 0, len(models_))
+	for _, model := range models_ {
+		ability := Ability{
+			Group:     channel.Group,
+			Model:     model,
+			ChannelId: channel.Id,
+			Enabled:   channel.Status == common.ChannelStatusEnabled,
+		}
+		abilities = append(abilities, ability)
+	}
+	return DB.Create(&abilities).Error
+}
+
+func (channel *Channel) DeleteAbilities() error {
+	return DB.Where("channel_id = ?", channel.Id).Delete(&Ability{}).Error
+}
+
+// UpdateAbilities updates abilities of this channel.
+// Make sure the channel is completed before calling this function.
+func (channel *Channel) UpdateAbilities() error {
+	// A quick and dirty way to update abilities
+	// First delete all abilities of this channel
+	err := channel.DeleteAbilities()
+	if err != nil {
+		return err
+	}
+	// Then add new abilities
+	err = channel.AddAbilities()
+	if err != nil {
+		return err
+	}
+	return nil
+}
+
+func UpdateAbilityStatus(channelId int, status bool) error {
+	return DB.Model(&Ability{}).Where("channel_id = ?", channelId).Update("enabled", status).Error
+}