feat: auto分组

model/cache.go

@@ -3,12 +3,16 @@ package model
 import (
 	"errors"
 	"fmt"
+	"log"
 	"math/rand"
 	"one-api/common"
+	"one-api/setting"
 	"sort"
 	"strings"
 	"sync"
 	"time"
+
+	"github.com/gin-gonic/gin"
 )
 
 var group2model2channels map[string]map[string][]*Channel
@@ -75,7 +79,39 @@ func SyncChannelCache(frequency int) {
 	}
 }
 
-func CacheGetRandomSatisfiedChannel(group string, model string, retry int) (*Channel, error) {
+func CacheGetRandomSatisfiedChannel(c *gin.Context, group string, model string, retry int) (*Channel, string, error) {
+	var channel *Channel
+	var err error
+	selectGroup := group
+	if group == "auto" {
+		if len(setting.AutoGroups) == 0 {
+			return nil, selectGroup, errors.New("auto groups is not enabled")
+		}
+		for _, autoGroup := range setting.AutoGroups {
+			log.Printf("autoGroup: %s", autoGroup)
+			channel, _ = getRandomSatisfiedChannel(autoGroup, model, retry)
+			if channel == nil {
+				continue
+			} else {
+				c.Set("auto_group", autoGroup)
+				selectGroup = autoGroup
+				log.Printf("selectGroup: %s", selectGroup)
+				break
+			}
+		}
+	} else {
+		channel, err = getRandomSatisfiedChannel(group, model, retry)
+		if err != nil {
+			return nil, group, err
+		}
+	}
+	if channel == nil {
+		return nil, group, errors.New("channel not found")
+	}
+	return channel, selectGroup, nil
+}
+
+func getRandomSatisfiedChannel(group string, model string, retry int) (*Channel, error) {
 	if strings.HasPrefix(model, "gpt-4-gizmo") {
 		model = "gpt-4-gizmo-*"
 	}

model/option.go

@@ -76,6 +76,8 @@ func InitOptionMap() {
 	common.OptionMap["MinTopUp"] = strconv.Itoa(setting.MinTopUp)
 	common.OptionMap["TopupGroupRatio"] = common.TopupGroupRatio2JSONString()
 	common.OptionMap["Chats"] = setting.Chats2JsonString()
+	common.OptionMap["AutoGroups"] = setting.AutoGroups2JsonString()
+	common.OptionMap["DefaultUseAutoGroup"] = strconv.FormatBool(setting.DefaultUseAutoGroup)
 	common.OptionMap["GitHubClientId"] = ""
 	common.OptionMap["GitHubClientSecret"] = ""
 	common.OptionMap["TelegramBotToken"] = ""
@@ -287,6 +289,10 @@ func updateOptionMap(key string, value string) (err error) {
 		setting.PayAddress = value
 	case "Chats":
 		err = setting.UpdateChatsByJsonString(value)
+	case "AutoGroups":
+		err = setting.UpdateAutoGroupsByJsonString(value)
+	case "DefaultUseAutoGroup":
+		setting.DefaultUseAutoGroup = value == "true"
 	case "CustomCallbackAddress":
 		setting.CustomCallbackAddress = value
 	case "EpayId":