Refactor codebase, introduce relaymode package, update constants and improve consistency

- Refactor constant definitions and organization
- Clean up package level variables and functions
- Introduce new `relaymode` and `apitype` packages for constant definitions
- Refactor and simplify code in several packages including `openai`, `relay/channel/baidu`, `relay/util`, `relay/controller`, `relay/channeltype`
- Add helper functions in `relay/channeltype` package to convert channel type constants to corresponding API type constants
- Remove deprecated functions such as `ResponseText2Usage` from `relay/channel/openai/helper.go`
- Modify code in `relay/util/validation.go` and related files to use new `validator.ValidateTextRequest` function
- Rename `util` package to `relaymode` and update related imports in several packages

common/constants.go

@@ -4,116 +4,3 @@ import "time"
 
 var StartTime = time.Now().Unix() // unit: second
 var Version = "v0.0.0"            // this hard coding will be replaced automatically when building, no need to manually change
-
-const (
-	RoleGuestUser  = 0
-	RoleCommonUser = 1
-	RoleAdminUser  = 10
-	RoleRootUser   = 100
-)
-
-const (
-	UserStatusEnabled  = 1 // don't use 0, 0 is the default value!
-	UserStatusDisabled = 2 // also don't use 0
-	UserStatusDeleted  = 3
-)
-
-const (
-	TokenStatusEnabled   = 1 // don't use 0, 0 is the default value!
-	TokenStatusDisabled  = 2 // also don't use 0
-	TokenStatusExpired   = 3
-	TokenStatusExhausted = 4
-)
-
-const (
-	RedemptionCodeStatusEnabled  = 1 // don't use 0, 0 is the default value!
-	RedemptionCodeStatusDisabled = 2 // also don't use 0
-	RedemptionCodeStatusUsed     = 3 // also don't use 0
-)
-
-const (
-	ChannelStatusUnknown          = 0
-	ChannelStatusEnabled          = 1 // don't use 0, 0 is the default value!
-	ChannelStatusManuallyDisabled = 2 // also don't use 0
-	ChannelStatusAutoDisabled     = 3
-)
-
-const (
-	ChannelTypeUnknown = iota
-	ChannelTypeOpenAI
-	ChannelTypeAPI2D
-	ChannelTypeAzure
-	ChannelTypeCloseAI
-	ChannelTypeOpenAISB
-	ChannelTypeOpenAIMax
-	ChannelTypeOhMyGPT
-	ChannelTypeCustom
-	ChannelTypeAILS
-	ChannelTypeAIProxy
-	ChannelTypePaLM
-	ChannelTypeAPI2GPT
-	ChannelTypeAIGC2D
-	ChannelTypeAnthropic
-	ChannelTypeBaidu
-	ChannelTypeZhipu
-	ChannelTypeAli
-	ChannelTypeXunfei
-	ChannelType360
-	ChannelTypeOpenRouter
-	ChannelTypeAIProxyLibrary
-	ChannelTypeFastGPT
-	ChannelTypeTencent
-	ChannelTypeGemini
-	ChannelTypeMoonshot
-	ChannelTypeBaichuan
-	ChannelTypeMinimax
-	ChannelTypeMistral
-	ChannelTypeGroq
-	ChannelTypeOllama
-	ChannelTypeLingYiWanWu
-
-	ChannelTypeDummy
-)
-
-var ChannelBaseURLs = []string{
-	"",                              // 0
-	"https://api.openai.com",        // 1
-	"https://oa.api2d.net",          // 2
-	"",                              // 3
-	"https://api.closeai-proxy.xyz", // 4
-	"https://api.openai-sb.com",     // 5
-	"https://api.openaimax.com",     // 6
-	"https://api.ohmygpt.com",       // 7
-	"",                              // 8
-	"https://api.caipacity.com",     // 9
-	"https://api.aiproxy.io",        // 10
-	"https://generativelanguage.googleapis.com", // 11
-	"https://api.api2gpt.com",                   // 12
-	"https://api.aigc2d.com",                    // 13
-	"https://api.anthropic.com",                 // 14
-	"https://aip.baidubce.com",                  // 15
-	"https://open.bigmodel.cn",                  // 16
-	"https://dashscope.aliyuncs.com",            // 17
-	"",                                          // 18
-	"https://ai.360.cn",                         // 19
-	"https://openrouter.ai/api",                 // 20
-	"https://api.aiproxy.io",                    // 21
-	"https://fastgpt.run/api/openapi",           // 22
-	"https://hunyuan.cloud.tencent.com",         // 23
-	"https://generativelanguage.googleapis.com", // 24
-	"https://api.moonshot.cn",                   // 25
-	"https://api.baichuan-ai.com",               // 26
-	"https://api.minimax.chat",                  // 27
-	"https://api.mistral.ai",                    // 28
-	"https://api.groq.com/openai",               // 29
-	"http://localhost:11434",                    // 30
-	"https://api.lingyiwanwu.com",               // 31
-}
-
-const (
-	ConfigKeyPrefix = "cfg_"
-
-	ConfigKeyAPIVersion = ConfigKeyPrefix + "api_version"
-	ConfigKeyLibraryID  = ConfigKeyPrefix + "library_id"
-	ConfigKeyPlugin     = ConfigKeyPrefix + "plugin"
-)