package model

import (
	"fmt"
	"one-api/common"
	"one-api/constant"
	"one-api/setting/ratio_setting"
	"one-api/types"
	"sync"
	"time"
)

type Pricing struct {
	ModelName              string                  `json:"model_name"`
	QuotaType              int                     `json:"quota_type"`
	ModelRatio             float64                 `json:"model_ratio"`
	ModelPrice             float64                 `json:"model_price"`
	OwnerBy                string                  `json:"owner_by"`
	CompletionRatio        float64                 `json:"completion_ratio"`
	EnableGroup            []string                `json:"enable_groups"`
	SupportedEndpointTypes []constant.EndpointType `json:"supported_endpoint_types"`
}

var (
	pricingMap         []Pricing
	lastGetPricingTime time.Time
	updatePricingLock  sync.Mutex
)

var (
	modelSupportEndpointTypes = make(map[string][]constant.EndpointType)
	modelSupportEndpointsLock = sync.RWMutex{}
)

func GetPricing() []Pricing {
	if time.Since(lastGetPricingTime) > time.Minute*1 || len(pricingMap) == 0 {
		updatePricingLock.Lock()
		defer updatePricingLock.Unlock()
		// Double check after acquiring the lock
		if time.Since(lastGetPricingTime) > time.Minute*1 || len(pricingMap) == 0 {
			modelSupportEndpointsLock.Lock()
			defer modelSupportEndpointsLock.Unlock()
			updatePricing()
		}
	}
	return pricingMap
}

func GetModelSupportEndpointTypes(model string) []constant.EndpointType {
	if model == "" {
		return make([]constant.EndpointType, 0)
	}
	modelSupportEndpointsLock.RLock()
	defer modelSupportEndpointsLock.RUnlock()
	if endpoints, ok := modelSupportEndpointTypes[model]; ok {
		return endpoints
	}
	return make([]constant.EndpointType, 0)
}

func updatePricing() {
	//modelRatios := common.GetModelRatios()
	enableAbilities, err := GetAllEnableAbilityWithChannels()
	if err != nil {
		common.SysError(fmt.Sprintf("GetAllEnableAbilityWithChannels error: %v", err))
		return
	}
	modelGroupsMap := make(map[string]*types.Set[string])

	for _, ability := range enableAbilities {
		groups, ok := modelGroupsMap[ability.Model]
		if !ok {
			groups = types.NewSet[string]()
			modelGroupsMap[ability.Model] = groups
		}
		groups.Add(ability.Group)
	}

	//这里使用切片而不是Set，因为一个模型可能支持多个端点类型，并且第一个端点是优先使用端点
	modelSupportEndpointsStr := make(map[string][]string)

	for _, ability := range enableAbilities {
		endpoints, ok := modelSupportEndpointsStr[ability.Model]
		if !ok {
			endpoints = make([]string, 0)
			modelSupportEndpointsStr[ability.Model] = endpoints
		}
		channelTypes := common.GetEndpointTypesByChannelType(ability.ChannelType, ability.Model)
		for _, channelType := range channelTypes {
			if !common.StringsContains(endpoints, string(channelType)) {
				endpoints = append(endpoints, string(channelType))
			}
		}
		modelSupportEndpointsStr[ability.Model] = endpoints
	}

	modelSupportEndpointTypes = make(map[string][]constant.EndpointType)
	for model, endpoints := range modelSupportEndpointsStr {
		supportedEndpoints := make([]constant.EndpointType, 0)
		for _, endpointStr := range endpoints {
			endpointType := constant.EndpointType(endpointStr)
			supportedEndpoints = append(supportedEndpoints, endpointType)
		}
		modelSupportEndpointTypes[model] = supportedEndpoints
	}

	pricingMap = make([]Pricing, 0)
	for model, groups := range modelGroupsMap {
		pricing := Pricing{
			ModelName:              model,
			EnableGroup:            groups.Items(),
			SupportedEndpointTypes: modelSupportEndpointTypes[model],
		}
		modelPrice, findPrice := ratio_setting.GetModelPrice(model, false)
		if findPrice {
			pricing.ModelPrice = modelPrice
			pricing.QuotaType = 1
		} else {
			modelRatio, _, _ := ratio_setting.GetModelRatio(model)
			pricing.ModelRatio = modelRatio
			pricing.CompletionRatio = ratio_setting.GetCompletionRatio(model)
			pricing.QuotaType = 0
		}
		pricingMap = append(pricingMap, pricing)
	}
	lastGetPricingTime = time.Now()
}