class CloudObject{
    id
    className
    data = {}
    constructor(className){
        this.className = className
    }
    toPointer(){
        return {"__type":"Pointer","className":this.className,"objectId":this.id}
    }
    set(json){
        Object.keys(json).forEach(key=>{
            if(["objectId","id","createdAt","updatedAt","ACL"].indexOf(key)>-1){
                return
            }
            this.data[key] = json[key]
        })
    }
    get(key){
        return this.data[key] || null
    }
    async save(){
        let method = "POST"
        let url = "https://dev.fmode.cn/parse/classes/" + this.className
        // 更新
        if(this.id){
            url += "/"+this.id
            method = "PUT"
        } 
        let body = JSON.stringify(this.data)
        let response = await fetch(url, {
            "headers": {
              "content-type": "application/json;charset=UTF-8",
              "x-parse-application-id": "dev"
            },
            "body": body,
            "method": method,
            "mode": "cors",
            "credentials": "omit"
          });
          let result = await response?.json();
          if(result?.error){
            console.error(result?.error)
          }
          if(result?.objectId){this.id = result?.objectId}
          return this
    }
    async destory(){
        if(!this.id) return
        let response = await fetch("https://dev.fmode.cn/parse/classes/Doctor/"+this.id, {
            "headers": {
              "x-parse-application-id": "dev"
            },
            "body": null,
            "method": "DELETE",
            "mode": "cors",
            "credentials": "omit"
          });
          let result = await response?.json();
          if(result){
            this.id = null
        }
        return true
    }
}

class CloudQuery{
    className
    constructor(className){
        this.className = className
    }

    whereOptions = {}
    greaterThan(key,value){
        if(!this.whereOptions[key]) this.whereOptions[key] = {}
        this.whereOptions[key]["$gt"] = value
    }
    greaterThanAndEqualTo(key,value){
        if(!this.whereOptions[key]) this.whereOptions[key] = {}
        this.whereOptions[key]["$gte"] = value
    }
    lessThan(key,value){
        if(!this.whereOptions[key]) this.whereOptions[key] = {}
        this.whereOptions[key]["$lt"] = value
    }
    lessThanAndEqualTo(key,value){
        if(!this.whereOptions[key]) this.whereOptions[key] = {}
        this.whereOptions[key]["$lte"] = value
    }
    equalTo(key,value){
        this.whereOptions[key] = value
    }

    async get(id){
        let url = "https://dev.fmode.cn/parse/classes/"+this.className+"/"+id+"?"

        let response = await fetch(url, {
            "headers": {
            "if-none-match": "W/\"1f0-ghxH2EwTk6Blz0g89ivf2adBDKY\"",
            "x-parse-application-id": "dev"
            },
            "body": null,
            "method": "GET",
            "mode": "cors",
            "credentials": "omit"
        });
        let json = await response?.json();
        return json || {}
    }
    async find(){
        let url = "https://dev.fmode.cn/parse/classes/"+this.className+"?"
        
        if(Object.keys(this.whereOptions)?.length){
            let whereStr = JSON.stringify(this.whereOptions)
            url += `where=${whereStr}`
        }

        let response = await fetch(url, {
            "headers": {
            "if-none-match": "W/\"1f0-ghxH2EwTk6Blz0g89ivf2adBDKY\"",
            "x-parse-application-id": "dev"
            },
            "body": null,
            "method": "GET",
            "mode": "cors",
            "credentials": "omit"
        });
        let json = await response?.json();
        return json?.results || []
    }
    async first(){
        let url = "https://dev.fmode.cn/parse/classes/"+this.className+"?"
        
        if(Object.keys(this.whereOptions)?.length){
            let whereStr = JSON.stringify(this.whereOptions)
            url += `where=${whereStr}`
        }

        let response = await fetch(url, {
            "headers": {
            "if-none-match": "W/\"1f0-ghxH2EwTk6Blz0g89ivf2adBDKY\"",
            "x-parse-application-id": "dev"
            },
            "body": null,
            "method": "GET",
            "mode": "cors",
            "credentials": "omit"
        });
        let json = await response?.json();
        let exists = json?.results?.[0] || null
        if(exists){
            let existsObject = new CloudObject(this.className)
            existsObject.set(exists)
            existsObject.id = exists.objectId
            existsObject.createdAt = exists.createdAt
            existsObject.updatedAt = exists.updatedAt
            return existsObject
        }
    }
}

module.exports.CloudObject = CloudObject
module.exports.CloudQuery = CloudQuery