db

const dbPromised = idb.open("db-footbal", 1, function(upgradeDb) {
    if(!upgradeDb.objectStoreNames.contains('competitions')){
        upgradeDb.createObjectStore("competitions",{keyPath : "id"});
    }
});



const dbGetAllCompetitions = () =>{
    return new Promise((resolve, reject)=>{
        dbPromised.then(db =>{
            const transaction = db.transaction("competitions", `readonly`);
            return transaction.objectStore("competitions").getAll();
        }).then(data =>{
            if(data!==undefined){
                resolve(data)
            }else{
                reject(new Error("Favorite Not Found"))
            }
        })
    })
}

const checkFavoriteCompetitions = id =>{
    return new Promise((resolve, reject)=>{
        dbPromised.then(db =>{
            const transaction = db.transaction("competitions", `readonly`);
            return transaction.objectStore("competitions").get(id);
        }).then(data =>{
            if(data!==undefined){
                resolve(true)
            }else{
                resolve(false)
            }
        })
    })
}

const dbInsertCompetitions = competition =>{
    return new Promise((resolve, reject)=>{
        dbPromised.then(db =>{
            const transaction = db.transaction("competitions", `readwrite`);
            transaction.objectStore("competitions")
            .add(competition);
            return transaction;
        }).then(transaction =>{
            if(transaction.complete){
                resolve(true)
            }else{
                reject(new Error(transaction.onerror))
            }
        })
    })
}
const dbDeleteCompetitions = id =>{
    return new Promise((resolve, reject)=>{
        dbPromised.then(db =>{
            const transaction = db.transaction("competitions", `readwrite`);
            transaction.objectStore("competitions").delete(id);
            return transaction;
        }).then(transaction =>{
            if(transaction.complete){
                resolve(true)
            }else{
                reject(new Error(transaction.onerror))
            }
        })
    })
}