const ING_DB_VERSION = 7;

// @See https://github.com/mdn/learning-area/blob/master/javascript/apis/client-side-storage/indexeddb/video-store/index.js

let idb;
let ireload = false;
let iload_complete = false;
let ings;
let recipes;

let ingMap;
let ingList = [];

let recipeMap;
let recipeList = [];

let ingIDMap;
let recipeIDMap;

/*
 * Load item set from local DB. Calls init() on success.
 */
async function ing_load_local(init_func) {
    console.log("IngMap is: \n " + ingMap);
    let get_tx = idb.transaction(['ing_db', 'recipe_db'], 'readonly');
    let ings_store = get_tx.objectStore('ing_db');
    let recipes_store = get_tx.objectStore('recipe_db');
    let request3 = ings_store.getAll();
    request3.onerror = function(event) {
        console.log("Could not read local ingredient db...");
    }
    request3.onsuccess = function(event) {
        console.log("Successfully read local ingredient db.");
        ings = request3.result;
        let request4 = recipes_store.getAll();
        request4.onerror = function(event) {
            console.log("Could not read local recipe db...");
        }
        request4.onsuccess = function(event) {
            console.log("Successfully read local recipe db.");
            recipes = request4.result;
            init_ing_maps();
            init_func();
            iload_complete = true;
        }
    }
    await get_tx.complete;
    idb.close();
}

function clean_ing(ing) {
    if (ing.remapID === undefined) {
        if (ing.displayName === undefined) {
            ing.displayName = ing.name;
        }
    }
}

/*
 * Load item set from remote DB (aka a big json file). Calls init() on success.
 */
async function load_ings(init_func) {

    let getUrl = window.location;
    let baseUrl = getUrl.protocol + "//" + getUrl.host + "/" + getUrl.pathname.split('/')[1];
    let url = baseUrl + "/ingreds_compress.json";
    url = url.replace(/\w+.html/, "") ; 
    let result = await (await fetch(url)).json();

    result = await (await fetch(url)).json();
    ings = result;

    url = url.replace("/ingreds_compress.json", "/recipes_compress.json");
    result = await (await fetch(url)).json();
    recipes = result.recipes;

    // https://developer.mozilla.org/en-US/docs/Web/API/IDBObjectStore/clear
    /*let clear_tx2 = db.transaction(['ing_db'], 'readwrite');
    let clear_ings = clear_tx2.objectStore('ing_db');
    let clear_tx3 = db.transaction(['recipe_db'], 'readwrite');
    let clear_recipes = clear_tx3.objectStore('recipe_db');
    await clear_ings.clear();
    await clear_recipes.clear();
    await clear_tx2.complete;
    await clear_tx3.complete;*/
    let add_promises = [];
    let add_tx2 = idb.transaction(['ing_db'], 'readwrite');
    let ings_store = add_tx2.objectStore('ing_db');
    for (const id in ings) {
        clean_ing(ings[id]);
        add_promises.push(ings_store.add(ings[id], id));
    }
    let add_tx3 = idb.transaction(['recipe_db'], 'readwrite');
    let recipes_store = add_tx3.objectStore('recipe_db');
    for (const recipe in recipes) {
        add_promises.push(recipes_store.add(recipes[recipe], recipe));
    }
    add_promises.push(add_tx2.complete);
    add_promises.push(add_tx3.complete);
    Promise.all(add_promises).then((values) => {
        init_ing_maps();
        init_func();
        iload_complete = true;
    });
    // DB not closed? idfk man
}

function load_ing_init(init_func) {
    if (iload_complete) {
        console.log("Ingredient db already loaded, skipping load sequence");
        init_func();
        return;
    }
    let request = window.indexedDB.open("ing_db", ING_DB_VERSION)
    request.onerror = function() {
        console.log("DB failed to open...");
    }

    request.onsuccess = function() {
        idb = request.result;
        if (!ireload) {
            console.log("Using stored data...")
            ing_load_local(init_func);
        }
        else {
            console.log("Using new data...")
            load_ings(init_func);
        }
    }

    request.onupgradeneeded = function(e) {
        ireload = true;

        let idb = e.target.result;
        
        try {
            idb.deleteObjectStore('ing_db');
        }
        catch (error) {
            console.log("Could not delete ingredient DB. This is probably fine");
        }
        try {
            idb.deleteObjectStore('recipe_db');
        }
        catch (error) {
            console.log("Could not delete recipe DB. This is probably fine");
        }
        idb.createObjectStore('ing_db');
        idb.createObjectStore('recipe_db');

        console.log("DB setup complete...");
    }
}

function init_ing_maps() {
    ingMap = new Map();
    recipeMap = new Map();
    ingIDMap = new Map();
    recipeIDMap = new Map();

    let ing = Object();
    ing.name = "No Ingredient";
    ing.displayName = "No Ingredient";
    ing.tier = 0;
    ing.lvl = 0;
    ing.skills = ["ARMOURING", "TAILORING", "WEAPONSMITHING", "WOODWORKING", "JEWELING", "COOKING", "ALCHEMISM", "SCRIBING"];
    ing.ids= {};
    ing.itemIDs = {"dura": 0, "strReq": 0, "dexReq": 0,"intReq": 0,"defReq": 0,"agiReq": 0,};
    ing.consumableIDs = {"dura": 0, "charges": 0};
    ing.posMods = {"left": 0, "right": 0, "above": 0, "under": 0, "touching": 0, "notTouching": 0};
    ing.id = 4000;
    ingMap.set(ing["displayName"], ing);
    ingList.push(ing["displayName"]);
    ingIDMap.set(ing["id"], ing["displayName"]);
    let numerals = new Map([[1, "I"], [2, "II"], [3, "III"], [4, "IV"], [5, "V"], [6, "VI"]]);
    for (let i = 0; i < 5; i ++) {
        for (const powderIng of powderIngreds) {
            let ing = Object();
            ing.name = "" + damageClasses[i+1] + " Powder " + numerals.get(powderIngreds.indexOf(powderIng) + 1);
            ing.displayName = ing.name
            ing.tier = 0;
            ing.lvl = 0;
            ing.skills = ["ARMOURING", "TAILORING", "WEAPONSMITHING", "WOODWORKING"];
            ing.ids = {};
            ing.isPowder = true;
            ing.pid = 6*i + powderIngreds.indexOf(powderIng);
            ing.id = 4001 + ing.pid;
            ing.itemIDs = {"dura": powderIng["durability"], "strReq": 0, "dexReq": 0,"intReq": 0,"defReq": 0,"agiReq": 0,};
            switch(i) {
                case 0:
                    ing.itemIDs["strReq"] = powderIng["skpReq"];
                    break;
                case 1:
                    ing.itemIDs["dexReq"] = powderIng["skpReq"];
                    break;
                case 2:
                    ing.itemIDs["intReq"] = powderIng["skpReq"];
                    break;
                case 3:
                    ing.itemIDs["defReq"] = powderIng["skpReq"];
                    break;
                case 4:
                    ing.itemIDs["agiReq"] = powderIng["skpReq"];
                    break;
            }
            ing.consumableIDs = {"dura": 0, "charges": 0};
            ing.posMods = {"left": 0, "right": 0, "above": 0, "under": 0, "touching": 0, "notTouching": 0};
            ingMap.set(ing["displayName"],ing);
            ingList.push(ing["displayName"]);
            ingIDMap.set(ing["id"], ing["displayName"]);
        }
    }
    

    for (const ing of ings) {
        ingMap.set(ing["displayName"], ing);
        ingList.push(ing["displayName"]);
        ingIDMap.set(ing["id"], ing["displayName"]);
    }
    for (const recipe of recipes) {
        recipeMap.set(recipe["name"], recipe);
        recipeList.push(recipe["name"]);
        recipeIDMap.set(recipe["id"],recipe["name"]);
    }
}