export const loadCompendiumOptions = async (compendiums) => {
    const compendiumValues = [];

    for(var compendium of compendiums){
        const values = await getCompendiumOptions(compendium);
        compendiumValues.push(values);
    }

    return compendiumValues;
};

const getCompendiumOptions = async (compendium) => {
    const compendiumPack = await game.packs.get(compendium);
    
    const values = [];
    for(var value of compendiumPack.index){
        const document = await compendiumPack.getDocument(value._id);
        values.push(document);
    }

    return values;
};

export const getWidthOfText = (txt, fontsize, allCaps, bold) => {
    // if(getWidthOfText.e === undefined){
    //     getWidthOfText.e = document.createElement('span');
    //     getWidthOfText.e.style.display = "none";
    //     document.body.appendChild(getWidthOfText.e);
    // }
    // if(getWidthOfText.e.style.fontSize !== fontsize)
    //     getWidthOfText.e.style.fontSize = fontsize;
    // if(getWidthOfText.e.style.fontFamily !== 'Signika, sans-serif')
    //     getWidthOfText.e.style.fontFamily = 'Signika, sans-serif';
    // getWidthOfText.e.innerText = txt;
    // return getWidthOfText.e.offsetWidth;
    const text = allCaps ? txt.toUpperCase() : txt;
    if(getWidthOfText.c === undefined){
        getWidthOfText.c=document.createElement('canvas');
        getWidthOfText.ctx=getWidthOfText.c.getContext('2d');
    }
    var fontspec = `${bold ? 'bold': ''} ${fontsize}px` + ' ' + 'Signika, sans-serif';
    if(getWidthOfText.ctx.font !== fontspec)
        getWidthOfText.ctx.font = fontspec;

    return getWidthOfText.ctx.measureText(text).width;
}

export const padArray = (arr, len, fill) => {
    return arr.concat(Array(len).fill(fill)).slice(0,len);
}

export const getTier = (level, asNr) => {
    switch(Math.floor((level+1)/3)){
        case 1: 
            return asNr ? 1 : 'tier1';
        case 2:
            return asNr ? 2 : 'tier2';
        case 3:
            return asNr ? 3 : 'tier3';
        default:
            return asNr ? 0 : 'tier0';
    }
}

export const capitalize = (string) =>  {
    return string.charAt(0).toUpperCase() + string.slice(1);
}

export const getPathValue = (path, entity, numeric) => {
    const pathValue = foundry.utils.getProperty(entity, path);
    if(pathValue) return numeric ? Number.parseInt(pathValue) : pathValue;

    return numeric ? Number.parseInt(path) : path;
};

export const generateId = (title, length) => {
    const id = title.split(" ").map((w, i) => {
      const p = w.slugify({replacement: "", strict: true});
      return i ? p.titleCase() : p;
    }).join("");
    return Number.isNumeric(length) ? id.slice(0, length).padEnd(length, "0") : id;
}