Hooks.once("init", function() {
    console.log("INIT");

    CONFIG.Actor.dataModels.Player = DSA41_CharacterData;

    //DocumentSheetConfig.unregisterSheet(Actor, "core", ActorSheet);
    DocumentSheetConfig.registerSheet(Actor, "dsa41", DSA41_ActorSheet, { 
        makeDefault: true, 
        types: [
            "Player",
        ] 
    });

    //DocumentSheetConfig.unregisterSheet(Item, "core", ItemSheet);
    DocumentSheetConfig.registerSheet(Item, "dsa41", DSA41_ItemSheet, { 
        makeDefault: true, 
        types: [
            "Generic Item",
            "Melee Weapon",
            "Ranged Weapon",
            "Armor",
            "Shield",
        ] 
    });
});

const { SchemaField, NumberField, StringField } = foundry.data.fields;

class AttributeField extends foundry.data.fields.SchemaField {
    constructor() {
        return super({
            initial:     new NumberField({ integer: true, initial: 8, min: 8, max: 14, }),
            advancement: new NumberField({ integer: true, initial: 0, min: 0, max: 4, }),
            modifier:    new NumberField({ integer: true, initial: 0, min: 0, }),
        });
    }
}

class DSA41_CharacterData extends foundry.abstract.TypeDataModel {
    static defineSchema() {
        return {
            race:       new StringField(),
            culture:    new StringField(),
            profession: new StringField(),

            attributes: new SchemaField({
                courage:      new AttributeField(),
                cleverness:   new AttributeField(),
                intuition:    new AttributeField(),
                charisma:     new AttributeField(),
                dexterity:    new AttributeField(),
                agility:      new AttributeField(),
                constitution: new AttributeField(),
                strength:     new AttributeField(),
            }),
        }
    }

    prepareDerivedData() {
        super.prepareDerivedData();
        this.computed = {};

        for (const [attribute, values] of Object.entries(this.attributes)) {
            this.computed[attribute] = Object.values(values).reduce((a, b) => a + b, 0);
        }
    }
}

class DSA41_ActorSheet extends ActorSheet {
    get template() {
        return "systems/dsa-4th-edition/src/ActorSheet.html";
    }
}

class DSA41_ItemSheet extends ItemSheet {
    get template() {
        return "systems/dsa-4th-edition/src/ItemSheets/" + this.item.type + ".html";
    }
}