import {Attachment} from "./attachment.js"
import {X8} from "./utils/utils.js"
import {PropertyTagLiterals} from "./property_tags.js"

export class Attachments extends Array<Attachment> {
    /**
     * Writes the Attachment objects to the given storage and sets all the needed properties
     * @param rootStorage
     * @returns {number} the total size of the written attachment objects and their properties
     */
    writeToStorage(rootStorage: any): number {
        let size = 0

        for (let i = 0; i < this.length; i++) {
            const attachment = this[i]
            const storage = rootStorage.addStorage(PropertyTagLiterals.AttachmentStoragePrefix + X8(i))
            size += attachment.writeProperties(storage, i)
        }

        return size
    }

    attach(attachment: Attachment): void {
        if (this.length >= 2048) throw new Error("length > 2048 => too many attachments!")
        this.push(attachment)
    }
}