import { readFileSync, writeFileSync } from "fs"
import { DesugaringStep } from "../Models/ThemeConfig/Conversion/Conversion"
import { LayerConfigJson } from "../Models/ThemeConfig/Json/LayerConfigJson"
import { Utils } from "../Utils"
import Translations from "../UI/i18n/Translations"

class ConvertImagesToIcon extends DesugaringStep<LayerConfigJson> {
    private _iconClass: string

    constructor(iconClass: string) {
        super(
            "Searches for images in the 'then' path, removes the <img> block and extracts the image itself a 'icon'",
            [],
            "ConvertImagesToIcon"
        )
        this._iconClass = iconClass
    }

    convert(
        json: LayerConfigJson,
        context: string
    ): { result: LayerConfigJson; errors?: string[]; warnings?: string[]; information?: string[] } {
        const information = []
        const errors = []
        json = Utils.Clone(json)
        Utils.WalkPath(["tagRenderings", "mappings"], json, (mapping) => {
            const then = Translations.T(mapping.then)
            const images = Utils.Dedup(then.ExtractImages())
            if (images.length == 0) {
                return mapping
            }
            if (images.length > 1) {
                errors.push(
                    "The mapping " + mapping.then + " has multiple images: " + images.join(", ")
                )
            }
            information.push("Replaced image " + images[0])
            const replaced = then.OnEveryLanguage((s) => {
                return s
                    .replace(/(<div [^>]*>)?<img [^>]*> ?/, "")
                    .replace(/<\/div>$/, "")
                    .trim()
            })

            mapping.then = replaced.translations
            mapping.icon = { path: images[0], class: this._iconClass }
            return mapping
        })

        return {
            information,
            result: json,
        }
    }
}

/**
 * One-of script to load one layer.json-file and rewrite all tagrenderings
 */
function main() {
    let args = [...process.argv]
    args.splice(0, 2)
    const path = args[0]
    const iconClass = args[1] ?? "small"
    const targetFile = args[2] ?? path + ".autoconverted.json"
    const parsed = JSON.parse(readFileSync(path, { encoding: "utf8" }))
    const converted = new ConvertImagesToIcon(iconClass).convertStrict(
        parsed,
        "While running the fixImagesInTagRenderings-script"
    )
    writeFileSync(targetFile, JSON.stringify(converted, null, "  "))
    console.log("Written fixed version to " + targetFile)
}

main()