---
interface Props {
  modid: string
}
const { modid } = Astro.props
---

<gradle-version modid={modid}>
  <div class="wrapper">
    <label for="loader-selector" class="sr-only">Select the Modloader</label>
    <select
      name="loader-selector"
      id="loader-selector"
      class="selector cursor-pointer rounded-md pl-3 pr-2 py-1.5 border-2 dark:border-green-300 dark:bg-neutral-800 dark:text-white focus-visible:outline-none"
      aria-label="Choose the Modloader">
      
    </select>
    <label for="version-selector" class="sr-only">Select the Version</label>
    <select
      name="version-selector"
      id="version-selector"
      class="selector cursor-pointer rounded-md ml-2 pl-3 pr-2 py-1.5 border-2 dark:border-green-300 dark:bg-neutral-800 dark:text-white focus-visible:outline-none"
      aria-label="Choose the Version">
    </select>
  </div>
  <pre class="mt-2"><code class="language-java" id=`${modid}-version` >{modid}_version = <span id="resulting-version"/></code></pre>
</gradle-version>

<script>
class VersionInfo {
    loaderList: any;
    versionList: any;
    finishedArray: any;
    modInfo: any;
    
    selectedLoader: string;
    selectedVersion: string;

    constructor(loaderList: any, finishedArray: any, modInfo: any) {
        this.loaderList = loaderList;
        this.finishedArray = finishedArray;
        this.modInfo = modInfo;
        this.selectedLoader = this.loaderList[0];
        this.versionList = this.loadVersionList();
        this.selectedVersion = this.versionList[0];
    }

    setLoaderVersion(version: string) {
        this.selectedLoader = version;
        this.versionList = this.loadVersionList();
    }
    setGameVersion(version: string) {
        this.selectedVersion = version;
    }

    /**
     * Tries to get the mod version for the selected Minecraft version and Modloader
     * @returns The resulting mod version
     */
    getResultingVersion(): string {
        let resultingVersionID = this.finishedArray[this.selectedLoader + "+" + this.selectedVersion];
        let resultingVersion = "Not available";
        if (this.selectedLoader != "forge") resultingVersion += " (yet)"
        try {
            resultingVersion = this.modInfo.find((info: any) => info.id == resultingVersionID).version_number;
        } catch {}
        return resultingVersion;
    }

    /**
     * Loads the version list from the finishedArray
     * @returns A list of all the versions for the selected Modloader
     * */
    loadVersionList() {
        let selectedLoader = this.selectedLoader;
        let versionMap = Object.keys(this.finishedArray).reduce(function(map, value) { 
            if (value.startsWith(selectedLoader)) {
                const version = value.split("+")[1];
                if (!Object.values(map).includes(version)) {
                    map[version] = "";
                }
            }
            return map;
        }, {});
        let versionList = Object.keys(versionMap).sort().reverse();
        versionList = versionList.filter((version) => !version.includes("w") // Sorts out snapshots
            && (!version.includes("-") || !versionList.includes(version.split("-")[0]) // Sorts out pre-releases/release candidates for releases that are already out
        ));
        return versionList;
    }
    
    /**
     * Loads the version info from Modrinth
     * @param modid The ID of the mod
     */
    static async load(modid: string): Promise<VersionInfo> {
        const modInfo = await fetch(`https://api.modrinth.com/v2/project/${modid}/version`).then((response) => response.json())
        const loaderList = ['fabric', 'quilt', 'forge', 'neoforge'];
        let sortedModInfo = Object.values(modInfo).sort((entry1: any, entry2: any) => new Date(entry1.date_published) < new Date(entry2.date_published) ? -1 : 1);

        var finishedArray = sortedModInfo.reduce(function(map: any, value: any) {
            value.game_versions.forEach((version: string) => {
                value.loaders.forEach((loader: string) => {
                    const loaderAndVersion = loader + "+" +version;
                    map[loaderAndVersion] = value.id;
                });
            });
        return map;
        }, {});

        return new VersionInfo(loaderList, finishedArray, modInfo);
    }
}

// Define the behaviour for our new type of HTML element.
class VersionElement extends HTMLElement {
  static observedAttributes = ["modid"];

  connectedCallback() {
    var modid = this.getAttribute("modid");
    if (modid == null) return;
    
    // Get the gradle.properties code block
    const versionLabel = document.getElementById("resulting-version");
    // Get the 2 selectors defined above
    const loaderSelector = document.getElementById("loader-selector");
    const versionSelector = document.getElementById("version-selector");
    
    VersionInfo.load(modid).then((versionInfo) => {
        if (loaderSelector instanceof HTMLSelectElement) {
            versionInfo.loaderList.forEach((loader: string) => {
                loaderSelector.options[loaderSelector.options.length] = new Option(loader.charAt(0).toUpperCase() + loader.replace("neoforge", "NeoForge").slice(1), loader);
            })
        }
        if (versionSelector instanceof HTMLSelectElement) {
            versionInfo.versionList.forEach((version: string) => {
                versionSelector.options[versionSelector.options.length] = new Option(version, version);
            })
        }

        if (versionLabel) versionLabel.innerText = versionInfo.getResultingVersion();

        loaderSelector?.addEventListener("change", async (e) => {
            const {
                target: { value }, // Returns the current loader string
            } = e;

            versionInfo.setLoaderVersion(value);
            if (versionLabel) versionLabel.innerText = versionInfo.getResultingVersion();
        });
        versionSelector?.addEventListener("change", async (e) => {
            const {
                target: { value }, // Returns the current version string
            } = e;

            versionInfo.setGameVersion(value);
            if (versionLabel) versionLabel.innerText = versionInfo.getResultingVersion();
        });
    });
  }

  
}
// Tell the browser to use our VersionElement class for <gradle-version> elements.
customElements.define('gradle-version', VersionElement);
</script>

<style lang="scss" is:global>
  .selector:is(.darkmode *) {
    background-color: var(--dark-100);
  }
</style>