{%
/*
 * Part of AREDN® -- Used for creating Amateur Radio Emergency Data Networks
 * Copyright (C) 2024 Tim Wilkinson
 * See Contributors file for additional contributors
 *
 * This program is free software: you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation version 3 of the License.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program.  If not, see <http://www.gnu.org/licenses/>.
 *
 * Additional Terms:
 *
 * Additional use restrictions exist on the AREDN® trademark and logo.
 * See AREDNLicense.txt for more info.
 *
 * Attributions to the AREDN® Project must be retained in the source code.
 * If importing this code into a new or existing project attribution
 * to the AREDN® project must be added to the source code.
 *
 * You must not misrepresent the origin of the material contained within.
 *
 * Modified versions must be modified to attribute to the original source
 * and be marked in reasonable ways as differentiate it from the original
 * version
 */
%}
{%
function log()
{
    return replace(fs.readfile("/tmp/pkg.log"), "\n", "<br>");
}
function getPackageOptions()
{
    let i = `<option value="-">-</option>`;
    let r = `<option value="-">-</option>`;
    const perm_pkgs = {};
    const installed_pkgs = {};

    map(split(fs.readfile("/etc/permpkg"), "\n"), p => perm_pkgs[p] = true);

    let f = fs.popen("/bin/opkg list-installed");
    if (f) {
        const re = /^([^ \t]+)[ \t]-[ \t](.+)/;
        for (let l = f.read("line"); length(l); l = f.read("line")) {
            const m = match(l, re);
            if (m) {
                installed_pkgs[m[1]] = true;
                if (!perm_pkgs[m[1]]) {
                    r += `<option value="${m[1]}">${m[1]} (${trim(m[2])})</option>`;
                }
            }
        }
        f.close();
    }

    f = fs.popen("/bin/opkg list");
    if (f) {
        const re = /^([^ ]+) - ([-0-9a-fr\.]+)(.*)$/;
        for (let l = f.read("line"); length(l); l = f.read("line")) {
            let m = match(trim(l), re);
            if (m && !installed_pkgs[m[1]]) {
                i += `<option value="${m[1]}">${m[1]}</option>`;
            }
        }
        f.close();
    }
    return { i: i, r: r };
}
function recordPackage(op, pkgname, pkgfile)
{
    const store = "/etc/package_store";
    const catfile = `${store}/catalog.json`;
    fs.mkdir(store);
    const catalog = json(fs.readfile(catfile) || '{ "installed": {} }');
    switch (op) {
        case "upload":
            const package = split(pkgname, "_")[0];
            if (package) {
                fs.writefile(`${store}/${package}.ipk`, fs.readfile(pkgfile));
                catalog.installed[package] = "local";
            }
            break;
        case "download":
            const f = fs.popen(`/bin/opkg status ${pkgname} 2>&1`);
            if (f) {
                const status = replace(f.read("all"), "\n", " ");
                f.close();
                const m = match(status, /Package: ([^ \t]+)/);
                if (m) {
                    catalog.installed[m[1]] = "global";
                }
            }
            break;
        case "remove":
            fs.unlink(`${store}/${pkgname}.ipk`);
            delete catalog.installed[pkgname];
            break;
        default:
            break;
    }
    fs.unlink(catfile);
    for (let k in catalog.installed) {
        fs.writefile(catfile, sprintf("%J", catalog));
        break;
    }
}
if (request.env.REQUEST_METHOD === "POST" && request.args["packagefile.ipk"] && request.args.packagename) {
    const ipk = request.args["packagefile.ipk"];
    const packagename = fs.readfile(request.args.packagename);
    if (system(`/bin/opkg -force-overwrite install ${ipk} > /dev/null 2>&1`) === 0) {
        recordPackage("upload", packagename, ipk);
        print(`<div id="dialog-messages-success" hx-swap-oob="innerHTML">Package installed</div>`);
    }
    else {
        if (system("/bin/opkg update > /tmp/pkg.log 2>&1") !== 0) {
            print(`<div id="dialog-messages-error" hx-swap-oob="innerHTML">${log()}</div>`);
        }
        else {
            if (system(`/bin/opkg -force-overwrite install ${ipk} > /tmp/pkg.log 2>&1`) === 0) {
                recordPackage("upload", packagename, ipk);
                print(`<div id="dialog-messages-success" hx-swap-oob="innerHTML">Package installed</div>`);
            
            }
            else {
                print(`<div id="dialog-messages-error" hx-swap-oob="innerHTML">${log()}</div>`);
            }
        }
    }
    const po = getPackageOptions();
    print(`<select id="download-package" hx-swap-oob="innerHTML">${po.i}</select>`);
    print(`<select id="remove-package" hx-swap-oob="innerHTML">${po.r}</select>`);
    fs.unlink(ipk);
    fs.unlink(request.args.packagename);
    fs.unlink("/tmp/pkg.log");
    return;
}
else if (request.env.REQUEST_METHOD === "GET" && index(request.env.QUERY_STRING, "d=") === 0) {
    response.override = true;
    uhttpd.send("Status: 200 OK\r\nContent-Type: text/event-stream\r\nCache-Control: no-store\r\n\r\n");

    fs.unlink("/tmp/pkg.log");
    const ipk = substr(request.env.QUERY_STRING, 2);
    uhttpd.send(`event: progress\r\ndata: 10\r\n\r\n`);
    if (system(`/bin/opkg -force-overwrite install ${ipk} > /dev/null 2>&1`) === 0) {
        uhttpd.send(`event: progress\r\ndata: 100\r\n\r\n`);
        recordPackage("download", ipk);
        uhttpd.send(`event: close\r\ndata: ${sprintf("%J", getPackageOptions())}\r\n\r\n`);
    }
    else {
        uhttpd.send(`event: progress\r\ndata: 20\r\n\r\n`);
        if (system("/bin/opkg update > /tmp/pkg.log 2>&1") !== 0) {
            uhttpd.send(`event: error\r\ndata: ${log()}\r\n\r\n`);
        }
        else {
            uhttpd.send(`event: progress\r\ndata: 40\r\n\r\n`);
            if (system(`/bin/opkg -force-overwrite install ${ipk} > /tmp/pkg.log 2>&1`) === 0) {
                uhttpd.send(`event: progress\r\ndata: 100\r\n\r\n`);
                recordPackage("download", ipk);
                uhttpd.send(`event: close\r\ndata: ${sprintf("%J", getPackageOptions())}\r\n`);
            }
            else {
                uhttpd.send(`event: error\r\ndata: ${log()}\r\n\r\n`);
            }
        }
    }
    fs.unlink("/tmp/pkg.log");
    return;
}
else if (request.env.REQUEST_METHOD === "GET" && index(request.env.QUERY_STRING, "r=") === 0) {
    const ipk = substr(request.env.QUERY_STRING, 2);
    if (system(`/bin/opkg remove ${ipk} > /tmp/pkg.log 2>&1`) === 0) {
        recordPackage("remove", ipk);
        print(`<div id="dialog-messages-success" hx-swap-oob="innerHTML">Package removed</div>`);
        const po = getPackageOptions();
        print(`<select id="download-package" hx-swap-oob="innerHTML">${po.i}</select>`);
        print(`<select id="remove-package" hx-swap-oob="innerHTML">${po.r}</select>`);
    }
    else {
        print(`<div id="dialog-messages-error" hx-swap-oob="innerHTML">${log()}</div>`);
    }
    return;
}
else if (request.env.REQUEST_METHOD === "GET" && index(request.env.QUERY_STRING, "i=") === 0) {
    const ipk = substr(request.env.QUERY_STRING, 2);
    if (system(`/bin/opkg info ${ipk} > /tmp/pkg.log 2>&1`) === 0) {
        print(`<div id="package-info" hx-swap-oob="innerHTML">${log()}</div>`);
    }
    return;
}
else if (request.env.REQUEST_METHOD === "GET" && request.env.QUERY_STRING === "v=update") {
    response.override = true;
    uhttpd.send("Status: 200 OK\r\nContent-Type: text/event-stream\r\nCache-Control: no-store\r\n\r\n");

    const pulines = 7;
    const f = fs.popen("/bin/opkg update 2>&1");
    if (!f) {
        uhttpd.send(`event: error\r\ndata: package update failed\r\n\r\n`);
        return;
    }
    let count = 0;
    const re = /^Updated/;
    for (let l = f.read("line"); length(l); l = f.read("line")) {
        if (match(l, re)) {
            count++;
            uhttpd.send(`event: progress\r\ndata: ${100 * count / pulines}\r\n\r\n`);
        }
    }
    uhttpd.send(`event: progress\r\ndata: 100\r\n\r\n`);
    f.close();
    uhttpd.send(`event: close\r\ndata: ${sprintf("%J", getPackageOptions())}\r\n\r\n`);
    return;
}
else if (request.env.REQUEST_METHOD === "PUT" && "packageurl" in request.args) {
    if (match(request.args.packageurl, constants.reUrl)) {
        configuration.prepareChanges();
        uciMesh.set("aredn", "@downloads[0]", "packages_default", request.args.packageurl);
        uciMesh.commit("aredn");
        print(_R("changes"));
    }
    return;
}
%}
{%
const po = getPackageOptions();
%}
<div class="dialog">
    {{_R("dialog-header", "Packages")}}
    <div id="package-update">
        {{_R("dialog-messages")}}
        <div class="cols">
            <div>
                <div class="o">Download Package</div>
                <div class="m">Download package from an AREDN server.</div>
            </div>
            <div style="flex:0">
                <select id="download-package">{{po.i}}</select>
            </div>
            <div style="flex:0">
                <div id="package-refresh"><button class="icon refresh"></button></div>
            </div>
        </div>
        {{_H("Download packages directly from a central server, either on the Internet or a locally configured mesh server.
        Refresh the list of available packages using the refresh button to the right of the packages list. Once a
        package is selected it can be downloaded and installed using the button at the base of the dialog.")}}
        <div id="package-info"></div>
        <div class="cols">
            <div>
                <div class="o">Upload Package</div>
                <div class="m">Upload a package file from your computer.</div>
            </div>
            <div style="flex:0">
                <input type="file" accept=".ipk">
            </div>
        </div>
        {{_H("Upload a package file from your computer. Once the package has been selected it can be uploaded and installed
        using the button at the base of the dialog.")}}
        <div><hr></div>
        <div class="cols">
            <div>
                <div class="o">Remove Package</div>
                <div class="m">Uninstall package from node.</div>
            </div>
            <div style="flex:0">
                <select id="remove-package">{{po.r}}</select>
            </div>
        </div>
        {{_H("Remove a currently installed package from the node by first selecting it and
        then using the button at the based of the dialog to remove it.")}}
        {{_R("dialog-advanced")}}
        <div>
        {% if (includeAdvanced) { %}
            <div class="cols">
                <div>
                    <div class="o">Package URL</div>
                    <div class="m">URL for downloading packages</div>
                </div>
                <div style="flex:0">
                    <input hx-put="{{request.env.REQUEST_URI}}" hx-swap="none" name="packageurl" type="text" style="width:280px" pattern="{{constants.patUrl}}" value="{{uciMesh.get("aredn", "@downloads[0]", "packages_default")}}">
                </div>
            </div>
            {{_H("The base URL used to download packages. By default this points to the main AREDN repository, but you can change this
            to a local server, especially if you'd like to do this without a connection to the Internet.")}}
        {% } %}
        </div>
        <div style="flex:1"></div>
        <div class="cols" style="padding-top:16px">
            <div id="package-upload">
                <progress value="0" max="100">
            </div>
            <div style="flex:0">
                <button id="fetch-and-update" disabled hx-trigger="none" hx-encoding="multipart/form-data">Fetch and Install</button>
            </div>
        </div>
        {{_H("<br>Depending on the package option selected above, this button will initiate the download, upload, install or remove process.")}}
    </div>
    {{_R("dialog-footer", "nocancel")}}
    <script>
    (function(){
        {{_R("open")}}
        function clearStatus() {
            htmx.find("#dialog-messages-error").innerHTML = "";
            htmx.find("#dialog-messages-success").innerHTML = "";
        }
        htmx.on("#package-update input[type='file']", "change", e => {
            clearStatus();
            htmx.find("#fetch-and-update").innerText = "Fetch and Install";
            htmx.find("#download-package").value = "-";
            htmx.find("#remove-package").value = "-";
            htmx.find("#package-info").innerHTML = "";
            if (e.target.files[0]) {
                htmx.find("#fetch-and-update").disabled = false;
            }
            else {
                htmx.find("#fetch-and-update").disabled = true;
            }
        });
        htmx.on("#download-package", "change", e => {
            clearStatus();
            htmx.find("#fetch-and-update").innerText = "Fetch and Install";
            htmx.find("#package-info").innerHTML = "";
            htmx.find("#remove-package").value = "-";
            htmx.find("#package-update input[type=file]").value = null;
            if (e.target.value === "-") {
                htmx.find("#fetch-and-update").disabled = true;
            }
            else {
                htmx.find("#fetch-and-update").disabled = false;
                htmx.ajax("GET", `{{request.env.REQUEST_URI}}?i=${e.target.value}`, {
                    source: e.currentTarget,
                    swap: "none"
                });
            }
            
        });
        htmx.on("#remove-package", "change", e => {
            clearStatus();
            htmx.find("#download-package").value = "-";
            htmx.find("#package-update input[type=file]").value = null;
            htmx.find("#package-info").innerHTML = "";
            if (e.target.value === "-") {
                htmx.find("#fetch-and-update").disabled = true;
            }
            else {
                htmx.find("#fetch-and-update").disabled = false;
                htmx.find("#fetch-and-update").innerText = "Remove";
            }
        });
        htmx.on("#fetch-and-update", "click", e => {
            clearStatus();
            htmx.find("#fetch-and-update").disabled = true;
            const upload = htmx.find("#package-update input[type=file]").files[0];
            const download = htmx.find("#download-package").value;
            const remove = htmx.find("#remove-package").value;
            if (upload) {
                htmx.on(e.currentTarget, "htmx:xhr:progress", e => htmx.find("#package-upload progress").setAttribute("value", e.detail.loaded / e.detail.total * 100));
                htmx.ajax("POST", "{{request.env.REQUEST_URI}}", {
                    source: e.currentTarget,
                    values: {
                        packagename: htmx.find("#package-update input[type=file]").value.replace(/^.*\\/, ""),
                        "packagefile.ipk": upload
                    },
                    swap: "none"
                }).then(_ => htmx.find("#package-upload progress").setAttribute("value", "0"));
            }
            else if (download !== "-") {
                const source = new EventSource(`{{request.env.REQUEST_URI}}?d=${download}`);
                source.addEventListener("close", e => {
                    source.close();
                    htmx.find("#package-upload progress").setAttribute("value", "0");
                    htmx.find("#dialog-messages-success").innerHTML = "Package installed";
                    const j = JSON.parse(e.data);
                    htmx.find("#download-package").innerHTML = j.i;
                    htmx.find("#remove-package").innerHTML = j.r;
                });
                source.addEventListener("error", e => {
                    source.close();
                    htmx.find("#package-upload progress").setAttribute("value", "0");
                    htmx.find("#dialog-messages-error").innerHTML = e.data || "Unknown error";
                });
                source.addEventListener("progress", e => {
                    htmx.find("#package-upload progress").setAttribute("value", e.data);
                });
            }
            else if (remove !== "-") {
                htmx.ajax("GET", `{{request.env.REQUEST_URI}}?r=${remove}`, {
                    source: e.currentTarget,
                    swap: "none"
                }).then(_ => {
                    htmx.find("#fetch-and-update").innerText = "Fetch and Install";
                    htmx.find("#remove-package").value = "-";
                });
            }
        });
        htmx.on("#package-refresh", "click", e => {
            htmx.find("#package-refresh button").classList.add("rotate");
            clearStatus();
            htmx.find("#package-update input[type=file]").value = null;
            htmx.find("#fetch-and-update").disabled = true;
            htmx.find("#fetch-and-update").innerText = "Fetch and Install";
            htmx.find("#package-info").innerHTML = "";
            const source = new EventSource("{{request.env.REQUEST_URI}}?v=update");
            source.addEventListener("close", e => {
                source.close();
                htmx.find("#package-refresh button").classList.remove("rotate");
                htmx.find("#package-upload progress").setAttribute("value", "0");
                const j = JSON.parse(e.data);
                htmx.find("#download-package").innerHTML = j.i;
                htmx.find("#remove-package").innerHTML = j.r;
            });
            source.addEventListener("error", e => {
                source.close();
                htmx.find("#package-refresh button").classList.remove("rotate")
                htmx.find("#package-upload progress").setAttribute("value", "0");
                htmx.find("#dialog-messages-error").innerHTML = e.data || "Unknown error";
            });
            source.addEventListener("progress", e => {
                htmx.find("#package-upload progress").setAttribute("value", e.data);
            });
        });
        htmx.on("#dialog-done", "click", _ => {
            htmx.ajax("GET", "/a/packages", {
                swap: "none"
            });
        });
    })();
    </script>
</div>