bar: update indicator

1 files changed, 148 insertions, 0 deletions

diff --git a/services/updates.ts b/services/updates.ts
new file mode 100644
index 0000000..0b04e85
--- /dev/null
+++ b/services/updates.ts
@@ -0,0 +1,148 @@
+import { execAsync, GLib, GObject, property, readFileAsync, register, writeFileAsync } from "astal";
+import { updates as config } from "../config";
+
+interface Update {
+    name: string;
+    full: string;
+}
+
+interface Repo {
+    repo?: string[];
+    updates: Update[];
+    icon: string;
+    name: string;
+}
+
+interface Data {
+    cached?: boolean;
+    repos: Repo[];
+    errors: string[];
+}
+
+@register({ GTypeName: "Updates" })
+export default class Updates extends GObject.Object {
+    static instance: Updates;
+    static get_default() {
+        if (!this.instance) this.instance = new Updates();
+
+        return this.instance;
+    }
+
+    readonly #cachePath = `${CACHE}/updates.txt`;
+
+    #timeout?: GLib.Source;
+    #loading = false;
+    #data: Data = { cached: true, repos: [], errors: [] };
+
+    @property(Boolean)
+    get loading() {
+        return this.#loading;
+    }
+
+    @property(Object)
+    get data() {
+        return this.#data;
+    }
+
+    @property(Object)
+    get list() {
+        return this.#data.repos.map(r => r.updates).flat();
+    }
+
+    @property(Number)
+    get numUpdates() {
+        return this.#data.repos.reduce((acc, repo) => acc + repo.updates.length, 0);
+    }
+
+    async #updateFromCache() {
+        this.#data = JSON.parse(await readFileAsync(this.#cachePath));
+        this.notify("data");
+        this.notify("list");
+        this.notify("num-updates");
+    }
+
+    async #getRepo(repo: string) {
+        return (await execAsync(`bash -c "comm -12 <(pacman -Qq | sort) <(pacman -Slq '${repo}' | sort)"`)).split("\n");
+    }
+
+    getUpdates() {
+        // Return if already getting updates
+        if (this.#loading) return;
+
+        this.#loading = true;
+        this.notify("loading");
+
+        // Get new updates
+        Promise.allSettled([execAsync("checkupdates"), execAsync("yay -Qua")])
+            .then(async ([pacman, yay]) => {
+                const data: Data = { repos: [], errors: [] };
+
+                // Pacman updates (checkupdates)
+                if (pacman.status === "fulfilled") {
+                    const repos: Repo[] = [
+                        { repo: await this.#getRepo("core"), updates: [], icon: "hub", name: "Core repository" },
+                        {
+                            repo: await this.#getRepo("extra"),
+                            updates: [],
+                            icon: "add_circle",
+                            name: "Extra repository",
+                        },
+                        {
+                            repo: await this.#getRepo("multilib"),
+                            updates: [],
+                            icon: "account_tree",
+                            name: "Multilib repository",
+                        },
+                    ];
+
+                    for (const update of pacman.value.split("\n")) {
+                        const pkg = update.split(" ")[0];
+                        for (const repo of repos)
+                            if (repo.repo?.includes(pkg)) repo.updates.push({ name: pkg, full: update });
+                    }
+
+                    for (const repo of repos) if (repo.updates.length > 0) data.repos.push(repo);
+                }
+
+                // AUR and devel updates (yay -Qua)
+                if (yay.status === "fulfilled") {
+                    const aur: Repo = { updates: [], icon: "deployed_code_account", name: "AUR" };
+
+                    for (const update of yay.value.split("\n")) {
+                        if (/^\s*->/.test(update)) data.errors.push(update); // Error
+                        else aur.updates.push({ name: update.split(" ")[0], full: update });
+                    }
+
+                    if (aur.updates.length > 0) data.repos.push(aur);
+                }
+
+                if (data.errors.length > 0 && data.repos.length === 0) {
+                    this.#updateFromCache().catch(console.error);
+                } else {
+                    // Cache and set
+                    writeFileAsync(this.#cachePath, JSON.stringify({ cached: true, ...data })).catch(console.error);
+                    this.#data = data;
+                    this.notify("data");
+                    this.notify("list");
+                    this.notify("num-updates");
+                }
+
+                this.#loading = false;
+                this.notify("loading");
+
+                this.#timeout?.destroy();
+                this.#timeout = setTimeout(() => this.getUpdates(), config.interval);
+            })
+            .catch(console.error);
+    }
+
+    constructor() {
+        super();
+
+        // Initial update from cache, if fail then write valid data to cache so future reads don't fail
+        this.#updateFromCache().catch(() =>
+            writeFileAsync(this.#cachePath, JSON.stringify(this.#data)).catch(console.error)
+        );
+        this.getUpdates();
+    }
+}