nepali-date@bishalacharya: add Nepali date (BS) applet (#8145)

* nepali-date@bishalacharya: add Nepali date (BS) applet, displays current nepali date in Cinammon Panel

* fix file structure

Author: everestbis

nepali-date@bishalacharya/README.md

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+# Nepali Date Applet (BS)
+
+A simple Cinnamon applet that displays the current **Nepali date (Bikram Sambat – BS)** directly on the panel.

nepali-date@bishalacharya/files/nepali-date@bishalacharya/applet.js

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+const Applet = imports.ui.applet;
+// const Mainloop = imports.mainloop;
+const GLib = imports.gi.GLib;
+const Settings = imports.ui.settings;
+
+const APPLET_UUID = "nepali-date@bishalacharya";
+
+const APPLET_DIR = imports.ui.appletManager.appletMeta[APPLET_UUID].path;
+
+
+const SETTINGS = {
+    'language': 'en',
+    'format': 'Month Day, Year',
+};
+
+// Get current Nepal Time
+function getNepaliNow() {
+    let tz = GLib.TimeZone.new("Asia/Kathmandu");
+    return GLib.DateTime.new_now(tz);
+}
+// Month names
+const monthsEnglish = ['Baisakh','Jestha','Ashar','Shrawan','Bhadra','Ashoj','Kartik','Mangsir','Poush','Magh','Falgun','Chaitra'];
+const monthsNepali  = ['बैशाख','जेठ','असार','श्रावण','भदौ','असोज','कार्तिक','मंसिर','पुष','माघ','फाल्गुन','चैत्र'];
+
+// Helper: convert English digits to Nepali
+function toNepaliDigits(str) {
+    const map = "०१२३४५६७८९";
+    return str.replace(/\d/g, d => map[d]);
+}
+
+// Nepali BS calendar data
+const nepcal = {
+    74: {
+      mon_days: [31, 31, 31, 32, 31, 31, 30, 29, 30, 29, 30, 30],
+      tot_days: 365,
+    },
+    75: {
+      mon_days: [31, 31, 32, 31, 31, 31, 30, 29, 30, 29, 30, 30],
+      tot_days: 365,
+    },
+    76: {
+      mon_days: [31, 32, 31, 32, 31, 30, 30, 30, 29, 29, 30, 30],
+      tot_days: 365,
+    },
+    77: {
+      mon_days: [31, 32, 31, 32, 31, 30, 30, 30, 29, 30, 29, 31],
+      tot_days: 366,
+    },
+    78: {
+      mon_days: [31, 31, 31, 32, 31, 31, 30, 29, 30, 29, 30, 30],
+      tot_days: 365,
+    },
+    79: {
+      mon_days: [31, 31, 32, 31, 31, 31, 30, 29, 30, 29, 30, 30],
+      tot_days: 365,
+    },
+    80: {
+      mon_days: [31, 32, 31, 32, 31, 30, 30, 30, 29, 29, 30, 30],
+      tot_days: 365,
+    },
+    81: {
+      mon_days: [31, 32, 31, 32, 31, 30, 30, 30, 29, 30, 29, 31],
+      tot_days: 366,
+    },
+    82: {
+      mon_days: [31, 31, 32, 31, 31, 31, 30, 29, 30, 29, 30, 30],
+      tot_days: 365,
+    },
+    83: {
+      mon_days: [31, 31, 32, 31, 31, 30, 30, 30, 29, 30, 30, 30],
+      tot_days: 365,
+    },
+    84: {
+      mon_days: [31, 31, 32, 31, 31, 30, 30, 30, 29, 30, 30, 30],
+      tot_days: 365,
+    },
+    85: {
+      mon_days: [31, 32, 31, 32, 30, 31, 30, 30, 29, 30, 30, 30],
+      tot_days: 365,
+    },
+    86: {
+      mon_days: [30, 32, 31, 32, 31, 30, 30, 30, 29, 30, 30, 30],
+      tot_days: 365,
+    },
+    87: {
+      mon_days: [31, 31, 32, 31, 31, 31, 30, 30, 29, 30, 30, 30],
+      tot_days: 366,
+    },
+    88: {
+      mon_days: [30, 31, 32, 32, 30, 31, 30, 30, 29, 30, 30, 30],
+      tot_days: 365,
+    },
+    89: {
+      mon_days: [30, 32, 31, 32, 31, 30, 30, 30, 29, 30, 30, 30],
+      tot_days: 365,
+    },
+    90: {
+      mon_days: [30, 32, 31, 32, 31, 30, 30, 30, 29, 30, 30, 30],
+      tot_days: 365,
+    },
+};
+
+const months = [
+    'Baisakh','Jestha','Ashar','Shrawan','Bhadra',
+    'Ashoj','Kartik','Mangsir','Poush','Magh','Falgun','Chaitra'
+];
+
+// Reference: Nepali BS 2074-01-01 = 2017-04-14
+const refNep = [2074, 1, 1];
+const refEng = new Date(2017, 3, 14);
+
+function getNepaliDate() {
+    // date from nepali time
+    let now = getNepaliNow(); // GLib.DateTime
+
+    // Convert GLib.DateTime → JS Date for diff calculations
+    let current = new Date(now.get_year(), now.get_month() - 1, now.get_day_of_month());
+
+    let diff = Math.floor((current - refEng) / (1000 * 3600 * 24));
+    let year = refNep[0], month = refNep[1], day = refNep[2];
+
+    let startYear = 74;
+    let yDiff = 0, mDiff = 0, dRem = diff;
+    let stop = false;
+
+    while (!stop) {
+        let data = nepcal[startYear];
+        if (!data) break;
+        if (dRem > data.tot_days) {
+            yDiff++;
+            dRem -= data.tot_days;
+            startYear++;
+        } else {
+            for (let i = 0; i < data.mon_days.length; i++) {
+                let md = data.mon_days[i];
+                if (dRem >= md) {
+                    mDiff++;
+                    dRem -= md;
+                } else {
+                    stop = true;
+                    break;
+                }
+            }
+        }
+    }
+
+    year += yDiff;
+    month += mDiff;
+    if (month > 12) {
+        year += Math.floor((month-1)/12);
+        month = ((month-1) % 12) + 1;
+    }
+    day += dRem;
+
+    return { year, month, day }; // return as object for further formatting
+    }
+
+class NepaliDateApplet extends Applet.TextApplet {
+    constructor(metadata, orientation, panelHeight, instanceId) {
+        super(orientation, panelHeight, instanceId);
+        this.set_applet_tooltip("Nepali Date");
+        this._initSettings(metadata, instanceId);
+        this._update();
+        GLib.timeout_add_seconds(GLib.PRIORITY_DEFAULT, 1, () => {
+        this._update();
+        return true;
+    });
+    }
+      _initSettings(metadata, instanceId) {
+        this.settings = new Settings.AppletSettings(this, metadata.uuid, instanceId);
+
+        for (const setting of Object.keys(SETTINGS)) {
+            this.settings.bindProperty(
+                Settings.BindingDirection.IN,
+                setting,
+                setting,
+                this._update.bind(this),
+                null
+            );
+        }
+    }
+
+    _update() {
+        let bs = getNepaliDate();
+
+        let monthNames = this.language =="en" ? monthsEnglish : monthsNepali;
+        let label = "";
+
+        if(this.format=="YYYY/MM/DD"){
+            let month = ("0" + bs.month).slice(-2);
+            let day = ("0" + bs.day).slice(-2);
+            label = `${bs.year}/${month}/${day}`;
+        }
+        else if(this.format=="YYYY Month DD")
+          label = `${bs.year} ${monthNames[bs.month-1]} ${bs.day}`;
+        else if(this.format="Month DD, YYYY")
+          label = `${monthNames[bs.month-1]} ${bs.day}, ${bs.year}`;
+
+        if(this.language=="ne")
+            label = toNepaliDigits(label);
+
+        this.set_applet_label(label);
+    }
+}
+
+function main(metadata, orientation, panelHeight, instanceId) {
+    return new NepaliDateApplet(metadata,orientation, panelHeight, instanceId);
+}

nepali-date@bishalacharya/files/nepali-date@bishalacharya/icon.png

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+{
+    "uuid": "nepali-date@bishalacharya",
+  "name": "Nepali Date (BS)",
+    "description": "Show Nepali (Bikram Sambat) date",
+    "version": "1.0",
+    "max-instances": -1}

nepali-date@bishalacharya/files/nepali-date@bishalacharya/metadata.json

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+{
+  "language": {
+    "type": "combobox",
+    "default": "en",
+    "description": "Language",
+    "options": {
+      "English": "en",
+      "Nepali": "ne"
+    }
+  },
+  "format": {
+    "type": "combobox",
+    "default": "Month DD, YYYY",
+    "description": "Date format",
+    "options": {
+      "YYYY/MM/DD": "YYYY/MM/DD",
+      "YYYY Month DD": "YYYY Month DD",
+      "Month DD, YYYY": "Month DD, YYYY"
+    }
+  
+  }
+  
+
+}

nepali-date@bishalacharya/files/nepali-date@bishalacharya/settings-schema.json

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+{
+    "author":"everestbis"
+}