mp3player-write

.bin/mp3player-write

@@ -0,0 +1,114 @@
+#!/usr/bin/env bash
+
+# Usage:
+# ./mp3_transfer.sh -s 1.3 /mnt/mp3player file1.m4a file2.m4a ...
+
+set -e
+
+# Default speed
+SPEED=1.0
+
+# Parse options
+while getopts ":s:" opt; do
+  case $opt in
+    s)
+      SPEED=$OPTARG
+      ;;
+    \?)
+      echo "Invalid option: -$OPTARG" >&2
+      exit 1
+      ;;
+    :)
+      echo "Option -$OPTARG requires a value." >&2
+      exit 1
+      ;;
+  esac
+done
+
+# Shift past the options
+shift $((OPTIND -1))
+
+# Check arguments
+if [ "$#" -lt 2 ]; then
+  echo "Usage: $0 [-s speed] MOUNT_POINT FILE1 [FILE2 ...]"
+  exit 1
+fi
+
+MOUNT_POINT=$1
+shift
+FILES=("$@")
+
+# Check mount point exists
+if [ ! -d "$MOUNT_POINT" ]; then
+  echo "Error: Mount point '$MOUNT_POINT' does not exist."
+  exit 1
+fi
+
+# Estimate required space
+TOTAL_SIZE=0
+for f in "${FILES[@]}"; do
+  if [ ! -f "$f" ]; then
+    echo "Warning: File '$f' does not exist, skipping."
+    continue
+  fi
+  # Get file size in bytes
+  FILE_SIZE=$(stat --printf="%s" "$f")
+  # Estimate mp3 output size: roughly 1/2 of original m4a (adjust if needed)
+  TOTAL_SIZE=$((TOTAL_SIZE + FILE_SIZE / 2))
+done
+
+# Get available space in bytes
+AVAILABLE=$(df --output=avail "$MOUNT_POINT" | tail -n 1)
+AVAILABLE=$((AVAILABLE * 1024))  # df reports in KB
+
+if [ "$TOTAL_SIZE" -gt "$AVAILABLE" ]; then
+  echo "Error: Not enough space on device. Required: $TOTAL_SIZE bytes, Available: $AVAILABLE bytes"
+  exit 1
+fi
+
+echo "Enough space available. Starting conversion..."
+
+sanitize_filename() {
+  local name="$1"
+  # Remove path, keep only base name
+  name=$(basename "$name" .m4a)
+  # Replace spaces and special chars with underscore
+  name=$(echo "$name" | tr ' ' '_' | tr -cd '[:alnum:]_-')
+  # Truncate to max 50 chars
+  echo "${name:0:50}"
+}
+
+# Convert and copy files
+for f in "${FILES[@]}"; do
+  if [ ! -f "$f" ]; then
+    continue
+  fi
+
+  # Determine the next prefix
+  existing_prefixes=$(ls "$MOUNT_POINT" | grep -E '^[0-9].*\.mp3$' | sed -E 's/^([0-9]).*/\1/' | sort -n | uniq)
+  for i in {0..9}; do
+    if ! echo "$existing_prefixes" | grep -q "^$i$"; then
+      PREFIX=$i
+      break
+    fi
+  done
+
+  echo "Using prefix: $PREFIX"
+
+  BASENAME=$(sanitize_filename "$f")
+  OUT_PATTERN="$MOUNT_POINT/${PREFIX}%02d_${BASENAME}.mp3"
+
+  echo "Converting '$f' to '$OUT_PATTERN' at speed $SPEED..."
+
+  ffmpeg -i "$f" \
+    -filter:a "atempo=$SPEED" -ar 44100 -ac 2 -c:a libmp3lame -b:a 128k \
+    -f segment -segment_time 300 \
+    "$OUT_PATTERN"
+
+  # Update prefix for next file
+  # Count how many segments were created
+  SEG_COUNT=$(ls "$MOUNT_POINT" | grep -E "^${PREFIX}[0-9]{2}_" | wc -l)
+  PREFIX=$((PREFIX + SEG_COUNT))
+done
+
+echo "All files processed successfully."

configs/gaming.nix

@@ -4,6 +4,12 @@
     pkgs.zeroad
     pkgs.mari0
     pkgs.luanti # fka minetest
+    # pkgs.openarena
+    # pkgs.teeworlds
+    pkgs.nethack
+    # pkgs.freeciv
+    # pkgs.lincity-ng
+    # pkgs.superTuxKart
   ];
   networking.firewall = {
     # for 0ad multiplayer

configs/redshift.nix

@@ -1 +1 @@
-{services.redshift.enable = false;}
+{ services.redshift.enable = true; }

configs/zsh.nix

@@ -6,15 +6,6 @@
   promptColours.success = "cyan";
   promptColours.failure = "red";
 in {
-  environment.systemPackages = [pkgs.atuin];
-  environment.variables.ATUIN_CONFIG_DIR = toString (pkgs.writeTextDir "/config.toml" ''
-    auto_sync = true
-    update_check = false
-    sync_address = "http://zaatar.r:8888"
-    sync_frequency = 0
-    style = "compact"
-  '');
-
   programs.zsh = let
     zsh-completions = pkgs.fetchFromGitHub {
       owner = "zsh-users";
@@ -67,13 +58,6 @@ in {
       zstyle ':vcs_info:*' formats "%c%u%F{cyan}%b%f"
       zstyle ':vcs_info:*' actionformats "(%a) %c%u%F{cyan}%b%f"
 
-      # atuin distributed shell history
-      export ATUIN_NOBIND="true" # disable all keybdinings of atuin
-      eval "$(atuin init zsh)"
-      bindkey '^r' _atuin_search_widget # bind ctrl+r to atuin
-      # use zsh only session history
-      fc -p
-
       precmd () {
         vcs_info
         if [ -n "$SSH_CLIENT" ] || [ -n "$SSH_TTY" ] || [ -n "$SSH_CONNECTION" ]; then

systems/fatteh/hardware-configuration.nix

@@ -16,8 +16,17 @@
   boot.initrd.kernelModules = [];
   boot.kernelModules = ["kvm-intel"];
   boot.extraModulePackages = [];
-  boot.loader.systemd-boot.enable = true;
-  boot.loader.efi.canTouchEfiVariables = true;
+
+  boot = {
+    loader = {
+      efi.canTouchEfiVariables = true;
+      systemd-boot = {
+        enable = true;
+        configurationLimit = 5;
+        consoleMode = "max";
+      };
+    };
+  };
 
   boot.initrd.luks.devices."luks-aa6beb1b-3e54-4a0e-ac9c-e0c007d73cd5".device = "/dev/disk/by-uuid/aa6beb1b-3e54-4a0e-ac9c-e0c007d73cd5";
 

systems/makanek/configuration.nix

@@ -20,7 +20,7 @@ in {
     ./scrabble.nix
     # ./onlyoffice.nix
     ./retiolum-map.nix
-    ./tarot.nix
+    ./oracle
     ./tt-rss.nix
     ./weechat.nix
     ../../configs/monitoring.nix

systems/makanek/oracle/default.nix

@@ -6,6 +6,7 @@
 }:
 let
   tarotPort = 7407;
+  ichingPort = 1819;
   tarotFiles = pkgs.fetchzip {
     url = "https://c.krebsco.de/tarot.zip";
     sha256 = "0jl5vdwlj17pqp94yj02xgsb1gyvs9i08m83kac0jdnhfjl2f75a";
@@ -21,39 +22,30 @@ in
     enable = true;
     serviceConfig.Type = "simple";
     wantedBy = [ "multi-user.target" ];
+    environment = {
+      TAROT_FILES = tarotFiles;
+      TAROT_PORT = toString tarotPort;
+    };
     serviceConfig.ExecStart = pkgs.writers.writePython3 "tarot-server" {
-      libraries = py: [ py.pillow py.flask ];
-    } ''
-      from flask import Flask, send_file
-      from pathlib import Path
-      from random import choice, randint
-      from io import BytesIO
-      from PIL import Image
+      libraries = py: [
+        py.pillow
+        py.flask
+      ];
+    } ./tarot.py;
+  };
 
-      app = Flask(__name__)
-      TAROT_DIR = Path("${tarotFiles}")
-
-
-      @app.route("/")
-      def tarot():
-          card_path = choice(list(TAROT_DIR.glob("*")))
-
-          with Image.open(card_path) as img:
-              if randint(0, 1):
-                  img = img.rotate(180)
-              buf = BytesIO()
-              img.save(buf, format="JPEG")
-              buf.seek(0)
-              return send_file(
-                  buf,
-                  mimetype='image/jpeg',
-                  as_attachment=False
-              )
-
-
-      if __name__ == "__main__":
-          app.run(port=${toString tarotPort})
-    '';
+  systemd.services.iching = {
+    enable = true;
+    serviceConfig.Type = "simple";
+    wantedBy = [ "multi-user.target" ];
+    environment = {
+      ICHING_PORT = toString ichingPort;
+    };
+    serviceConfig.ExecStart = pkgs.writers.writePython3 "iching-server" {
+      libraries = py: [
+        py.flask
+      ];
+    } ./iching.py;
   };
 
   niveum.passport.services = [
@@ -62,8 +54,21 @@ in
       title = "Tarot";
       description = "draws Tarot cards for you. See <a href=\"${link}/files/key.pdf\">here</a> for information on how to interpret them.";
     }
+    {
+      link = "https://iching.kmein.de";
+      title = "I Ching";
+      description = "draws I Ching hexagrams for you.";
+    }
   ];
 
+  services.nginx.virtualHosts."iching.kmein.de" = {
+    enableACME = true;
+    forceSSL = true;
+    locations = {
+      "/".proxyPass = "http://127.0.0.1:${toString ichingPort}/";
+    };
+  };
+
   services.nginx.virtualHosts."tarot.kmein.de" = {
     enableACME = true;
     forceSSL = true;

systems/makanek/oracle/iching.py

@@ -0,0 +1,202 @@
+from flask import Flask
+import random
+from typing import List
+from enum import Enum
+import os
+
+app = Flask(__name__)
+
+KING_WEN_SEQUENCE: List[int] = [
+    0b111111,
+    0b000000,
+    0b100010,
+    0b010001,
+    0b111010,
+    0b010111,
+    0b010000,
+    0b000010,
+    0b111011,
+    0b110111,
+    0b111000,
+    0b000111,
+    0b101111,
+    0b111101,
+    0b001000,
+    0b000100,
+    0b100110,
+    0b011001,
+    0b110000,
+    0b000011,
+    0b100101,
+    0b101001,
+    0b000001,
+    0b100000,
+    0b100111,
+    0b111001,
+    0b100001,
+    0b011110,
+    0b010010,
+    0b101101,
+    0b001110,
+    0b011100,
+    0b001111,
+    0b111100,
+    0b000101,
+    0b101000,
+    0b101011,
+    0b110101,
+    0b001010,
+    0b010100,
+    0b110001,
+    0b100011,
+    0b111110,
+    0b011111,
+    0b000110,
+    0b011000,
+    0b010110,
+    0b011010,
+    0b101110,
+    0b011101,
+    0b100100,
+    0b001001,
+    0b001011,
+    0b110100,
+    0b101100,
+    0b001101,
+    0b011011,
+    0b110110,
+    0b010011,
+    0b110010,
+    0b110011,
+    0b001100,
+    0b101010,
+    0b010101,
+]
+
+
+class Line(Enum):
+    """
+    Represents a line in an I Ching hexagram.
+    Each line can be one of the following:
+    - 6: Old Yin (changing yin)
+    - 7: Young Yang (static yang)
+    - 8: Young Yin (static yin)
+    - 9: Old Yang (changing yang)
+    """
+
+    OLD_YIN = 6  # changing yin
+    YOUNG_YANG = 7  # static yang
+    YOUNG_YIN = 8  # static yin
+    OLD_YANG = 9  # changing yang
+
+    def is_changing(self) -> bool:
+        """Returns True if the line is changing (old)."""
+        return self in [Line.OLD_YIN, Line.OLD_YANG]
+
+    def symbol(self) -> str:
+        """Returns the textual representation of the line."""
+        symbols = {
+            Line.YOUNG_YANG: "───────",
+            Line.YOUNG_YIN: "─── ───",
+            Line.OLD_YANG: "───o───",
+            Line.OLD_YIN: "───x───",
+        }
+        return symbols[self]
+
+    def binary_value(self) -> int:
+        """Returns the binary value of the line (1 for yang, 0 for yin)."""
+        return 1 if self in [Line.YOUNG_YANG, Line.OLD_YANG] else 0
+
+
+class Hexagram:
+    """
+    Represents an I Ching hexagram.
+    Each hexagram consists of six lines.
+    """
+
+    def __init__(self, lines: List[Line] | None = None) -> None:
+        """
+        Initializes a Hexagram.
+        If lines are not provided, generates a random hexagram.
+        :param lines: List of six integers = the lines of the hexagram.
+        """
+        if lines is None:
+            self.lines = random.choices(
+                [Line.OLD_YIN, Line.YOUNG_YANG, Line.YOUNG_YIN, Line.OLD_YANG],
+                weights=[1, 5, 7, 3],
+                k=6,
+            )
+        else:
+            self.lines = lines
+
+    def print(self) -> str:
+        """Prints the hexagram details."""
+        return "\n".join(
+            [
+                "HEXAGRAM {} {}".format(
+                    self.king_wen_number(), self.unicode_representation()
+                ),
+                "Binary: {:06b}".format(self.binary_representation()),
+                "Lines (bottom → top): {}".format(
+                    " ".join(str(line.value) for line in self.lines)
+                ),
+                self.render_text(),
+            ]
+        )
+
+    def render_text(self) -> str:
+        """Renders the hexagram in a textual box format."""
+        lines = []
+        lines.append("┌─────────┐")
+        for line in reversed(self.lines):
+            body = line.symbol()
+            lines.append(f"│ {body} │")
+        lines.append("└─────────┘")
+        return "\n".join(lines)
+
+    def binary_representation(self) -> int:
+        """Returns the binary representation of the hexagram."""
+        return sum(
+            val << i
+            for i, val in enumerate(
+                line.binary_value() for line in reversed(self.lines)
+            )
+        )
+
+    def king_wen_number(self) -> int:
+        """Returns the King Wen number of the hexagram."""
+        return KING_WEN_SEQUENCE.index(self.binary_representation()) + 1
+
+    def unicode_representation(self) -> str:
+        """Returns the Unicode character representing the hexagram."""
+        return chr(0x4DC0 + self.king_wen_number() - 1)
+
+    def changing_hexagram(self):
+        """Returns the changing hexagram
+        if there are changing lines, else None."""
+        if any(line.is_changing() for line in self.lines):
+            new_lines = [
+                (
+                    Line.YOUNG_YIN
+                    if line == Line.OLD_YANG
+                    else Line.YOUNG_YANG if line == Line.OLD_YIN else line
+                )
+                for line in self.lines
+            ]
+            return Hexagram(new_lines)
+        return None
+
+
+@app.route("/")
+def main():
+    result = ""
+    hexagram = Hexagram()
+    result += hexagram.print()
+    if changing_hex := hexagram.changing_hexagram():
+        result += "\n"
+        result += changing_hex.print()
+    return f"<pre>{result}</pre>"
+
+
+if __name__ == "__main__":
+    app.run(port=int(os.environ["ICHING_PORT"]))

systems/makanek/oracle/tarot.py

@@ -0,0 +1,26 @@
+from flask import Flask, send_file
+from pathlib import Path
+from random import choice, randint
+from io import BytesIO
+from PIL import Image
+import os
+
+app = Flask(__name__)
+TAROT_DIR = Path(os.environ["TAROT_FILES"])
+
+
+@app.route("/")
+def tarot():
+    card_path = choice(list(TAROT_DIR.glob("*")))
+
+    with Image.open(card_path) as img:
+        if randint(0, 1):
+            img = img.rotate(180)
+        buf = BytesIO()
+        img.save(buf, format="JPEG")
+        buf.seek(0)
+        return send_file(buf, mimetype="image/jpeg", as_attachment=False)
+
+
+if __name__ == "__main__":
+    app.run(port=int(os.environ["TAROT_PORT"]))

systems/zaatar/atuin.nix

@@ -1,16 +0,0 @@
-{pkgs, ...}: {
-  services.postgresqlBackup = {
-    enable = true;
-    databases = ["atuin"];
-  };
-
-  services.postgresql.package = pkgs.postgresql_14;
-
-  services.atuin = {
-    host = "0.0.0.0";
-    openFirewall = true;
-    openRegistration = true;
-    port = 8888;
-    enable = true;
-  };
-}

systems/zaatar/configuration.nix

@@ -7,11 +7,9 @@
   inherit (import ../../lib) retiolumAddresses restic;
 in {
   imports = [
-    ./atuin.nix
     ./backup.nix
     ./gaslight.nix
     ./hardware-configuration.nix
-    ./nas.nix
     ../../configs/mycelium.nix
     ./home-assistant.nix
     ../../configs/monitoring.nix
@@ -66,11 +64,9 @@ in {
     ];
   };
 
-  services.logind = {
-    lidSwitch = "ignore";
-    lidSwitchDocked = "ignore";
-    lidSwitchExternalPower = "ignore";
-  };
+  services.logind.settings.Login.HandleLidSwitchDocked = "ignore";
+  services.logind.settings.Login.HandleLidSwitchExternalPower = "ignore";
+  services.logind.settings.Login.HandleLidSwitch = "ignore";
 
   services.illum.enable = true;
 
@@ -88,9 +84,6 @@ in {
     pkgs.python3 # for sshuttle
   ];
 
-  # since 22.05 timeout fails?
-  # systemd.services.systemd-networkd-wait-online.enable = false;
-
   networking = {
     hostName = "zaatar";
     wireless.interfaces = ["wlp2s0"];

systems/zaatar/nas.nix

@@ -1,78 +0,0 @@
-{ config, ... }:
-{
-  users.extraUsers.nas = {
-    isSystemUser = true;
-    group = "nas";
-    uid = 7451;
-  };
-  users.extraGroups.nas = {
-    gid = 7452;
-  };
-
-  fileSystems."/media/sd" = {
-    device = "/dev/disk/by-id/5E4S5_0x4c585d15-part1";
-    fsType = "ext4";
-    options = [
-      "nofail"
-      "defaults"
-      "uid=${toString config.users.extraUsers.nas.uid}"
-      "gid=${toString config.users.extraGroups.nas.gid}"
-    ];
-  };
-
-  fileSystems."/media/hdd" = {
-    device = "/dev/disk/by-id/0x50014ee658872039-part1";
-    fsType = "ntfs";
-    options = [ # ref https://askubuntu.com/a/113746
-      "nofail"
-      "defaults"
-      "nls=utf8"
-      "umask=000"
-      "dmask=027"
-      "fmask=137"
-      "uid=${toString config.users.extraUsers.nas.uid}"
-      "gid=${toString config.users.extraGroups.nas.gid}"
-      "windows_names"
-    ];
-  };
-
-  # ref https://dataswamp.org/~solene/2020-10-18-nixos-nas.html
-  # ref https://www.reddit.com/r/NixOS/comments/relwsh/comment/hoapgrr/
-  services.samba = {
-    enable = true;
-    securityType = "user";
-    openFirewall = true;
-    settings = {
-      global = {
-        "guest account" = "nobody";
-        "hosts allow" = ["192.168.178." "127.0.0.1" "localhost"];
-        "hosts deny" = ["0.0.0.0/0"];
-        "map to guest" = "Bad User";
-        "netbios name" = "zaatar";
-        "security" = "user";
-        "server role" = "standalone server";
-        "server string" = "zaatar";
-        "workgroup" = "WORKGROUP";
-      };
-    };
-    shares.nas = {
-      path = "/media";
-      browseable = "yes";
-      writable = "yes";
-      # "read only" = "no";
-      "guest ok" = "yes";
-      "create mask" = "0644";
-      "directory mask" = "0755";
-      "force user" = config.users.extraUsers.nas.name;
-      "force group" = config.users.extraUsers.nas.group;
-    };
-  };
-
-  services.samba-wsdd = {
-    enable = true;
-    openFirewall = true;
-  };
-
-  networking.firewall.enable = true;
-  networking.firewall.allowPing = true;
-}