refactor: nixify / clean remaining dots scripts

home/modules/bin/default.nix

@@ -0,0 +1,87 @@
+{
+  config,
+  lib,
+  pkgs,
+  ...
+}:
+
+let
+  script =
+    name: args:
+    pkgs.writeShellApplication (
+      {
+        inherit name;
+        text = builtins.readFile ./scripts/${name};
+      }
+      // args
+    );
+  pythonScript =
+    name: runtimeInputs:
+    pkgs.writeShellApplication {
+      inherit name runtimeInputs;
+      text = ''exec ${lib.getExe pkgs.python3} ${pkgs.writeTextDir name (builtins.readFile ./scripts/${name})}/${name} "$@"'';
+    };
+  ssh-hosts = script "ssh-hosts" {
+    runtimeInputs = with pkgs; [
+      gnugrep
+      gawk
+    ];
+  };
+  scripts = with pkgs; {
+    bak.runtimeInputs = [ coreutils ];
+    notify.runtimeInputs = [ libnotify ];
+    pdftitle.runtimeInputs = [
+      poppler-utils
+      gawk
+      coreutils
+    ];
+    fzf-book.runtimeInputs = [
+      findutils
+      fzf
+      coreutils
+    ];
+    fzf-ssh.runtimeInputs = [
+      ssh-hosts
+      fzf
+    ];
+    save-ssh-host = {
+      runtimeInputs = [
+        ssh-hosts
+        fzf
+      ];
+      excludeShellChecks = [ "SC2029" ];
+    };
+    fzf-fontnames.runtimeInputs = [
+      fontconfig
+      fzf
+      gawk
+      coreutils
+    ];
+    get-anki-decks.runtimeInputs = [
+      curl
+      jq
+    ];
+    get-anki-reviews-status = {
+      runtimeInputs = [ coreutils ];
+      runtimeEnv.ANKI_REVIEWS = config.anki.reviewsCache;
+    };
+  };
+  pythonScripts = with pkgs; {
+    pomo = [ libnotify ];
+    taskdeps = [ ];
+  };
+in
+{
+  options.bin.enable = lib.mkOption {
+    default = false;
+    type = lib.types.bool;
+  };
+
+  config = lib.mkIf config.bin.enable {
+    home.packages = [
+      ssh-hosts
+    ]
+    ++ lib.mapAttrsToList script scripts
+    ++ lib.mapAttrsToList pythonScript pythonScripts;
+  };
+}

home/modules/bin/scripts/bak

@@ -0,0 +1,30 @@
+# back up a file by copying it to a new file with a .bak extension
+# reference: https://askubuntu.com/questions/962489/is-there-any-way-to-create-backup-copy-of-a-file-without-type-its-name-twice
+
+usage() {
+  echo "Usage: bak [-t|--timestamp] <file to back up>"
+  exit 1
+}
+
+timestamp=false
+
+while [[ $# -gt 0 ]]; do
+  case $1 in
+    -t|--timestamp)
+      timestamp=true
+      shift
+      ;;
+    *)
+      break
+      ;;
+  esac
+done
+
+[ $# -eq 1 ] || usage
+
+if $timestamp; then
+  date="$(date +%Y-%m-%d_%H-%M-%S)"
+  cp -vpn "$1"{,."$date".bak}
+else
+  cp -vpn "$1"{,.bak}
+fi

home/modules/bin/scripts/fzf-book

@@ -0,0 +1,26 @@
+# Generate menu of book filenames and save paths
+# Preview window contains metadata
+
+function get_book_paths {
+  find "$HOME/doc/books/" -regex '.*\.\(pdf\|epub\|djvu\)' -type f | sort
+}
+
+function select_file {
+  get_book_paths | fzf --delimiter=/ --with-nth=-1
+}
+
+function open {
+  if [ -n "$1" ]; then
+    echo "Opening \"$1\""
+    zathura "$1" --fork
+  else
+    echo "No file selected"
+    exit 1
+  fi
+}
+
+case "${1:-}" in
+  --open) open "$(select_file)" ;;
+  --help) printf "open \n" >&2 ;;
+  *) open "$(select_file)" ;;
+esac

home/modules/bin/scripts/fzf-fontnames

@@ -0,0 +1,28 @@
+fn="/tmp/fontnames.txt"
+
+contains_dash() {
+  [[ "$1" =~ - ]]
+}
+
+update() {
+  : > "$fn"
+
+  font_list=$(fc-list -f "%{fullname}\n")
+
+  echo "$font_list" | while read -r line ; do
+
+    first="$(echo "$line" | cut -d',' -f1)"
+    last="$(echo "$line" | cut -d',' -f2)"
+
+    if contains_dash "$first"; then
+      echo "$last" >> "$fn"
+    else
+      echo "$first" >> "$fn"
+    fi
+  done
+}
+
+case "${1:-}" in
+  --update) update;;
+  *) sort -u "$fn" | awk 'NF' | fzf;;
+esac

home/modules/bin/scripts/fzf-ssh

@@ -0,0 +1 @@
+ssh "$(ssh-hosts | fzf)"

home/modules/bin/scripts/get-anki-decks

@@ -0,0 +1 @@
+curl 127.0.0.1:8765 -X POST -d '{"action": "deckNames", "version": 6}' | jq '.result[]' -r

home/modules/bin/scripts/get-anki-reviews-status

@@ -0,0 +1,10 @@
+# Get Anki review status from exit code
+
+num_reviews="$(cat "$ANKI_REVIEWS")"
+
+if [ "$num_reviews" -ge "400" ]
+then
+  exit 0
+else
+  exit 1
+fi

home/modules/bin/scripts/notify

@@ -0,0 +1,6 @@
+# Pipe into notify-send
+#
+# e.g. `echo "Hello world" | notify`
+
+read -r msg || true
+notify-send "$msg" "$@"

home/modules/bin/scripts/pdftitle

@@ -0,0 +1 @@
+pdfinfo "$1" | head -n 1 | awk '{for (i=2; i<NF; i++) printf $i " "; print $NF}'

home/modules/bin/scripts/pomo

@@ -0,0 +1,87 @@
+#!/usr/bin/env python3
+# vim: set filetype=python:
+"""
+Pomodoro timer
+
+- Writes pomodoro timer to temporary file so statusbar can read it
+- Notification on session finish
+- Notification on break finish
+"""
+
+import atexit
+import os
+import signal
+import subprocess
+from argparse import ArgumentParser
+from time import sleep
+
+POMO_PATH = os.path.join(
+    os.getenv("XDG_DATA_HOME", os.path.expanduser("~/.local/share")), "pomo"
+)
+
+
+@atexit.register
+def clear():
+    if os.path.exists(POMO_PATH):
+        os.remove(POMO_PATH)
+
+
+def format_mins_secs(mins, secs):
+    return f"{mins:02d}:{secs:02d}"
+
+
+def countdown(duration):
+    while duration != 0:
+        mins = duration // 60
+        secs = duration % 60
+        with open(POMO_PATH, "w") as f:
+            f.write(format_mins_secs(mins, secs))
+        sleep(1)
+        duration -= 1
+
+
+def main(args):
+    work_duration = args.work_duration * 60
+    break_duration = args.break_duration * 60
+    repeats = args.repeats
+
+    while repeats != 0:
+        subprocess.run(["notify-send", "Get started"])
+        countdown(work_duration)
+        if break_duration != 0:
+            subprocess.run(["notify-send", "Time for a break"])
+            countdown(break_duration)
+            subprocess.run(["notify-send", "Break is over, back to work"])
+        repeats -= 1
+
+
+def handle_signal(signal, frame):
+    # Wait for clear to finish
+    clear()
+    print("Exiting")
+    exit(0)
+
+
+if __name__ == "__main__":
+
+    parser = ArgumentParser()
+    parser.add_argument(
+        "-w", "--work-duration", type=int, help="Session duration", default=25
+    )
+    parser.add_argument(
+        "-b", "--break-duration", type=int, help="Break duration", default=5
+    )
+    parser.add_argument(
+        "-r", "--repeats", type=int, help="Numer of sessions", default=1
+    )
+    parser.add_argument("-c", "--clear", action="store_true", help="Clear timer")
+
+    args = parser.parse_args()
+
+    signal.signal(signal.SIGINT, handle_signal)
+    signal.signal(signal.SIGTERM, handle_signal)
+
+    if args.clear:
+        clear()
+    else:
+        main(args)

home/modules/bin/scripts/save-ssh-host

@@ -0,0 +1,10 @@
+selected_hosts="$(ssh-hosts | fzf -m)"
+
+for host in $selected_hosts; do
+    echo "Saving $host"
+    directories="$(ssh "$host" ls | fzf -m)"
+    for directory in $directories; do
+        echo "Saving $host:$directory"
+        ssh "$host" "(tar cvzf - ~/$directory)" > "${host}_${directory}.tar.gz"
+    done
+done

home/modules/bin/scripts/ssh-hosts

@@ -0,0 +1 @@
+grep -E 'Host [a-z0-9\-]*$' ~/.ssh/config | awk '{print $2}'

home/modules/bin/scripts/taskdeps

@@ -0,0 +1,93 @@
+#!/usr/bin/env python3
+
+import argparse
+import json
+import subprocess
+from collections import defaultdict
+
+
+def get_task_data():
+    command = ["task", "+PENDING", "or", "+WAITING", "-COMPLETED", "-DELETED", "export"]
+    return json.loads(subprocess.check_output(command))
+
+
+def parse_task_data(data):
+    dependency_graph = defaultdict(list)
+    task_details = {}
+    dependent_tasks = set()
+
+    for task in data:
+        task_id = task["uuid"]
+        task_details[task_id] = {
+            "id": task.get("id", "?"),
+            "description": task.get("description", "No description"),
+            "status": task.get("status", "Unknown status"),
+        }
+        for dependency in task.get("depends", []):
+            dependency_graph[dependency].append(task_id)
+            dependent_tasks.add(task_id)
+
+    root_tasks = set(task_details.keys()) - dependent_tasks
+    return task_details, dependency_graph, root_tasks
+
+
+def render_dependency_dag(task_details, dependency_graph, root_tasks, show_id):
+    dag_lines = []
+    global_visited = set()
+
+    def dfs(task_id, prefix="", is_last=True, visited=None):
+        if visited is None:
+            visited = set()
+
+        if task_id in visited:
+            return
+
+        visited.add(task_id)
+        global_visited.add(task_id)
+
+        task_info = task_details[task_id]
+        task_line = f"{prefix}{'└── ' if is_last else '├── '}{str(task_info['id']) + ': ' if show_id else ''}{task_info['description']} ({task_info['status']})"
+        dag_lines.append(task_line)
+
+        children = dependency_graph.get(task_id, [])
+        for idx, child in enumerate(children):
+            child_is_last = idx == len(children) - 1
+            child_prefix = prefix + ("    " if is_last else "│   ")
+            dfs(child, child_prefix, child_is_last, visited.copy())
+
+    root_tasks_with_children = [
+        root for root in root_tasks if dependency_graph.get(root, [])
+    ]
+    for root in sorted(
+        root_tasks_with_children,
+        key=lambda x: len(dependency_graph.get(x, [])),
+        reverse=True,
+    ):
+        if root not in global_visited:
+            dfs(root)
+            dag_lines.append("")
+
+    return "\n".join(dag_lines).rstrip()
+
+
+def main(args):
+    data = get_task_data()
+    task_details, dependency_graph, root_tasks = parse_task_data(data)
+    ascii_dag = render_dependency_dag(
+        task_details, dependency_graph, root_tasks, show_id=args.show_id
+    )
+    print(ascii_dag)
+
+
+if __name__ == "__main__":
+    parser = argparse.ArgumentParser(
+        description="Generates a task dependency DAG for Taskwarrior tasks."
+    )
+    parser.add_argument(
+        "--show-id",
+        action="store_true",
+        default=False,
+        help="Include task IDs in the output.",
+    )
+    args = parser.parse_args()
+    main(args)