#!/bin/bash

set -o pipefail

OMARCHY_BIN_DIR=$(cd -- "$(dirname -- "${BASH_SOURCE[0]}")" && pwd)
METADATA_SCAN_LIMIT=80

COMMAND_KEYS=()
ROUTE_COLLISIONS=()
declare -A COMMAND_ROUTE
declare -A COMMAND_FALLBACK_ROUTE
declare -A COMMAND_BINARY
declare -A COMMAND_GROUP
declare -A COMMAND_NAME
declare -A COMMAND_SUMMARY
declare -A COMMAND_USAGE
declare -A COMMAND_ARGS
declare -A COMMAND_EXAMPLES
declare -A COMMAND_REQUIRES_SUDO
declare -A COMMAND_HIDDEN
declare -A COMMAND_ALIASES
declare -A COMMAND_HAS_SUMMARY
declare -A COMMAND_METADATA_ERRORS
declare -A ROUTE_TO_KEY
declare -A ROUTE_IS_ALIAS
declare -A BINARY_TO_KEY
declare -A GROUP_DESCRIPTIONS

GROUP_DESCRIPTIONS[ac]="AC power detection"
GROUP_DESCRIPTIONS[battery]="Battery status helpers"
GROUP_DESCRIPTIONS[branch]="Omarchy git branch management"
GROUP_DESCRIPTIONS[branding]="About and screensaver branding"
GROUP_DESCRIPTIONS[brightness]="Display and keyboard brightness"
GROUP_DESCRIPTIONS[capture]="Screenshots and screen recording"
GROUP_DESCRIPTIONS[channel]="Omarchy release channel management"
GROUP_DESCRIPTIONS[cmd]="Command and shortcut helpers"
GROUP_DESCRIPTIONS[config]="System configuration helpers"
GROUP_DESCRIPTIONS[debug]="Diagnostics and support logs"
GROUP_DESCRIPTIONS[default]="Default application selection"
GROUP_DESCRIPTIONS[dev]="Omarchy development tools"
GROUP_DESCRIPTIONS[drive]="Drive selection and encryption"
GROUP_DESCRIPTIONS[font]="Font management"
GROUP_DESCRIPTIONS[hibernation]="Hibernation setup and removal"
GROUP_DESCRIPTIONS[hook]="User hook runner"
GROUP_DESCRIPTIONS[hw]="Hardware detection and controls"
GROUP_DESCRIPTIONS[hyprland]="Hyprland window, monitor, and toggle controls"
GROUP_DESCRIPTIONS[install]="Optional software installers"
GROUP_DESCRIPTIONS[launch]="Application launchers"
GROUP_DESCRIPTIONS[menu]="Omarchy menu commands"
GROUP_DESCRIPTIONS[migrate]="Migration runner"
GROUP_DESCRIPTIONS[notification]="Notification helpers"
GROUP_DESCRIPTIONS[npx]="NPX package wrappers"
GROUP_DESCRIPTIONS[pkg]="Package management helpers"
GROUP_DESCRIPTIONS[plymouth]="Plymouth boot theme management"
GROUP_DESCRIPTIONS[powerprofiles]="Power profile management"
GROUP_DESCRIPTIONS[refresh]="Reset config to defaults"
GROUP_DESCRIPTIONS[reinstall]="Reinstall and reset workflows"
GROUP_DESCRIPTIONS[reminder]="Desktop notification reminders"
GROUP_DESCRIPTIONS[remove]="Removal workflows"
GROUP_DESCRIPTIONS[restart]="Restart Omarchy components"
GROUP_DESCRIPTIONS[setup]="Interactive setup wizards"
GROUP_DESCRIPTIONS[screensaver]="Screensaver branding and animation"
GROUP_DESCRIPTIONS[snapshot]="System snapshots"
GROUP_DESCRIPTIONS[sudo]="Sudo configuration helpers"
GROUP_DESCRIPTIONS[swayosd]="SwayOSD status display helpers"
GROUP_DESCRIPTIONS[system]="Reboot, shutdown, logout, and lock"
GROUP_DESCRIPTIONS[theme]="Theme management"
GROUP_DESCRIPTIONS[toggle]="Toggle Omarchy features"
GROUP_DESCRIPTIONS[transcode]="Image and video transcoding"
GROUP_DESCRIPTIONS[tui]="Terminal UI launchers"
GROUP_DESCRIPTIONS[tz]="Timezone selection"
GROUP_DESCRIPTIONS[update]="Omarchy and system updates"
GROUP_DESCRIPTIONS[version]="Version and channel information"
GROUP_DESCRIPTIONS[voxtype]="Voxtype dictation"
GROUP_DESCRIPTIONS[weather]="Weather status"
GROUP_DESCRIPTIONS[webapp]="Web app launchers"
GROUP_DESCRIPTIONS[wifi]="Wi-Fi helpers"
GROUP_DESCRIPTIONS[windows]="Windows VM management"

join_words() {
  local separator="$1"
  shift
  local joined=""

  for word in "$@"; do
    if [[ -z $joined ]]; then
      joined="$word"
    else
      joined+="$separator$word"
    fi
  done

  printf '%s' "$joined"
}

append_pipe_value() {
  local current="$1"
  local addition="$2"

  if [[ -z $current ]]; then
    printf '%s' "$addition"
  else
    printf '%s|%s' "$current" "$addition"
  fi
}

register_route() {
  local route="$1"
  local key="$2"
  local is_alias="${3:-false}"

  [[ -z $route || -z $key ]] && return

  if [[ -n ${ROUTE_TO_KEY[$route]} && ${ROUTE_TO_KEY[$route]} != "$key" ]]; then
    ROUTE_COLLISIONS+=("$route -> ${ROUTE_TO_KEY[$route]} conflicts with $key")
    return
  fi

  ROUTE_TO_KEY["$route"]="$key"
  if [[ $is_alias == "true" ]]; then
    ROUTE_IS_ALIAS["$route"]="true"
  fi
}

register_command() {
  local file="$1"
  local file_binary="${file##*/}"
  local group=""
  local name=""
  local summary=""
  local usage=""
  local binary=""
  local args=""
  local examples=""
  local aliases=""
  local requires_sudo=""
  local hidden=""
  local line=""
  local metadata_key=""
  local metadata_value=""
  local line_count=0
  local name_seen="false"
  local fallback_summary=""
  local has_summary="false"
  local metadata_errors=""

  while IFS= read -r line && (( line_count < METADATA_SCAN_LIMIT )); do
    line_count=$((line_count + 1))

    if (( line_count == 1 )) && [[ $line == "#!"* ]]; then
      continue
    fi

    if [[ $line =~ ^[[:space:]]*$ ]]; then
      continue
    fi

    if [[ ! $line =~ ^[[:space:]]*# ]]; then
      break
    fi

    if [[ $line =~ ^[[:space:]]*#[[:space:]]*omarchy:([[:alnum:]_-]+)=(.*)$ ]]; then
      metadata_key="${BASH_REMATCH[1]}"
      metadata_value="${BASH_REMATCH[2]}"
      metadata_value="${metadata_value%$'\r'}"
      metadata_value="${metadata_value//$'\t'/ }"

      case "$metadata_key" in
      group)
        group="$metadata_value"
        ;;
      name)
        name="$metadata_value"
        name_seen="true"
        ;;
      summary)
        summary="$metadata_value"
        [[ -n $metadata_value ]] && has_summary="true"
        ;;
      args)
        args="$metadata_value"
        ;;
      examples)
        examples="$metadata_value"
        ;;
      alias | aliases)
        aliases="$metadata_value"
        ;;
      requires-sudo)
        requires_sudo="$metadata_value"
        [[ $metadata_value == "true" ]] || metadata_errors=$(append_pipe_value "$metadata_errors" "requires-sudo must be omitted or true")
        ;;
      hidden)
        hidden="$metadata_value"
        [[ $metadata_value == "true" ]] || metadata_errors=$(append_pipe_value "$metadata_errors" "hidden must be omitted or true")
        ;;
      *)
        ;;
      esac
    elif [[ -z $fallback_summary && $line =~ ^[[:space:]]*#[[:space:]]*(.+)$ ]]; then
      fallback_summary="${BASH_REMATCH[1]}"
      fallback_summary="${fallback_summary%$'\r'}"
      fallback_summary="${fallback_summary//$'\t'/ }"

      if [[ -z $fallback_summary || $fallback_summary == omarchy:* ]]; then
        fallback_summary=""
      fi
    fi
  done <"$file"

  local stem="${file_binary#omarchy-}"
  local fallback_group="$stem"
  local fallback_name=""
  local fallback_route="omarchy ${stem//-/ }"

  if [[ $stem == *-* ]]; then
    fallback_group="${stem%%-*}"
    fallback_name="${stem#*-}"
    fallback_name="${fallback_name//-/ }"
  fi

  [[ -z $binary ]] && binary="$file_binary"
  [[ -z $group ]] && group="$fallback_group"
  [[ $name_seen != "true" ]] && name="$fallback_name"
  [[ -z $summary && -n $fallback_summary ]] && summary="$fallback_summary"
  [[ -z $summary ]] && summary="Run the ${stem//-/ } command"
  local route="omarchy $group"
  if [[ -n $name ]]; then
    route+=" $name"
  fi

  if [[ -z $usage ]]; then
    usage="$route"
    if [[ -n $args ]]; then
      usage+=" $args"
    fi
  fi

  [[ $requires_sudo == "true" ]] || requires_sudo="false"
  [[ $hidden == "true" ]] || hidden="false"

  local key="$file_binary"
  COMMAND_KEYS+=("$key")
  COMMAND_ROUTE["$key"]="$route"
  COMMAND_FALLBACK_ROUTE["$key"]="$fallback_route"
  COMMAND_BINARY["$key"]="$binary"
  COMMAND_GROUP["$key"]="$group"
  COMMAND_NAME["$key"]="$name"
  COMMAND_SUMMARY["$key"]="$summary"
  COMMAND_USAGE["$key"]="$usage"
  COMMAND_ARGS["$key"]="$args"
  COMMAND_EXAMPLES["$key"]="$examples"
  COMMAND_REQUIRES_SUDO["$key"]="$requires_sudo"
  COMMAND_HIDDEN["$key"]="$hidden"
  COMMAND_HAS_SUMMARY["$key"]="$has_summary"
  COMMAND_METADATA_ERRORS["$key"]="$metadata_errors"

  BINARY_TO_KEY["$binary"]="$key"
  register_route "$route" "$key"
  register_route "$fallback_route" "$key"

  local old_ifs="$IFS"
  local alias_route=""
  IFS='|'
  for alias_route in $aliases; do
    alias_route="${alias_route# }"
    alias_route="${alias_route% }"
    [[ -z $alias_route || $alias_route == "$route" ]] && continue
    register_route "$alias_route" "$key" true
    COMMAND_ALIASES["$key"]=$(append_pipe_value "${COMMAND_ALIASES[$key]}" "$alias_route")
  done
  IFS="$old_ifs"
}

load_commands() {
  local file=""

  for file in "$OMARCHY_BIN_DIR"/omarchy-*; do
    [[ -f $file && -x $file ]] || continue
    register_command "$file"
  done

}

load_command_by_binary() {
  local binary="$1"
  local file="$OMARCHY_BIN_DIR/$binary"

  [[ -f $file && -x $file ]] || return 1
  register_command "$file"
}

load_child_commands_by_binary() {
  local binary="$1"
  local file=""

  for file in "$OMARCHY_BIN_DIR/$binary"-*; do
    [[ -f $file && -x $file ]] || continue
    register_command "$file"
  done
}

group_has_child_commands() {
  local group="$1"
  local file=""

  for file in "$OMARCHY_BIN_DIR/omarchy-$group"-*; do
    [[ -f $file && -x $file ]] && return 0
  done

  return 1
}

group_has_binary_commands() {
  local group="$1"

  [[ -x $OMARCHY_BIN_DIR/omarchy-$group ]] && return 0
  group_has_child_commands "$group"
}

command_requires_args() {
  local key="$1"
  local args="${COMMAND_ARGS[$key]}"
  local required="$args"

  while [[ $required =~ ^(.*)\[[^][]*\](.*)$ ]]; do
    required="${BASH_REMATCH[1]}${BASH_REMATCH[2]}"
  done

  required="${required// /}"
  [[ -n $required ]]
}

load_group_commands() {
  local group="$1"
  local file=""

  if [[ -f $OMARCHY_BIN_DIR/omarchy-$group && -x $OMARCHY_BIN_DIR/omarchy-$group ]]; then
    register_command "$OMARCHY_BIN_DIR/omarchy-$group"
  fi

  for file in "$OMARCHY_BIN_DIR/omarchy-$group"-*; do
    [[ -f $file && -x $file ]] || continue
    register_command "$file"
  done

}

resolve_direct_route() {
  local argc="$1"
  shift
  local args=("$@")
  local prefix_count=0
  local route=""
  local binary=""
  local candidate=""

  for (( prefix_count = argc; prefix_count >= 1; prefix_count-- )); do
    route="omarchy $(join_words " " "${args[@]:0:prefix_count}")"

    binary="omarchy-$(join_words "-" "${args[@]:0:prefix_count}")"
    candidate="$OMARCHY_BIN_DIR/$binary"
    if [[ -f $candidate && -x $candidate ]]; then
      DIRECT_RESOLVED_BINARY="$binary"
      DIRECT_RESOLVED_COUNT="$prefix_count"
      DIRECT_RESOLVED_ROUTE="$route"
      return 0
    fi
  done

  return 1
}

sorted_keys() {
  local include_all="$1"
  local key=""

  for key in "${COMMAND_KEYS[@]}"; do
    if [[ $include_all != "true" && ${COMMAND_HIDDEN[$key]} == "true" ]]; then
      continue
    fi
    printf '%s\t%s\n' "${COMMAND_ROUTE[$key]}" "$key"
  done | sort -u | cut -f2-
}

fallback_group_for_key() {
  local key="$1"
  local fallback="${COMMAND_FALLBACK_ROUTE[$key]#omarchy }"

  printf '%s' "${fallback%% *}"
}

command_route_for_group() {
  local key="$1"
  local group="$2"

  if [[ $(fallback_group_for_key "$key") == "$group" && ${COMMAND_GROUP[$key]} != "$group" ]]; then
    printf '%s' "${COMMAND_FALLBACK_ROUTE[$key]}"
  else
    printf '%s' "${COMMAND_ROUTE[$key]}"
  fi
}

command_usage_for_group() {
  local key="$1"
  local group="$2"
  local route=""

  route=$(command_route_for_group "$key" "$group")
  if [[ -n ${COMMAND_ARGS[$key]} ]]; then
    route+=" ${COMMAND_ARGS[$key]}"
  fi

  printf '%s' "$route"
}

sorted_group_keys() {
  local group="$1"
  local include_all="$2"
  local key=""
  local fallback_group=""
  local route=""

  for key in "${COMMAND_KEYS[@]}"; do
    if [[ $include_all != "true" && ${COMMAND_HIDDEN[$key]} == "true" ]]; then
      continue
    fi

    fallback_group=$(fallback_group_for_key "$key")
    if [[ ${COMMAND_GROUP[$key]} != "$group" && $fallback_group != "$group" ]]; then
      continue
    fi

    route=$(command_route_for_group "$key" "$group")
    printf '%s\t%s\n' "$route" "$key"
  done | sort -u | cut -f2-
}

examples_as_lines() {
  local examples="$1"
  local old_ifs="$IFS"
  local example=""
  IFS='|'

  for example in $examples; do
    example="${example# }"
    example="${example% }"
    [[ -n $example ]] && printf '%s\n' "$example"
  done

  IFS="$old_ifs"
}

pipe_values_as_lines() {
  local values="$1"
  local old_ifs="$IFS"
  local value=""
  IFS='|'

  for value in $values; do
    value="${value# }"
    value="${value% }"
    [[ -n $value ]] && printf '%s\n' "$value"
  done

  IFS="$old_ifs"
}

show_group_list() {
  local sorted_group=""

  printf '%s\n' "${!GROUP_DESCRIPTIONS[@]}" | sort | while IFS= read -r sorted_group; do
    [[ -n $sorted_group ]] || continue
    printf '  %-14s %s\n' "$sorted_group" "${GROUP_DESCRIPTIONS[$sorted_group]}"
  done
}

show_main_help() {
  cat <<'EOF'
Omarchy command center

Usage:
  omarchy <command> [args...]
  omarchy commands [--all] [--json] [--check]
  omarchy <group> --help
  omarchy <group> <command> --help

Common commands:
  omarchy update              Update Omarchy and system packages
  omarchy theme list          List available themes
  omarchy theme set <name>    Apply a theme
  omarchy font list           List available fonts
  omarchy screenshot          Take a screenshot
  omarchy debug               Print debugging information

Groups:
EOF
  show_group_list
  cat <<'EOF'

Discovery:
  omarchy commands            List all commands
  omarchy commands --all      Include commands explicitly marked hidden
  omarchy commands --json     Machine-readable command list
  omarchy commands --check    Validate command metadata and routes
EOF
}

show_commands_help() {
  cat <<'EOF'
Usage:
  omarchy commands [--all] [--json] [--markdown] [--check]

List commands known to the Omarchy command center.

Options:
  --all       Include commands explicitly marked hidden
  --json      Emit machine-readable JSON
  --markdown  Emit a Markdown command table
  --check     Validate command metadata and route collisions
EOF
}

print_command_table() {
  local rows="$1"
  local max_width=0
  local width=0
  local command=""
  local rest=""
  local summary=""

  while IFS=$'\t' read -r command rest; do
    [[ -n $command ]] || continue
    width=${#command}
    (( width > max_width )) && max_width=$width
  done <<<"$rows"

  while IFS=$'\t' read -r command rest; do
    [[ -n $command ]] || continue

    printf '  %-*s  %s\n' "$max_width" "$command" "$rest"
  done <<<"$rows"
}

show_commands() {
  local include_all="$1"
  local key=""
  local route=""
  local usage=""
  local rows=""
  local alias_rows=""

  if [[ $include_all == "true" ]]; then
    echo "Omarchy commands (all):"
  else
    echo "Omarchy commands:"
  fi

  while IFS= read -r key; do
    [[ -n $key ]] || continue
    usage="${COMMAND_USAGE[$key]}"
    rows+="$usage"$'\t'"${COMMAND_SUMMARY[$key]}"$'\n'
  done < <(sorted_keys "$include_all")

  print_command_table "$rows"

  for route in "${!ROUTE_IS_ALIAS[@]}"; do
    key="${ROUTE_TO_KEY[$route]}"
    if [[ $include_all != "true" && ${COMMAND_HIDDEN[$key]} == "true" ]]; then
      continue
    fi
    alias_rows+="$route"$'\t'"${COMMAND_ROUTE[$key]}"$'\n'
  done

  if [[ -n $alias_rows ]]; then
    echo ""
    echo "Aliases:"
    print_command_table "$(printf '%s' "$alias_rows" | sort)"
  fi
}

markdown_escape() {
  local value="$1"
  value="${value//|/\\|}"
  printf '%s' "$value"
}

show_commands_markdown() {
  local include_all="$1"
  local key=""

  echo "| Command | Binary | Summary |"
  echo "| --- | --- | --- |"

  while IFS= read -r key; do
    [[ -n $key ]] || continue
    printf '| `%s` | `%s` | %s |\n' \
      "$(markdown_escape "${COMMAND_USAGE[$key]}")" \
      "$(markdown_escape "${COMMAND_BINARY[$key]}")" \
      "$(markdown_escape "${COMMAND_SUMMARY[$key]}")"
  done < <(sorted_keys "$include_all")
}

emit_command_records() {
  local include_all="$1"
  local key=""

  while IFS= read -r key; do
    [[ -n $key ]] || continue
    printf '%s\t%s\t%s\t%s\t%s\t%s\t%s\t%s\t%s\t%s\t%s\t%s\n' \
      "${COMMAND_ROUTE[$key]}" \
      "${COMMAND_BINARY[$key]}" \
      "${COMMAND_GROUP[$key]}" \
      "${COMMAND_NAME[$key]}" \
      "${COMMAND_SUMMARY[$key]}" \
      "${COMMAND_REQUIRES_SUDO[$key]}" \
      "${COMMAND_HIDDEN[$key]}" \
      "${COMMAND_ARGS[$key]}" \
      "${COMMAND_EXAMPLES[$key]}" \
      "${COMMAND_ALIASES[$key]}" \
      "${COMMAND_FALLBACK_ROUTE[$key]}" \
      "${COMMAND_USAGE[$key]}"
  done < <(sorted_keys "$include_all")
}

commands_json_filter() {
  cat <<'EOF'
[inputs | split("\t") | {
  route: .[0],
  binary: .[1],
  group: .[2],
  name: .[3],
  summary: .[4],
  requires_sudo: (.[5] == "true"),
  hidden: (.[6] == "true"),
  args: .[7],
  examples: (.[8] | split("|") | map(gsub("^ +| +$"; "")) | map(select(length > 0))),
  aliases: (.[9] | split("|") | map(gsub("^ +| +$"; "")) | map(select(length > 0))),
  filename_route: .[10],
  routes: ([.[0], .[10]] + (.[9] | split("|") | map(gsub("^ +| +$"; "")) | map(select(length > 0))) | unique)
}] | {ok: true, commands: .}
EOF
}

show_commands_json() {
  local include_all="$1"

  emit_command_records "$include_all" | jq -Rn "$(commands_json_filter)"
}

show_commands_check() {
  local failures=0
  local collision=""
  local key=""
  local error=""

  for collision in "${ROUTE_COLLISIONS[@]}"; do
    echo "Route collision: $collision" >&2
    failures=$((failures + 1))
  done

  for key in "${COMMAND_KEYS[@]}"; do
    if [[ ${COMMAND_HAS_SUMMARY[$key]} != "true" ]]; then
      echo "Missing metadata summary: ${COMMAND_BINARY[$key]}" >&2
      failures=$((failures + 1))
    fi

    if [[ -n ${COMMAND_METADATA_ERRORS[$key]} ]]; then
      while IFS= read -r error; do
        [[ -n $error ]] || continue
        echo "Invalid metadata in ${COMMAND_BINARY[$key]}: $error" >&2
        failures=$((failures + 1))
      done < <(pipe_values_as_lines "${COMMAND_METADATA_ERRORS[$key]}")
    fi

    if [[ ! -x $OMARCHY_BIN_DIR/${COMMAND_BINARY[$key]} ]]; then
      echo "Missing binary: ${COMMAND_BINARY[$key]}" >&2
      failures=$((failures + 1))
    fi
  done

  if (( failures > 0 )); then
    echo "Command metadata check failed ($failures issues)" >&2
    return 1
  fi

  echo "Command metadata check passed (${#COMMAND_KEYS[@]} commands)"
}

show_command_json() {
  local key="$1"

  printf '%s\n' "$key" | while IFS= read -r key; do
    printf '%s\t%s\t%s\t%s\t%s\t%s\t%s\t%s\t%s\t%s\t%s\t%s\n' \
      "${COMMAND_ROUTE[$key]}" \
      "${COMMAND_BINARY[$key]}" \
      "${COMMAND_GROUP[$key]}" \
      "${COMMAND_NAME[$key]}" \
      "${COMMAND_SUMMARY[$key]}" \
      "${COMMAND_REQUIRES_SUDO[$key]}" \
      "${COMMAND_HIDDEN[$key]}" \
      "${COMMAND_ARGS[$key]}" \
      "${COMMAND_EXAMPLES[$key]}" \
      "${COMMAND_ALIASES[$key]}" \
      "${COMMAND_FALLBACK_ROUTE[$key]}" \
      "${COMMAND_USAGE[$key]}"
  done | jq -Rn "$(commands_json_filter) | {ok: true, command: .commands[0]}"
}

parse_commands_args() {
  local include_all="false"
  local json="false"
  local markdown="false"
  local check="false"

  shift

  while (( $# > 0 )); do
    case "$1" in
    --all)
      include_all="true"
      ;;
    --json)
      json="true"
      ;;
    --markdown)
      markdown="true"
      ;;
    --check)
      check="true"
      ;;
    --help | -h)
      show_commands_help
      return 0
      ;;
    *)
      echo "Unknown option for omarchy commands: $1" >&2
      show_commands_help >&2
      return 2
      ;;
    esac
    shift
  done

  if [[ $check == "true" ]]; then
    show_commands_check
  elif [[ $json == "true" ]]; then
    show_commands_json "$include_all"
  elif [[ $markdown == "true" ]]; then
    show_commands_markdown "$include_all"
  else
    show_commands "$include_all"
  fi
}

group_exists() {
  local group="$1"
  local key=""

  for key in "${COMMAND_KEYS[@]}"; do
    if [[ ${COMMAND_GROUP[$key]} == "$group" && -n ${COMMAND_NAME[$key]} ]]; then
      return 0
    fi
  done

  return 1
}

show_group_help() {
  local group="$1"
  local include_all="${2:-false}"
  local key=""
  local rows=""
  local title="${GROUP_DESCRIPTIONS[$group]}"

  if [[ -n $title ]]; then
    echo "${group^} commands — $title:"
  else
    echo "${group^} commands:"
  fi

  while IFS= read -r key; do
    [[ -n $key ]] || continue
    rows+="$(command_usage_for_group "$key" "$group")"$'\t'$'\t'"${COMMAND_SUMMARY[$key]}"$'\n'
  done < <(sorted_group_keys "$group" "$include_all")

  if [[ -n $rows ]]; then
    print_command_table "$rows"
  else
    echo "  No documented commands found. Try: omarchy commands --all"
  fi
}

show_prefix_help() {
  local prefix="$1"
  local prefix_with_space="$prefix "
  local key=""
  local rows=""

  while IFS= read -r key; do
    [[ -n $key ]] || continue
    if [[ ${COMMAND_USAGE[$key]} == $prefix_with_space* ]]; then
      rows+="${COMMAND_USAGE[$key]}"$'\t'$'\t'"${COMMAND_SUMMARY[$key]}"$'\n'
    fi
  done < <(sorted_keys false)

  [[ -n $rows ]] || return 1

  echo "${prefix#omarchy } commands:"
  print_command_table "$rows"
}

show_related_commands() {
  local key="$1"
  local group="${COMMAND_GROUP[$key]}"
  local child_key=""
  local rows=""

  [[ -z ${COMMAND_NAME[$key]} ]] || return

  while IFS= read -r child_key; do
    [[ -n $child_key && $child_key != "$key" ]] || continue
    rows+="$(command_usage_for_group "$child_key" "$group")"$'\t'$'\t'"${COMMAND_SUMMARY[$child_key]}"$'\n'
  done < <(sorted_group_keys "$group" false)

  if [[ -n $rows ]]; then
    echo ""
    echo "Related commands:"
    print_command_table "$rows"
  fi
}

show_command_help() {
  local key="$1"
  local aliases="${COMMAND_ALIASES[$key]}"
  local examples="${COMMAND_EXAMPLES[$key]}"
  local args="${COMMAND_ARGS[$key]}"
  local example=""
  local alias=""

  echo "Usage:"
  echo "  ${COMMAND_USAGE[$key]}"
  echo ""
  echo "${COMMAND_SUMMARY[$key]}"

  if [[ -n $args ]]; then
    echo ""
    echo "Arguments:"
    echo "  $args"
  fi

  if [[ -n $examples ]]; then
    echo ""
    echo "Examples:"
    while IFS= read -r example; do
      printf '  %s\n' "$example"
    done < <(examples_as_lines "$examples")
  fi

  if [[ -n $aliases ]]; then
    echo ""
    echo "Aliases:"
    while IFS= read -r alias; do
      printf '  %s\n' "$alias"
    done < <(pipe_values_as_lines "$aliases")
  fi

  echo ""
  echo "Binary:"
  echo "  ${COMMAND_BINARY[$key]}"

  if [[ ${COMMAND_FALLBACK_ROUTE[$key]} != "${COMMAND_ROUTE[$key]}" ]]; then
    echo ""
    echo "Filename route:"
    echo "  ${COMMAND_FALLBACK_ROUTE[$key]}"
  fi

  show_related_commands "$key"
}

resolve_route() {
  local argc="$1"
  shift
  local args=("$@")
  local prefix_count=0
  local route=""
  local key=""

  for (( prefix_count = argc; prefix_count >= 1; prefix_count-- )); do
    route="omarchy $(join_words " " "${args[@]:0:prefix_count}")"
    key="${ROUTE_TO_KEY[$route]}"

    if [[ -n $key ]]; then
      RESOLVED_KEY="$key"
      RESOLVED_COUNT="$prefix_count"
      RESOLVED_ROUTE="$route"
      return 0
    fi
  done

  return 1
}

suggest_command() {
  local first="$1"
  local candidate=""

  for candidate in "${!ROUTE_TO_KEY[@]}"; do
    candidate="${candidate#omarchy }"
    if [[ $candidate == "$first"* ]]; then
      printf '%s' "${candidate%% *}"
      return 0
    fi
  done

  return 1
}

dispatch_fast_or_help() {
  local args=("$@")
  local remaining=()
  local key=""
  local binary_path=""

  if resolve_direct_route "$#" "${args[@]}"; then
    remaining=("${args[@]:DIRECT_RESOLVED_COUNT}")
    binary_path="$OMARCHY_BIN_DIR/$DIRECT_RESOLVED_BINARY"

    if (( ${#remaining[@]} > 0 )) && [[ ${remaining[0]} == "--help" || ${remaining[0]} == "-h" ]]; then
      if ! load_command_by_binary "$DIRECT_RESOLVED_BINARY"; then
        echo "Binary is missing or not executable: $DIRECT_RESOLVED_BINARY" >&2
        return 127
      fi

      if (( DIRECT_RESOLVED_COUNT == 1 )); then
        load_child_commands_by_binary "$DIRECT_RESOLVED_BINARY"
      fi

      key="${BINARY_TO_KEY[$DIRECT_RESOLVED_BINARY]}"
      if [[ " ${remaining[*]} " == *" --json "* ]]; then
        show_command_json "$key"
      else
        show_command_help "$key"
      fi
      return 0
    fi

    if (( ${#remaining[@]} == 0 )); then
      load_command_by_binary "$DIRECT_RESOLVED_BINARY"
      key="${BINARY_TO_KEY[$DIRECT_RESOLVED_BINARY]}"

      if [[ -n $key ]] && command_requires_args "$key"; then
        if (( DIRECT_RESOLVED_COUNT == 1 )) && group_has_child_commands "$1"; then
          load_group_commands "$1"
          show_group_help "$1"
        else
          show_command_help "$key"
        fi
        return 0
      fi
    fi

    exec "$binary_path" "${remaining[@]}"
  fi

  if (( $# == 1 )) && group_has_binary_commands "$1"; then
    load_group_commands "$1"
    show_group_help "$1"
    return 0
  fi

  if (( $# >= 2 )) && [[ $2 == "--help" || $2 == "-h" ]] && group_has_binary_commands "$1"; then
    load_group_commands "$1"
    show_group_help "$1"
    return 0
  fi

  load_commands
  dispatch_or_help "$@"
}

dispatch_or_help() {
  local args=("$@")
  local remaining=()
  local key=""
  local binary_path=""
  local suggestion=""

  if resolve_route "$#" "${args[@]}"; then
    key="$RESOLVED_KEY"
    remaining=("${args[@]:RESOLVED_COUNT}")

    if (( ${#remaining[@]} > 0 )) && [[ ${remaining[0]} == "--help" || ${remaining[0]} == "-h" ]]; then
      if [[ " ${remaining[*]} " == *" --json "* ]]; then
        show_command_json "$key"
      else
        show_command_help "$key"
      fi
      return 0
    fi

    binary_path="$OMARCHY_BIN_DIR/${COMMAND_BINARY[$key]}"
    if [[ ! -x $binary_path ]]; then
      echo "Binary is missing or not executable: ${COMMAND_BINARY[$key]}" >&2
      return 127
    fi

    if (( ${#remaining[@]} == 0 )) && command_requires_args "$key"; then
      if (( RESOLVED_COUNT == 1 )) && group_exists "$1"; then
        show_group_help "$1"
      else
        show_command_help "$key"
      fi
      return 0
    fi

    exec "$binary_path" "${remaining[@]}"
  fi

  if (( $# == 1 )) && group_exists "$1"; then
    show_group_help "$1"
    return 0
  fi

  if (( $# >= 2 )) && [[ $2 == "--help" || $2 == "-h" ]] && group_exists "$1"; then
    show_group_help "$1"
    return 0
  fi

  if show_prefix_help "omarchy ${args[*]}"; then
    return 0
  fi

  echo "Unknown Omarchy command: omarchy ${args[*]}" >&2
  suggestion=$(suggest_command "${args[0]}")
  if [[ -n $suggestion ]]; then
    echo "Did you mean: omarchy $suggestion ?" >&2
  fi
  echo "Run 'omarchy commands --all' to discover available commands." >&2
  return 127
}

main() {
  if (( $# == 0 )); then
    show_main_help
    return 0
  fi

  case "$1" in
  --help | -h)
    show_main_help
    ;;
  commands)
    load_commands
    parse_commands_args "$@"
    ;;
  *)
    dispatch_fast_or_help "$@"
    ;;
  esac
}

main "$@"