#!/usr/bin/env bash
set -euo pipefail

if ! command -v hyprctl >/dev/null 2>&1; then
  echo "hyprctl not found" >&2
  exit 1
fi

if ! command -v jq >/dev/null 2>&1; then
  hyprctl notify 0 2500 "rgb(ed8796)" "hypr-show-binds: jq is required" >/dev/null 2>&1 || true
  exit 1
fi

binds_json="$(hyprctl -j binds 2>/dev/null || true)"
if [[ -z "$binds_json" ]]; then
  hyprctl notify 0 2500 "rgb(ed8796)" "hypr-show-binds: failed to read binds" >/dev/null 2>&1 || true
  exit 1
fi

tmp_dir="$(mktemp -d)"
trap 'rm -rf "$tmp_dir"' EXIT
menu_file="$tmp_dir/menu.tsv"
data_file="$tmp_dir/data.tsv"

join_mods() {
  local parts=("$@")
  local out=""
  local p
  for p in "${parts[@]}"; do
    if [[ -z "$out" ]]; then
      out="$p"
    else
      out="${out}+${p}"
    fi
  done
  printf '%s' "$out"
}

ordered_mods() {
  local -n seen_ref="$1"
  local ordered=()
  local key
  for key in SUPER CTRL SHIFT ALT CAPS MOD2 MOD3 MOD5; do
    if [[ -n "${seen_ref[$key]:-}" ]]; then
      ordered+=("$key")
    fi
  done
  join_mods "${ordered[@]}"
}

modmask_to_human() {
  local raw="$1"
  local mask="${raw%%.*}"
  local -A seen=()

  [[ -n "$mask" && "$mask" =~ ^[0-9]+$ ]] || { printf ''; return; }

  (( mask & 64 )) && seen["SUPER"]=1
  (( mask & 4 )) && seen["CTRL"]=1
  (( mask & 1 )) && seen["SHIFT"]=1
  (( mask & 8 )) && seen["ALT"]=1
  (( mask & 2 )) && seen["CAPS"]=1
  (( mask & 16 )) && seen["MOD2"]=1
  (( mask & 32 )) && seen["MOD3"]=1
  (( mask & 128 )) && seen["MOD5"]=1

  ordered_mods seen
}

mods_string_to_human() {
  local raw="${1^^}"
  local expanded="$raw"
  local token mapped
  local -A seen=()

  # Expand likely glued tokens from different output styles.
  for token in SUPER CTRL CONTROL SHIFT ALT CAPS WIN LOGO MOD1 MOD2 MOD3 MOD4 MOD5; do
    expanded="${expanded//${token}/ ${token} }"
  done
  expanded="${expanded//[^A-Z0-9]/ }"

  for token in $expanded; do
    mapped=""
    case "$token" in
      CONTROL) mapped="CTRL" ;;
      WIN|LOGO|MOD4) mapped="SUPER" ;;
      MOD1) mapped="ALT" ;;
      SUPER|CTRL|SHIFT|ALT|CAPS|MOD2|MOD3|MOD5) mapped="$token" ;;
    esac
    if [[ -n "$mapped" ]]; then
      seen["$mapped"]=1
    fi
  done

  ordered_mods seen
}

mods_to_human() {
  local raw="$1"
  if [[ -z "$raw" || "$raw" == "0" ]]; then
    printf ''
    return
  fi
  if [[ "$raw" =~ ^[0-9]+([.][0-9]+)?$ ]]; then
    modmask_to_human "$raw"
  else
    mods_string_to_human "$raw"
  fi
}

printf '%s' "$binds_json" | jq -r '
  [ .[] | {
      submap: ((.submap // "global" | tostring) | if . == "" then "global" else . end),
      mods: ((.mods // .modmask // "" | tostring)),
      key: ((.key // .keycode // .mouse // "unknown") | tostring),
      dispatcher: ((.dispatcher // .handler // "") | tostring),
      arg: ((.arg // .args // "") | tostring)
    }
  ]
  | sort_by((if .submap == "global" then 0 else 1 end), .submap, .key, .mods, .dispatcher, .arg)
  | to_entries[]
  | [(.key + 1), .value.submap, .value.mods, .value.key, .value.dispatcher, .value.arg]
  | @tsv
' | while IFS=$'\t' read -r idx submap raw_mods key dispatcher arg; do
  id="$(printf '%04d' "$idx")"
  mods="$(mods_to_human "$raw_mods")"
  combo="$key"
  if [[ -n "$mods" ]]; then
    combo="${mods}+${key}"
  fi

  if [[ -n "$arg" ]]; then
    desc="[${submap}] ${combo} -> ${dispatcher} ${arg}"
  else
    desc="[${submap}] ${combo} -> ${dispatcher}"
  fi

  printf '%s\t%s\n' "$id" "$desc" >> "$menu_file"
  printf '%s\t%s\t%s\t%s\n' "$id" "$dispatcher" "$arg" "$combo" >> "$data_file"
done

if [[ ! -s "$menu_file" ]]; then
  hyprctl notify 0 2500 "rgb(ed8796)" "hypr-show-binds: no binds found" >/dev/null 2>&1 || true
  exit 1
fi

selection=""
if command -v owlry >/dev/null 2>&1; then
  selection="$(cut -f1,2 "$menu_file" | owlry -m dmenu --prompt 'Hypr binds' 2>/dev/null || true)"
elif command -v fuzzel >/dev/null 2>&1; then
  selection="$(cut -f1,2 "$menu_file" | fuzzel --dmenu --prompt 'Hypr binds> ' 2>/dev/null || true)"
elif command -v kitty >/dev/null 2>&1; then
  kitty -e sh -lc "cat '$menu_file' | cut -f2 | less -R"
  exit 0
else
  hyprctl notify 0 2500 "rgb(ed8796)" "hypr-show-binds: no menu launcher found" >/dev/null 2>&1 || true
  exit 1
fi

if [[ -z "$selection" ]]; then
  exit 0
fi

selected_id="${selection%%$'\t'*}"
if [[ -z "$selected_id" ]]; then
  exit 0
fi

selected="$(awk -F '\t' -v id="$selected_id" '$1 == id {print; exit}' "$data_file")"
if [[ -z "$selected" ]]; then
  hyprctl notify 0 2500 "rgb(ed8796)" "hypr-show-binds: selection lookup failed" >/dev/null 2>&1 || true
  exit 1
fi

dispatcher="$(printf '%s' "$selected" | cut -f2)"
arg="$(printf '%s' "$selected" | cut -f3)"
combo="$(printf '%s' "$selected" | cut -f4)"

if [[ -z "$dispatcher" ]]; then
  hyprctl notify 0 2500 "rgb(ed8796)" "hypr-show-binds: bind has no dispatcher" >/dev/null 2>&1 || true
  exit 1
fi

if [[ -z "$arg" ]]; then
  if hyprctl dispatch "$dispatcher" "_" >/dev/null 2>&1; then
    hyprctl notify 0 1800 "rgb(a6da95)" "Ran: ${combo} -> ${dispatcher}" >/dev/null 2>&1 || true
  else
    hyprctl notify 0 2600 "rgb(ed8796)" "Failed: ${dispatcher}" >/dev/null 2>&1 || true
    exit 1
  fi
else
  if [[ "$arg" == -* ]]; then
    if hyprctl dispatch -- "$dispatcher" "$arg" >/dev/null 2>&1; then
      hyprctl notify 0 1800 "rgb(a6da95)" "Ran: ${combo} -> ${dispatcher}" >/dev/null 2>&1 || true
    else
      hyprctl notify 0 2600 "rgb(ed8796)" "Failed: ${dispatcher} ${arg}" >/dev/null 2>&1 || true
      exit 1
    fi
  else
    if hyprctl dispatch "$dispatcher" "$arg" >/dev/null 2>&1; then
      hyprctl notify 0 1800 "rgb(a6da95)" "Ran: ${combo} -> ${dispatcher}" >/dev/null 2>&1 || true
    else
      hyprctl notify 0 2600 "rgb(ed8796)" "Failed: ${dispatcher} ${arg}" >/dev/null 2>&1 || true
      exit 1
    fi
  fi
fi