/**
 * G-code command descriptions for hover tooltips.
 * Adapted from gcode-lang-codemirror (MIT):
 * https://github.com/oneislandearth/gcode-lang-codemirror
 */
export const GCodeCommands = {
  G0: 'Rapid movement',
  G1: 'Linear movement',
  G2: 'Clockwise arc movement',
  G3: 'Counter-clockwise arc movement',
  G4: 'Dwell (wait P milliseconds or S seconds)',
  G10: 'Retract (firmware retraction)',
  G11: 'Recover (firmware retraction)',
  G20: 'Set units to inches',
  G21: 'Set units to millimeters',
  G28: 'Home axes',
  G29: 'Automatic bed leveling',
  G80: 'Mesh bed leveling (Prusa) / cancel canned cycle',
  G90: 'Use absolute positioning',
  G91: 'Use relative positioning',
  G92: 'Set current position',
  M0: 'Stop after the buffer is empty',
  M17: 'Enable stepper motors',
  M18: 'Disable stepper motors',
  M20: 'List SD card files',
  M21: 'Initialize (mount) SD card',
  M22: 'Release (unmount) SD card',
  M23: 'Select SD file for printing',
  M24: 'Start / resume SD print',
  M25: 'Pause SD print',
  M26: 'Set SD position in bytes',
  M27: 'Report SD print status',
  M28: 'Start writing to SD card',
  M29: 'Stop writing to SD card',
  M40: 'Eject part',
  M42: 'Set pin state / stop if out of material',
  M73: 'Set print progress',
  M80: 'Turn ATX power on',
  M81: 'Turn ATX power off',
  M82: 'Extruder absolute mode',
  M83: 'Extruder relative mode',
  M84: 'Disable idle hold / steppers',
  M92: 'Set steps per unit',
  M104: 'Set extruder temperature',
  M105: 'Get temperatures',
  M106: 'Set fan speed',
  M107: 'Turn fan off',
  M109: 'Set extruder temperature and wait',
  M110: 'Set current line number',
  M112: 'Emergency stop',
  M114: 'Get current position',
  M115: 'Get firmware version and capabilities',
  M117: 'Set LCD / status message',
  M119: 'Get endstop status',
  M140: 'Set bed temperature',
  M141: 'Set chamber temperature',
  M190: 'Set bed temperature and wait',
  M191: 'Set chamber temperature and wait',
  M220: 'Set feedrate percentage',
  M221: 'Set flow percentage',
  M300: 'Beep (S Hz for P ms)',
  M600: 'Filament change',
  M601: 'Pause print (Prusa)',
  M862: 'G-code compatibility check (Prusa)',
  M900: 'Linear / pressure advance (K)',
  T0: 'Select tool / extruder 0',
  T1: 'Select tool / extruder 1',
  X: 'X axis',
  Y: 'Y axis',
  Z: 'Z axis',
  E: 'Extruder axis',
  A: 'A axis',
  B: 'B axis',
  C: 'C axis',
  F: 'Feedrate',
  S: 'Speed, temperature, or value',
  P: 'Parameter / time',
  I: 'Arc X offset / parameter',
  J: 'Arc Y offset / parameter',
  K: 'Arc Z offset / linear advance',
  R: 'Arc radius / RPM'
}

export function lookupGCodeCommand(word) {
  const upper = String(word || '').toUpperCase()
  const commandMatch = upper.match(/^([GMT])0*(\d+)(\.\d+)?/)
  if (commandMatch) {
    const base = commandMatch[1] + String(parseInt(commandMatch[2], 10))
    const canonical = base + (commandMatch[3] || '')
    return (
      GCodeCommands[canonical] ||
      GCodeCommands[base] ||
      GCodeCommands[upper] ||
      null
    )
  }
  const axis = upper.charAt(0)
  if (axis && GCodeCommands[axis]) {
    return GCodeCommands[axis]
  }
  return null
}