'use strict';

const path = require('path');
const { pathToFileURL } = require('url');

const SHEET_WIDTH = 1536;
const SHEET_HEIGHT = 1872;
const CELL_WIDTH = 192;
const CELL_HEIGHT = 208;
const SHEET_URL = pathToFileURL(path.join(__dirname, 'maple', 'spritesheet.webp')).href;

function cell(row, col, facingBasis) {
  return {
    sheetUrl: SHEET_URL,
    sheetWidth: SHEET_WIDTH,
    sheetHeight: SHEET_HEIGHT,
    frameX: col * CELL_WIDTH,
    frameY: row * CELL_HEIGHT,
    frameWidth: CELL_WIDTH,
    frameHeight: CELL_HEIGHT,
    facingBasis: facingBasis || 'left'
  };
}

function rowFrames(row, startCol, count, facingBasis) {
  const frames = [];
  for (let index = 0; index < count; index += 1) {
    frames.push(cell(row, startCol + index, facingBasis));
  }
  return frames;
}

module.exports = {
  width: 48,
  height: 52,
  clips: {
    idle0: {
      fps: 1.4,
      frames: rowFrames(0, 0, 6, 'left')
    },
    idle1: {
      fps: 1.4,
      frames: rowFrames(6, 0, 6, 'left')
    },
    idle2: {
      fps: 1.4,
      frames: rowFrames(7, 0, 6, 'left')
    },
    idle3: {
      fps: 1.4,
      frames: rowFrames(8, 0, 6, 'left')
    },
    walkRight: {
      fps: 4.4,
      frames: rowFrames(1, 0, 8, 'right')
    },
    walkLeft: {
      fps: 4.4,
      frames: rowFrames(2, 0, 8, 'left')
    },
    inspectLeft: {
      fps: 2.2,
      frames: rowFrames(3, 0, 4, 'left')
    },
    inspectRight: {
      fps: 2.2,
      frames: rowFrames(3, 0, 4, 'left')
    },
    pounceLeft: {
      fps: 4,
      frames: rowFrames(4, 0, 5, 'left')
    },
    pounceRight: {
      fps: 4,
      frames: rowFrames(4, 0, 5, 'left')
    },
    sleep: {
      fps: 1,
      frames: [
        cell(5, 3, 'left')
      ]
    },
    sleepWakeLeft: {
      fps: 2.6,
      frames: rowFrames(5, 4, 3, 'left'),
      nextClip: 'idle0'
    },
    sleepWakeRight: {
      fps: 2.6,
      frames: rowFrames(5, 4, 3, 'left'),
      nextClip: 'idle0'
    },
    transitionIdleWalkLeft: {
      fps: 3,
      frames: rowFrames(2, 0, 3, 'left'),
      nextClip: 'walkLeft'
    },
    transitionIdleWalkRight: {
      fps: 3,
      frames: rowFrames(1, 0, 3, 'right'),
      nextClip: 'walkRight'
    },
    transitionIdleSleep: {
      fps: 2.8,
      frames: rowFrames(5, 0, 4, 'left'),
      nextClip: 'sleep'
    }
  },
  transitions: {
    'idle0->walkLeft': 'transitionIdleWalkLeft',
    'idle1->walkLeft': 'transitionIdleWalkLeft',
    'idle2->walkLeft': 'transitionIdleWalkLeft',
    'idle3->walkLeft': 'transitionIdleWalkLeft',
    'idle0->walkRight': 'transitionIdleWalkRight',
    'idle1->walkRight': 'transitionIdleWalkRight',
    'idle2->walkRight': 'transitionIdleWalkRight',
    'idle3->walkRight': 'transitionIdleWalkRight',
    'idle0->sleep': 'transitionIdleSleep',
    'idle1->sleep': 'transitionIdleSleep',
    'idle2->sleep': 'transitionIdleSleep',
    'idle3->sleep': 'transitionIdleSleep',
    'inspectLeft->walkLeft': 'transitionIdleWalkLeft',
    'inspectRight->walkRight': 'transitionIdleWalkRight',
    'sleep->idle0': 'sleepWakeLeft',
    'sleep->idle1': 'sleepWakeLeft',
    'sleep->idle2': 'sleepWakeLeft',
    'sleep->idle3': 'sleepWakeLeft',
    'sleep->walkLeft': 'sleepWakeLeft',
    'sleep->walkRight': 'sleepWakeRight',
    'sleep->inspectLeft': 'sleepWakeLeft',
    'sleep->inspectRight': 'sleepWakeRight',
    'sleep->pounceLeft': 'sleepWakeLeft',
    'sleep->pounceRight': 'sleepWakeRight'
  }
};