'use strict'

function Controller () {
  this.menu = { default: {} }
  this.mode = 'default'

  this.app = require('electron').remote.app

  this.start = function () {
  }

  this.add = function (mode, cat, label, fn, accelerator) {
    if (!this.menu[mode]) { this.menu[mode] = {} }
    if (!this.menu[mode][cat]) { this.menu[mode][cat] = {} }
    this.menu[mode][cat][label] = { fn: fn, accelerator: accelerator }
    console.log(`${mode}/${cat}/${label} <${accelerator}>`)
  }

  this.add_role = function (mode, cat, label) {
    if (!this.menu[mode]) { this.menu[mode] = {} }
    if (!this.menu[mode][cat]) { this.menu[mode][cat] = {} }
    this.menu[mode][cat][label] = { role: label }
  }

  this.set = function (mode = 'default') {
    this.mode = mode
    this.commit()
  }

  this.format = function () {
    let f = []
    let m = this.menu[this.mode]
    for (const cat in m) {
      let submenu = []
      for (const name in m[cat]) {
        let option = m[cat][name]
        if (option.role) {
          submenu.push({ role: option.role })
        } else {
          submenu.push({ label: name, accelerator: option.accelerator, click: option.fn })
        }
      }
      f.push({ label: cat, submenu: submenu })
    }
    return f
  }

  this.commit = function () {
    this.app.inject_menu(this.format())
  }

  this.docs = function () {
    console.log('Generating docs..')
    let svg = this.generate_svg(this.format())
    let txt = this.documentation(this.format())
    dialog.showSaveDialog((fileName) => {
      if (fileName === undefined) { return }
      fileName = fileName.substr(-4, 4) != '.svg' ? fileName + '.svg' : fileName
      fs.writeFile(fileName, svg)
      fs.writeFile(fileName.replace('.svg', '.md'), txt)
    })
  }

  this.generate_svg = function (m) {
    let html = ''

    for (const id in this.layout) {
      let key = this.layout[id]
      let acc = this.accelerator_for_key(key.name, m)
      html += `<rect x="${key.x + 1}" y="${key.y + 1}" width="${key.width - 2}" height="${key.height - 2}" rx="4" ry="4" title="${key.name}" stroke="#ccc" fill="none" stroke-width="1"/>`
      html += `<rect x="${key.x + 3}" y="${key.y + 3}" width="${key.width - 6}" height="${key.height - 12}" rx="3" ry="3" title="${key.name}" stroke="${acc.basic ? '#000' : acc.ctrl ? '#ccc' : '#fff'}" fill="${acc.basic ? '#000' : acc.ctrl ? '#ccc' : '#fff'}" stroke-width="1"/>`
      html += `<text x="${key.x + 10}" y="${key.y + 20}" font-size='11' font-family='Input Mono' stroke-width='0' fill='${acc.basic ? '#fff' : '#000'}'>${key.name.toUpperCase()}</text>`
      html += acc && acc.basic ? `<text x="${key.x + 10}" y="${key.y + 35}" font-size='7' font-family='Input Mono' stroke-width='0' fill='#fff'>${acc.basic}</text>` : ''
      html += acc && acc.ctrl ? `<text x="${key.x + 10}" y="${key.y + 45}" font-size='7' font-family='Input Mono' stroke-width='0' fill='#000'>${acc.ctrl}</text>` : ''
    }
    return `<?xml version="1.0" encoding="UTF-8" standalone="no"?><svg xmlns:dc="http://purl.org/dc/elements/1.1/" xmlns:cc="http://creativecommons.org/ns#" xmlns:rdf="http://www.w3.org/1999/02/22-rdf-syntax-ns#" xmlns:svg="http://www.w3.org/2000/svg" xmlns="http://www.w3.org/2000/svg" width="900" height="300" version="1.0" style="fill:none;stroke:black;stroke-width:2px;">${html}</svg>`
  }

  this.documentation = function () {
    let txt = ''

    txt += this.documentation_for_mode('default', this.menu.default)

    for (name in this.menu) {
      if (name == 'default') { continue }
      txt += this.documentation_for_mode(name, this.menu[name])
    }
    return txt
  }

  this.documentation_for_mode = function (name, mode) {
    let txt = `## ${name} Mode\n\n`

    for (const id in mode) {
      if (id == '*') { continue }
      txt += `### ${id}\n`
      for (const name in mode[id]) {
        let option = mode[id][name]
        txt += `- ${name}: \`${option.accelerator}\`\n`
      }
      txt += '\n'
    }

    return txt + '\n'
  }

  this.accelerator_for_key = function (key, menu) {
    let acc = { basic: null, ctrl: null }
    for (const cat in menu) {
      let options = menu[cat]
      for (const id in options.submenu) {
        let option = options.submenu[id]; if (option.role) { continue }
        acc.basic = (option.accelerator.toLowerCase() == key.toLowerCase()) ? option.label.toUpperCase().replace('TOGGLE ', '').substr(0, 8).trim() : acc.basic
        acc.ctrl = (option.accelerator.toLowerCase() == ('CmdOrCtrl+' + key).toLowerCase()) ? option.label.toUpperCase().replace('TOGGLE ', '').substr(0, 8).trim() : acc.ctrl
      }
    }
    return acc
  }

  this.layout = [
    { x: 0, y: 0, width: 60, height: 60, name: 'esc' },
    { x: 60, y: 0, width: 60, height: 60, name: '1' },
    { x: 120, y: 0, width: 60, height: 60, name: '2' },
    { x: 180, y: 0, width: 60, height: 60, name: '3' },
    { x: 240, y: 0, width: 60, height: 60, name: '4' },
    { x: 300, y: 0, width: 60, height: 60, name: '5' },
    { x: 360, y: 0, width: 60, height: 60, name: '6' },
    { x: 420, y: 0, width: 60, height: 60, name: '7' },
    { x: 480, y: 0, width: 60, height: 60, name: '8' },
    { x: 540, y: 0, width: 60, height: 60, name: '9' },
    { x: 600, y: 0, width: 60, height: 60, name: '0' },
    { x: 660, y: 0, width: 60, height: 60, name: '-' },
    { x: 720, y: 0, width: 60, height: 60, name: 'plus' },
    { x: 780, y: 0, width: 120, height: 60, name: 'backspace' },
    { x: 0, y: 60, width: 90, height: 60, name: 'tab' },
    { x: 90, y: 60, width: 60, height: 60, name: 'q' },
    { x: 150, y: 60, width: 60, height: 60, name: 'w' },
    { x: 210, y: 60, width: 60, height: 60, name: 'e' },
    { x: 270, y: 60, width: 60, height: 60, name: 'r' },
    { x: 330, y: 60, width: 60, height: 60, name: 't' },
    { x: 390, y: 60, width: 60, height: 60, name: 'y' },
    { x: 450, y: 60, width: 60, height: 60, name: 'u' },
    { x: 510, y: 60, width: 60, height: 60, name: 'i' },
    { x: 570, y: 60, width: 60, height: 60, name: 'o' },
    { x: 630, y: 60, width: 60, height: 60, name: 'p' },
    { x: 690, y: 60, width: 60, height: 60, name: '[' },
    { x: 750, y: 60, width: 60, height: 60, name: ']' },
    { x: 810, y: 60, width: 90, height: 60, name: '|' },
    { x: 0, y: 120, width: 105, height: 60, name: 'caps' },
    { x: 105, y: 120, width: 60, height: 60, name: 'a' },
    { x: 165, y: 120, width: 60, height: 60, name: 's' },
    { x: 225, y: 120, width: 60, height: 60, name: 'd' },
    { x: 285, y: 120, width: 60, height: 60, name: 'f' },
    { x: 345, y: 120, width: 60, height: 60, name: 'g' },
    { x: 405, y: 120, width: 60, height: 60, name: 'h' },
    { x: 465, y: 120, width: 60, height: 60, name: 'j' },
    { x: 525, y: 120, width: 60, height: 60, name: 'k' },
    { x: 585, y: 120, width: 60, height: 60, name: 'l' },
    { x: 645, y: 120, width: 60, height: 60, name: ';' },
    { x: 705, y: 120, width: 60, height: 60, name: "'" },
    { x: 765, y: 120, width: 135, height: 60, name: 'enter' },
    { x: 0, y: 180, width: 135, height: 60, name: 'shift' },
    { x: 135, y: 180, width: 60, height: 60, name: 'z' },
    { x: 195, y: 180, width: 60, height: 60, name: 'x' },
    { x: 255, y: 180, width: 60, height: 60, name: 'c' },
    { x: 315, y: 180, width: 60, height: 60, name: 'v' },
    { x: 375, y: 180, width: 60, height: 60, name: 'b' },
    { x: 435, y: 180, width: 60, height: 60, name: 'n' },
    { x: 495, y: 180, width: 60, height: 60, name: 'm' },
    { x: 555, y: 180, width: 60, height: 60, name: ',' },
    { x: 615, y: 180, width: 60, height: 60, name: '.' },
    { x: 675, y: 180, width: 60, height: 60, name: '/' },
    { x: 735, y: 180, width: 165, height: 60, name: 'capslock' },
    { x: 0, y: 240, width: 90, height: 60, name: 'ctrl' },
    { x: 90, y: 240, width: 90, height: 60, name: 'cmd' },
    { x: 180, y: 240, width: 90, height: 60, name: 'alt' },
    { x: 270, y: 240, width: 270, height: 60, name: 'space' },
    { x: 810, y: 240, width: 90, height: 60, name: 'ctrl' },
    { x: 720, y: 240, width: 90, height: 60, name: 'pn' },
    { x: 630, y: 240, width: 90, height: 60, name: 'fn' },
    { x: 540, y: 240, width: 90, height: 60, name: 'alt' }
  ]
}

module.exports = new Controller()