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1'use strict'
2var objectAssign = require('object-assign')
3
4module.exports = function () {
5  return ThemeSetProto.newThemeSet()
6}
7
8var ThemeSetProto = {}
9
10ThemeSetProto.baseTheme = require('./base-theme.js')
11
12ThemeSetProto.newTheme = function (parent, theme) {
13  if (!theme) {
14    theme = parent
15    parent = this.baseTheme
16  }
17  return objectAssign({}, parent, theme)
18}
19
20ThemeSetProto.getThemeNames = function () {
21  return Object.keys(this.themes)
22}
23
24ThemeSetProto.addTheme = function (name, parent, theme) {
25  this.themes[name] = this.newTheme(parent, theme)
26}
27
28ThemeSetProto.addToAllThemes = function (theme) {
29  var themes = this.themes
30  Object.keys(themes).forEach(function (name) {
31    objectAssign(themes[name], theme)
32  })
33  objectAssign(this.baseTheme, theme)
34}
35
36ThemeSetProto.getTheme = function (name) {
37  if (!this.themes[name]) throw this.newMissingThemeError(name)
38  return this.themes[name]
39}
40
41ThemeSetProto.setDefault = function (opts, name) {
42  if (name == null) {
43    name = opts
44    opts = {}
45  }
46  var platform = opts.platform == null ? 'fallback' : opts.platform
47  var hasUnicode = !!opts.hasUnicode
48  var hasColor = !!opts.hasColor
49  if (!this.defaults[platform]) this.defaults[platform] = {true: {}, false: {}}
50  this.defaults[platform][hasUnicode][hasColor] = name
51}
52
53ThemeSetProto.getDefault = function (opts) {
54  if (!opts) opts = {}
55  var platformName = opts.platform || process.platform
56  var platform = this.defaults[platformName] || this.defaults.fallback
57  var hasUnicode = !!opts.hasUnicode
58  var hasColor = !!opts.hasColor
59  if (!platform) throw this.newMissingDefaultThemeError(platformName, hasUnicode, hasColor)
60  if (!platform[hasUnicode][hasColor]) {
61    if (hasUnicode && hasColor && platform[!hasUnicode][hasColor]) {
62      hasUnicode = false
63    } else if (hasUnicode && hasColor && platform[hasUnicode][!hasColor]) {
64      hasColor = false
65    } else if (hasUnicode && hasColor && platform[!hasUnicode][!hasColor]) {
66      hasUnicode = false
67      hasColor = false
68    } else if (hasUnicode && !hasColor && platform[!hasUnicode][hasColor]) {
69      hasUnicode = false
70    } else if (!hasUnicode && hasColor && platform[hasUnicode][!hasColor]) {
71      hasColor = false
72    } else if (platform === this.defaults.fallback) {
73      throw this.newMissingDefaultThemeError(platformName, hasUnicode, hasColor)
74    }
75  }
76  if (platform[hasUnicode][hasColor]) {
77    return this.getTheme(platform[hasUnicode][hasColor])
78  } else {
79    return this.getDefault(objectAssign({}, opts, {platform: 'fallback'}))
80  }
81}
82
83ThemeSetProto.newMissingThemeError = function newMissingThemeError (name) {
84  var err = new Error('Could not find a gauge theme named "' + name + '"')
85  Error.captureStackTrace.call(err, newMissingThemeError)
86  err.theme = name
87  err.code = 'EMISSINGTHEME'
88  return err
89}
90
91ThemeSetProto.newMissingDefaultThemeError = function newMissingDefaultThemeError (platformName, hasUnicode, hasColor) {
92  var err = new Error(
93    'Could not find a gauge theme for your platform/unicode/color use combo:\n' +
94    '    platform = ' + platformName + '\n' +
95    '    hasUnicode = ' + hasUnicode + '\n' +
96    '    hasColor = ' + hasColor)
97  Error.captureStackTrace.call(err, newMissingDefaultThemeError)
98  err.platform = platformName
99  err.hasUnicode = hasUnicode
100  err.hasColor = hasColor
101  err.code = 'EMISSINGTHEME'
102  return err
103}
104
105ThemeSetProto.newThemeSet = function () {
106  var themeset = function (opts) {
107    return themeset.getDefault(opts)
108  }
109  return objectAssign(themeset, ThemeSetProto, {
110    themes: objectAssign({}, this.themes),
111    baseTheme: objectAssign({}, this.baseTheme),
112    defaults: JSON.parse(JSON.stringify(this.defaults || {}))
113  })
114}
115
116