import { computed, nextTick, onMounted, reactive, watch } from 'https://cdnjs.cloudflare.com/ajax/libs/vue/3.0.2/vue.esm-browser.js';
import * as Util from 'https://wws.jp/_export/code/vuejs/vue3/form_utils?codeblock=0';

const Ace9Form = {
  template: `
    <div :class="computedControlWrapperClasses" :style="controlWrapperStyles">
      <pre :id="state.editorId" :style="editorStyle"></pre>
      <div :class="computedMessageWrapperClasses" :style="messageWrapperStyles">
        <template v-for="msg in errors">
          <span>{{ msg }}</span><br>
        </template>
      </div>
    </div>
  `,
  props: {
    value:                 { type: String },
    type:                  { type: String, default: 'text' },
    height:                { type: String, default: '300' },
    errors:                { type: Array,  default: [] },
    controlWrapperClasses: { type: Array,  default: [] },
    controlWrapperStyles:  { type: Object, default: {} },
    controlClasses:        { type: Array,  default: [] },
    controlStyles:         { type: Object, default: {} },
    messageWrapperClasses: { type: Array,  default: [] },
    messageWrapperStyles:  { type: Object, default: {} },
    controlErrorClass:     { type: String, default: 'has-error' },
    messageErrorClass:     { type: String, default: 'text-danger' },
  },

  setup(props, context) {

    const state = reactive({
      editorId: 'ace' + Util.getUniqStr(),
      editor: null
    })

    const computedControlWrapperClasses = computed(() => {
      return Util.getWrapClass(
        props.errors,
        props.controlWrapperClasses,
        props.controlErrorClass
      )
    })

    const computedMessageWrapperClasses = computed(() => {
      return Util.getWrapClass(
        props.errors,
        props.messageWrapperClasses,
        props.messageErrorClass
      )
    })
    
    const editorStyle = computed(() => {
      return {
        position:   'relative',
        overflow:   'hidden',
        font:       '12px/normal Monaco, Menlo, Ubuntu Mono, Consolas, source-code-pro, monospace',
        direction:  'ltr',
        textAlign:  'left',
        '-webkit-tap-highlight-color': 'rgba(0, 0, 0, 0)',
        height: props.height + 'px'
      }
    })

    const ace9src     = "https://cdnjs.cloudflare.com/ajax/libs/ace/1.4.12/ace.js";
    const crossorigin = "anonymous";

    onMounted(() => Util.appendScript(ace9src, null, crossorigin, initAce9))

    function initAce9() {
      state.editor = ace.edit(state.editorId);
      state.editor.setTheme("ace/theme/crimson_editor");
      state.editor.setValue(props.value);
      state.editor.session.setUseSoftTabs(true);
      state.editor.session.setTabSize(2);
      /* https://ace.c9.io/#nav=api&api=editor */
      state.editor.on('blur', () => {
        context.emit('update:value', state.editor.getValue())
      });

      /* 入力中確定前文字列のフォントサイズを調整 */
      const styleSheetElement = document.createElement('style');
      const cssRuleString = `
        #${state.editorId} textarea:focus {
          font-size: 12px;
          border: none;
        }`;
      document.head.appendChild(styleSheetElement);
      const sheet = styleSheetElement.sheet;
      sheet.insertRule(cssRuleString, sheet.cssRules.length);
    }
    
    watch(props, (newProp, oldProp) => {
      state.editor.setValue(newProp.value);
      setLang(newProp.type)
    })
    
    function setLang(type) {
      if (type === 'json') {
        state.editor.session.setMode("ace/mode/json");
        state.editor.session.setUseSoftTabs(true);
        state.editor.session.setTabSize(2);
        state.editor.session.setUseSoftTabs(true);
      } else if (type === 'html') {
        state.editor.session.setMode("ace/mode/html");
        state.editor.session.setUseSoftTabs(true);
        state.editor.session.setTabSize(2);
        state.editor.session.setUseSoftTabs(true);
      } else if (type === 'css') {
        state.editor.session.setMode("ace/mode/css");
        state.editor.session.setUseSoftTabs(true);
        state.editor.session.setTabSize(2);
        state.editor.session.setUseSoftTabs(true);
      } else if (type === 'javascript') {
        state.editor.session.setMode("ace/mode/javascript");
        state.editor.session.setUseSoftTabs(true);
        state.editor.session.setTabSize(2);
        state.editor.session.setUseSoftTabs(true);
      } else if (type === 'php') {
        state.editor.session.setMode("ace/mode/php");
        state.editor.session.setUseSoftTabs(true);
        state.editor.session.setTabSize(4);
        state.editor.session.setUseSoftTabs(true);
      } else {
        state.editor.session.setMode("ace/mode/text");
        state.editor.session.setUseSoftTabs(true);
        state.editor.session.setTabSize(4);
        state.editor.session.setUseSoftTabs(true);
      }
    }

    return {
      state,
      computedControlWrapperClasses,
      computedMessageWrapperClasses,
      editorStyle
    }
  }
};
export default Ace9Form;