Tue Oct 30 2018
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<template>
    <main>
        <Tabs />
        
        <div class="contents"  :class="{'overflow-hidden' : $store.state.mode == 'edit'}">
          <ul class="lines">
            <li v-for='i in $store.getters.lineNumbers' :key=i>{{i}}</li>
          </ul>
          
          <div class="modes">
            
          
            <pre id="paste"             
            v-highlightjs="$store.getters.viewContent"
              v-if='$store.state.mode == "view"'><code>{{ $store.getters.viewContent }}</code></pre>

            <div class="actions">
              <a href="" 
                class="reply"
                title="ctrl + r"
                @click.prevent='changeMode("edit")'
                v-if="$store.state.mode == 'view'"
                >reply</a>
            </div>

            <!-- simply for Lighthouse scrore =D -->
            <label for="textarea">insert code</label>

            <textarea
              id="textarea"
              v-if='$store.state.mode == "edit"'
              placeholder="paste code. ctrl + s to save"
              @keydown="onKeyDown"
              @input='onInput'
              autofocus
              spellcheck="false"
              :value="$store.getters.viewContent">
              </textarea> 
              
          </div>
        </div>      
    </main>
</template>

<script>
import axios from 'axios'

import VueHighlightJS from 'vue-highlightjs'
import Tabs from '~/components/Tabs.vue'

export default {
  components: {
    Tabs,
  },
  

    methods: {

      /**
       * Changes between 'edit' and 'view' mode.
       * We take the chance to hide/show some nav links
       * based on the mode.
       */
      changeMode (mode)
      {
        this.$store.commit('SET_MODE', mode)
        /*
        if (mode == 'edit')
        {
          this.$store.commit('toggleLink', {key: 'save', value: false})
        }
        else if (mode == 'view')
        {
          this.$store.commit('toggleLink', {key: 'save', value: true})
          this.$store.commit('toggleLink', {key: 'raw', value: false})
        }
        */
      },


      /**
       * Detects keys down, so we can save
       * if user presses ctrl + s
       */
      onKeyDown (e)
      {
        if (e.ctrlKey  &&  e.code === "KeyS")
        {          
          // Stop browser's "save" dialog
          e.preventDefault()
          this.save()
        }      
      },


      /**
       * When textarea input is changed.
       * We also detect keystrokes for saving (ctrl+s)
       */
      onInput (e)
      {               
        let commit = this.$store.commit
        let value = e.target.value        
        if (!this.$store.state.entries.length)
        {          
          commit('ADD_ENTRY', { title: 'untitled', content: value })
        }
        else
        {
          commit('SET_ENTRY_CONTENT', {index:this.$store.state.activeEntry, value})
        }
        if (!value && this.$store.state.entries.length == 1)
        {
          commit('CLEAR_ENTRIES')
        }
        let scrollHeight = document.querySelector('body').scrollHeight
        let scrollHeightText = document.querySelector('textarea').scrollHeight
        let offsetHeight = document.querySelector('body').offsetHeight
        console.log(`sh: ${scrollHeight}   oh: ${offsetHeight}   sht: ${scrollHeightText}`)
        if (scrollHeight >  offsetHeight)
        {
            document.querySelector('textarea').style.height = `${scrollHeightText}px`
            //document.querySelector('.modes').style.height = `${contentHeight}px`
        }
          console.log(scrollHeight)

        //commit('SET_CONTENT', value)
      },


      /**
       * Sends the entries to the server for storing
       */
      async save ()
      { 
        if (!this.$store.state.entries.length)
        {
          return
        }

        // Remove entries where content is blank
        let entries = this.$store.state.entries
        let paste = entries.filter(entry => !!entry.content.trim())
                
        this.$store.commit('SET_MODE', 'view');     

        let data = {
          paste,
          privacy: this.$store.state.privacy
        }
        
        let req = await axios.post('https://us-central1-tabbit-1313.cloudfunctions.net/save',  data)
                
        if (req.data.result)
        {          
          this.$router.push(req.data.id)
        }
        else
        {
          this.$store.commit('SET_MODE', 'edit');     
        }
      }    

    },


   
}
// contents: black, models: green, textarea red
</script>


<style lang="stylus">
  @require '~assets/variables'
  
  // When we hit 'reply' and mode changes from view to edit,
  // a scrollbar appears and we get the body's scrollbar and 
  // .content's. This prevents double scrollbars
  label
    display block
    height 0
    overflow hidden
    
  .overflow-hidden
    //overflow hidden
    background inherit

  main
    flex-direction column
    flex-grow 1
    height 100%
    

  .contents
    height 100%
    padding-top 3em
    box-sizing border-box
    display flex
    border 1px solid red
  ul.lines   
    height 100%
    font-size 13px
    width 30px
    font-family monospace
    margin 0
    padding 0
    border 1px solid black
    li
      margin 0
      padding 0
      line-height 20px
      color #777
  .modes    
    width 100%
    height 100%  
  
  pre
  textarea
    line-height 20px
    font-family monospace
    box-sizing border-box
    font-size 95%
    padding 0
    
  textarea
    outline none
    white-space no-wrap
    border 0
    color #555
    display flex
    width 100%
    height 100%
    background transparent
    padding 0!important
    border 1px solid blue
    overflow hidden

  pre
    height auto
    margin 0
    
  .actions
    position fixed
    bottom 10px    
    width 100%
    right 10px
    text-align right
    a
      display inline-block
      background alpha(black, 10%)
      width 50px
      height 50px
      border-radius 100px
      font-size 80%
      text-decoration none
      text-align center
      line-height 50px
      color $blue
      margin-left 10px
  
  code
    background transparent!important
    
  ::-webkit-input-placeholder
    text-align center
    padding-top 2.4em
    font-family quicksand
    color rgba(0, 0, 0, 0.1)
    font normal 700 4em quicksand
  
</style>