/*
    Onionr - P2P Anonymous Storage Network

    This file handles the mail interface

    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
    the Free Software Foundation, either version 3 of the License, or
    (at your option) any later version.

    This program is distributed in the hope that it will be useful,
    but WITHOUT ANY WARRANTY; without even the implied warranty of
    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
    GNU General Public License for more details.

    You should have received a copy of the GNU General Public License
    along with this program.  If not, see <https://www.gnu.org/licenses/>.
*/

pms = ''
sentbox = ''
threadPart = document.getElementById('threads')
threadPlaceholder = document.getElementById('threadPlaceholder')
tabBtns = document.getElementById('tabBtns')
threadContent = {}
myPub = httpGet('/getActivePubkey')

function openThread(bHash, sender, date, sigBool){
    var messageDisplay = document.getElementById('threadDisplay')
    var blockContent = httpGet('/getblockbody/' + bHash)
    document.getElementById('fromUser').value = sender
    messageDisplay.innerText = blockContent
    var sigEl = document.getElementById('sigValid')
    var sigMsg = 'signature'

    if (sigBool){
        sigMsg = 'Good ' + sigMsg
        sigEl.classList.remove('danger')
    }
    else{
        sigMsg = 'Bad/no ' + sigMsg + ' (message could be fake)'
        sigEl.classList.add('danger')
    }
    sigEl.innerText = sigMsg
    overlay('messageDisplay')
}

function setActiveTab(tabName){
    threadPart.innerHTML = ""
    switch(tabName){
        case 'inbox':
            getInbox()
            break
        case 'sentbox':
            getSentbox()
            break
        case 'drafts':
            console.log(tabName)
            break
        case 'send message':
            console.log(tabName)
            break
    }
}

function loadInboxEntrys(bHash){
    fetch('/getblockheader/' + bHash, {
        headers: {
          "token": webpass
        }})
    .then((resp) => resp.json()) // Transform the data into json
    .then(function(resp) {
        console.log(resp)
        var entry = document.createElement('div')
        var bHashDisplay = document.createElement('span')
        var senderInput = document.createElement('input')
        var subjectLine = document.createElement('span')
        var dateStr = document.createElement('span')
        var validSig = document.createElement('span')
        var humanDate = new Date(0)
        var metadata = resp['metadata']
        humanDate.setUTCSeconds(resp['meta']['time'])
        senderInput.value = httpGet('/getHumanReadable/' + resp['meta']['signer'])
        if (resp['meta']['validSig']){
            validSig.innerText = 'Signature Validity: Good'
        }
        else{
            validSig.innerText = 'Signature Validity: Bad'
            validSig.style.color = 'red';
        }
        if (senderInput.value == ''){
            senderInput.value = 'Anonymous'
        }
        bHashDisplay.innerText = bHash.substring(0, 10)
        entry.setAttribute('hash', bHash);
        senderInput.readOnly = true
        dateStr.innerText = humanDate.toString()
        if (metadata['subject'] === undefined || metadata['subject'] === null) {
            subjectLine.innerText = '()'
        }
        else{
            subjectLine.innerText = '(' + metadata['subject'] + ')'
        }
        //entry.innerHTML = 'sender ' + resp['meta']['signer'] + ' - ' + resp['meta']['time'] 
        threadPart.appendChild(entry)
        entry.appendChild(bHashDisplay)
        entry.appendChild(senderInput)
        entry.appendChild(validSig)
        entry.appendChild(subjectLine)
        entry.appendChild(dateStr)
        entry.classList.add('threadEntry')

        entry.onclick = function(){
            openThread(entry.getAttribute('hash'), senderInput.value, dateStr.innerText, resp['meta']['validSig'])
        }
        
      }.bind(bHash))
}

function getInbox(){
    var showed = false
    var requested = ''
    for(var i = 0; i < pms.length; i++) {
        if (pms[i].trim().length == 0){
            continue
        }
        else{
            threadPlaceholder.style.display = 'none'
            showed = true
        }
        loadInboxEntrys(pms[i])
    }
    if (! showed){
        threadPlaceholder.style.display = 'block'
    }
}

function getSentbox(){
    fetch('/apipoints/mail/sentbox', {
        headers: {
          "token": webpass
        }})
    .then((resp) => resp.text()) // Transform the data into json
    .then(function(data) {
        sentbox = data
      })
}

fetch('/getblocksbytype/pm', {
    headers: {
      "token": webpass
    }})
.then((resp) => resp.text()) // Transform the data into json
.then(function(data) {
    pms = data.split(',')
    setActiveTab('inbox')
  })

tabBtns.onclick = function(event){
    var children = tabBtns.children
    for (var i = 0; i < children.length; i++) {
        var btn = children[i]
        btn.classList.remove('activeTab')
    }
    event.target.classList.add('activeTab')
    setActiveTab(event.target.innerText.toLowerCase())
}

var idStrings = document.getElementsByClassName('myPub')
var myHumanReadable = httpGet('/getHumanReadable/' + myPub)
for (var i = 0; i < idStrings.length; i++){
    if (idStrings[i].tagName.toLowerCase() == 'input'){
        idStrings[i].value = myHumanReadable
    }
    else{
        idStrings[i].innerText = myHumanReadable
    }
}

for (var i = 0; i < document.getElementsByClassName('refresh').length; i++){
    document.getElementsByClassName('refresh')[i].style.float = 'right'
}

for (var i = 0; i < document.getElementsByClassName('closeOverlay').length; i++){
    document.getElementsByClassName('closeOverlay')[i].onclick = function(e){
        document.getElementById(e.target.getAttribute('overlay')).style.visibility = 'hidden'
    }
}