document.addEventListener('DOMContentLoaded', function () {
    loading()
    var hold = false,
        external = false,
        timeout = undefined,
        ac = undefined,
        last = undefined
    document.getElementById('instance').addEventListener('keydown', function (event) {
        if (event.key && !event.ctrlKey && !event.altKey && !event.shiftKey) {
            if ((event.key.length === 1 && /[a-z0-9.\-*:]/i.test(event.key)) || (event.key === 'Backspace' && event.target.value !== '')) {
                last = event.target.value
            } else if (event.key === 'Backspace' && event.target.value === '') {
                last = ''
            } else {
                event.preventDefault()
                event.stopPropagation()
            }
        } else {
            event.preventDefault()
            event.stopPropagation()
        }
    })
    document.getElementById('instance').addEventListener('keyup', function (event) {
        if (event.key && !event.ctrlKey && !event.altKey && !event.shiftKey) {
            if ((event.key.length === 1 && /[a-z0-9.\-*:]/i.test(event.key)) || (event.key === 'Backspace' && event.target.value !== '')) {
                keypress(event, event.target.value)
            } else {
                event.preventDefault()
                event.stopPropagation()
            }
        } else {
            event.preventDefault()
            event.stopPropagation()
        }
    })
    var modal = document.getElementById('modal'),
        closemodal = document.getElementById('closemodal'),
        modalcontent = document.querySelector('.modal-content')
    document.getElementById('reverse').addEventListener('click', function (event) {
        var content = document.getElementById('instance').value
        if (content && content.length > 0) {
            loading()
            fetch('/api/block_count/' + content).then(async function (result) {
                var res = await result.json()
                if (res && res.block_count >= 0) {
                    document.getElementById('blockcount').innerText = res.block_count
                    document.getElementById('blockinstance').innerText = 'ing ' + content
                    document.getElementById('blocktook').innerText = res.took
                    var list = document.getElementById('blocklist'),
                        download = document.getElementById('download')
                    download.removeAttribute('href')
                    download.removeAttribute('download')
                    download.style.display = 'none'
                    while (list.hasChildNodes()) {
                        list.removeChild(list.firstChild)
                    }
                    res.instances.map(function (instance, index) {
                        var li = document.createElement('li'),
                            text = document.createTextNode((index + 1) + '. '),
                            link = '<a href="/' + (new URLSearchParams(window.location.search).has('matrix') ? '?matrix' : '') + '#' + instance.instance + '" onclick="window.location.href=this.href; window.location.reload(false);">' + instance.instance + '</a>',
                            text2 = document.createTextNode(instance.comment ? ' - ' + instance.comment : '')
                        li.appendChild(text)
                        li.insertAdjacentHTML('beforeend', link)
                        li.appendChild(text2)
                        blocklist.appendChild(li)
                    })
                    listinstance(content, new AbortController())
                    modalcontent.style.animationName = 'animatetop'
                    modal.style.display = 'block'
                    var locationsearch = !new URLSearchParams(window.location.search).has('reverse') ? window.location.search ? window.location.search + '&reverse' : '?reverse' : window.location.search
                    history.pushState({}, null, '/' + locationsearch + '#' + content)
                    if (new URLSearchParams(window.location.search).has('matrix')) {
                        var walker = document.createTreeWalker(list, NodeFilter.SHOW_TEXT)
                        while (walker.nextNode()) {
                            if (walker.currentNode.textContent.length > 1) {
                                new Messenger(walker.currentNode)
                            }
                        }
                    }
                    document.getElementById('loader-content').style.display = 'none'
                }
            })
        }
    })
    document.body.addEventListener('click', function (event) {
        if (event.target == modal) {
            modalcontent.style.animationName = 'animatebottom'
        }
    })
    closemodal.addEventListener('click', function (event) {
        modalcontent.style.animationName = 'animatebottom'
    })
    modalcontent.addEventListener('animationend', function (event) {
        if (event.animationName === 'animatebottom') {
            modal.style.display = 'none'
        }
    })
    document.getElementById('title').addEventListener('click', function (event) {
        document.getElementById('instance').value = ''
        if (new URLSearchParams(window.location.search).has('matrix')) {
            window.location.href = '/?matrix'
        } else {
            window.location.href = '/'
        }
        event.preventDefault()
        event.stopPropagation()
    })
    document.getElementById('capture').addEventListener('click', function (event) {
        html2canvas(document.querySelector('.modal-body')).then(function (canvas) {
            var a = document.createElement('a')
            a.download = 'fediblock-' + Date.now() + '.png'
            a.href = canvas.toDataURL({ type: 'image/png' })
            a.type = 'image/png'
            a.target = '_blank'
            a.dispatchEvent(new MouseEvent('click'))
        })
    })
    function keypress(event, content) {
        loading()
        if (timeout) {
            clearTimeout(timeout)
        }
        if (ac && ac.signal) {
            ac.abort()
        }
        ac = new AbortController()
        if (content.length === 0) {
            hold = true
            ranking()
        } else if (content.length > 0 && !hold) {
            hold = true
            listinstance(content, ac)
        } else if (content.length > 0 && hold) {
            timeout = setTimeout(function () {
                listinstance(content, ac)
            }, 300)
        }
    }
    function listinstance(content, ac) {
        loading()
        var list = document.getElementById('instancelist')
        fetch('/api/list/' + content, { signal: ac.signal }).then(async function (result) {
            var res = await result.json()
            if (res && Array.isArray(res.instances) && Array.isArray(res.suggests)) {
                while (list.hasChildNodes()) {
                    list.removeChild(list.firstChild)
                }
                res.instances.map(function (r) {
                    var li = document.createElement('li')
                    li.innerHTML = r.domain + (r.blocks ? ' - ' + r.blocks + ' blocks' : '')
                        + (r.nodeinfo ? ' <a href="/api/detail_nodeinfo/' + r.domain + '" title="Nodeinfo for ' + r.domain + '" target="_blank">&#9432;</a>' : '')
                        + (r.api.title ? '<br /> <br />' + r.api.title + ' - ' + r.api.uri + '<br />'
                            + (r.last ? 'Last update: ' + (new Date(r.last)).toLocaleString() + '<br />' : '')
                            + (r.api.email ? 'Email: ' + r.api.email + '<br />' : '')
                            + 'Registration: ' + (r.api.registrations ? 'open' : 'closed') + ' - Version: ' + r.api.version + '<br />'
                            + (r.api.stats ? 'Users: ' + r.api.stats.user_count + ' - Statuses: ' + r.api.stats.status_count + ' - Domains: ' + r.api.stats.domain_count + '<br />' : '')
                            + (r.api.description ? 'Description: ' + r.api.description + '<br />' : '')
                            + (r.api.thumbnail ? '<img domain="' + r.domain + '" loading="lazy" src="' + r.api.thumbnail + '" /><br />' : '') : '')
                    li.setAttribute('data-domain', r.domain)
                    li.addEventListener('click', function (event) {
                        if (event.target.matches('a')) {
                            return true
                        }
                        loading()
                        var blocklist = document.getElementById('blocklist'),
                            download = document.getElementById('download'),
                            domain = event.target.getAttribute('data-domain')
                        while (blocklist.hasChildNodes()) {
                            blocklist.removeChild(blocklist.firstChild)
                        }
                        fetch('/api/detail/' + domain).then(async function (result) {
                            var res = await result.json()
                            if (res.blocks && Array.isArray(res.blocks) && res.blocks.length > 0) {
                                var csv = '#domain,#severity,#reject_media,#reject_reports,#public_comment,#obfuscate\n'
                                res.blocks.map(function (r, i) {
                                    var liblock = document.createElement('li'),
                                        text = document.createTextNode((i + 1) + '. '),
                                        link = '<a href="/' + (new URLSearchParams(window.location.search).has('matrix') ? '?matrix' : '') + '#' + r.domain + '" onclick="window.location.href=this.href; window.location.reload(false);">' + r.domain + '</a>',
                                        textSeverity = document.createTextNode(r.severity ? ' - ' + r.severity : ''),
                                        textComment = document.createTextNode(r.comment ? ' - ' + r.comment : '')
                                    liblock.appendChild(text)
                                    liblock.insertAdjacentHTML('beforeend', link)
                                    liblock.appendChild(textSeverity)
                                    liblock.appendChild(textComment)
                                    blocklist.appendChild(liblock)
                                    csv += !r.domain.match(/\*/) ? r.domain + ',' + (r.severity ? r.severity : '') + ',False,False,' + (r.comment ? '"' + r.comment + '"' : '') + ',False\n' : ''
                                })
                                modalcontent.style.animationName = 'animatetop'
                                modal.style.display = 'block'
                                document.getElementById('blockcount').innerText = res.blocks.length
                                document.getElementById('blockinstance').innerHTML = 'ed by ' + (res.api ? '<a href="/api/detail_api/' + res.instance + '" title="API info for ' + res.instance + '" target="_blank">'
                                    + res.instance + '</a>' : res.instance) + (res.nodeinfo ? '&nbsp;<a href="/api/detail_nodeinfo/' + res.instance + '" title="Nodeinfo for ' + res.instance + '" target="_blank">&#9432;</a>' : '')
                                    + '<br/>Last update: ' + (new Date(res.last)).toLocaleString()
                                document.getElementById('blocktook').innerText = res.took
                                if (csv.split('\n').length > 2) {
                                    download.href = window.URL.createObjectURL(new Blob([csv], { type: 'text/csv' }))
                                    download.download = 'fediblock-' + res.instance + '.csv'
                                    download.style.display = 'inherit'
                                } else {
                                    download.removeAttribute('href')
                                    download.removeAttribute('download')
                                    download.style.display = 'none'
                                }
                                if (new URLSearchParams(window.location.search).has('matrix')) {
                                    var walker = document.createTreeWalker(blocklist, NodeFilter.SHOW_TEXT)
                                    while (walker.nextNode()) {
                                        if (walker.currentNode.textContent.length > 1) {
                                            new Messenger(walker.currentNode)
                                        }
                                    }
                                }
                            } else {
                                var a = document.createElement('a')
                                a.href = '/api/detail_api/' + domain
                                a.title = 'API info for ' + domain
                                a.target = '_blank'
                                a.dispatchEvent(new MouseEvent('click'))
                            }
                            document.getElementById('loader-content').style.display = 'none'
                        })
                        window.location.hash = domain
                        document.getElementById('loader-content').style.display = 'none'
                    })
                    list.appendChild(li)
                })
                var placeholder = document.getElementById('placeholder')
                if (res.suggests.length > 0) {
                    placeholder.innerHTML = res.suggests.map(function (instance) {
                        return '<a href="/' + (new URLSearchParams(window.location.search).has('matrix') ? '?matrix' : '') + '#' + instance + '" onclick="suggest(this.innerText);">' + instance + '</a>'
                    }).join(', ')
                } else {
                    placeholder.innerText = ''
                }
                if (external) {
                    document.getElementById('instancelist').childNodes.forEach(function (node) {
                        if (node.textContent.split(' ')[0].trim() === content) {
                            node.dispatchEvent(new MouseEvent('click'))
                        }
                    })
                    external = false
                }
                if (new URLSearchParams(window.location.search).has('matrix')) {
                    var walker = document.createTreeWalker(list, NodeFilter.SHOW_TEXT)
                    while (walker.nextNode()) {
                        if (walker.currentNode.textContent.length > 1) {
                            new Messenger(walker.currentNode)
                        }
                    }
                }
            }
            document.getElementById('loader-content').style.display = 'none'
            hold = false
        }).catch(function (err) {
            // console.error(err)
            document.getElementById('loader-content').style.display = 'none'
            hold = false
        })
    }
    function ranking() {
        loading()
        var list = document.getElementById('instancelist'),
            placeholder = document.getElementById('placeholder')
        fetch('/api/ranking').then(async function (result) {
            var res = await result.json()
            if (Array.isArray(res) && res.length > 0) {
                while (list.hasChildNodes()) {
                    list.removeChild(list.firstChild)
                }
                var li = document.createElement('li'),
                    strong = document.createElement('strong'),
                    text = document.createTextNode('Top 100')
                strong.appendChild(text)
                li.appendChild(strong)
                list.appendChild(li)
                res.map(function (r, i) {
                    var li = document.createElement('li'),
                        text = document.createTextNode(`${i + 1} - ${r.domain} - ${r.count} blocks`)
                    li.addEventListener('click', function (event) {
                        var instance = document.getElementById('instance'),
                            text = event.target.innerText.split(' - ')[1].trim()
                        instance.value = text
                        document.getElementById('reverse').click()
                    })
                    li.appendChild(text)
                    list.appendChild(li)
                })
            }
            if (new URLSearchParams(window.location.search).has('matrix')) {
                var walker = document.createTreeWalker(list, NodeFilter.SHOW_TEXT)
                while (walker.nextNode()) {
                    if (walker.currentNode.textContent.length > 1) {
                        new Messenger(walker.currentNode)
                    }
                }
            }
            placeholder.innerText = ''
            hold = false
            document.getElementById('loader-content').style.display = 'none'
        }).catch(function (err) {
            console.error(err)
            hold = false
            document.getElementById('loader-content').style.display = 'none'
        })
    }
    function suggest(urlitem) {
        var instance = document.getElementById('instance')
        window.location.hash = urlitem
        instance.value = urlitem
        listinstance(urlitem, new AbortController())
    }
    function loading() {
        var loader = document.getElementById('load'),
            loaders = ['loader-pong', 'loader-pacman', 'loader-abyss', 'loader-jump', 'loader-loading', 'loader-avenger', 'loader-mario']
        if (loader.classList.value) {
            loader.classList.remove(loader.classList.value)
        }
        loader.classList.add(loaders[Math.floor(Math.random() * loaders.length)])
        document.getElementById('loader-content').style.display = 'initial'
    }
    window.suggest = suggest
    fetch('/api/count').then(async function (result) {
        var res = await result.json()
        if (res && res.count) {
            fetch('/api/stats').then(async function (statsresult) {
                var statsres = await statsresult.json()
                if (statsres) {
                    document.getElementById('count').innerHTML = res.count + '<div id="tooltip">' +
                        '<u><strong><center>STATS</center></strong></u>' +
                        '<ul><li>Statuses AVG: ' + Math.round(statsres.status_avg) + '</li>' +
                        '<li>Statuses MAX: ' + statsres.status_max + '</li>' +
                        '<li>Domain AVG: ' + Math.round(statsres.domain_avg) + '</li>' +
                        '<li>Domain MAX: ' + statsres.domain_max + '</li>' +
                        '<li>Users AVG: ' + Math.round(statsres.user_avg) + '</li>' +
                        '<li>Users MAX: ' + statsres.user_max + '</li>' +
                        '<li>Stats Instances: ' + statsres.stats_filtered + '</li>' +
                        '<li>Total Instances: ' + statsres.instance_count + '</li>' +
                        '<li>Users by Instance: ' + (Math.round(statsres.user_avg) / statsres.instance_count).toFixed(2) + '</li>' +
                        '<li>Statuses by Domain: ' + (Math.round(statsres.status_avg) / Math.round(statsres.domain_avg)).toFixed(2) + '</li>' +
                        '<li>Statuses by User: ' + (Math.round(statsres.status_avg) / Math.round(statsres.user_avg)).toFixed(2) + '</li>' +
                        '</ul></div>'
                } else {
                    document.getElementById('count').innerText = res.count
                }
            })
            fetch('/api/outbox').then(async function (result) {
                var res = await result.json()
                if (res && res.length > 0) {
                    var bounce = document.getElementById('bounce'),
                        host = new URL(window.location.href).host
                    reg = '(<\/?p>|(https?:\/\/)?' + host + ')'
                    bounce.innerHTML = res.map(function (p) { return `${p.content.replace(new RegExp(reg, 'igm'), '')} ${dayjs().to(p.published)}` }).join(' | ')
                }
            })
            fetch('/api/served').then(async function (result) {
                var res = await result.json()
                if (res.served) {
                    var served = document.getElementById('served')
                    served.innerText = res.served
                }
                if (res.lastscan) {
                    var lastscan = document.getElementById('lastscan')
                    lastscan.innerText = res.lastscan
                }
                if (res.server) {
                    var server = document.getElementById('server')
                    server.innerHTML = '<a href="/' + (new URLSearchParams(window.location.search).has('matrix') ? '?matrix' : '') + '#' + res.server + '" onclick="window.location.href=this.href; window.location.reload(false);">' + res.server + '</a>'
                }
                if (res.instances) {
                    var instances = document.getElementById('instances')
                    instances.innerText = res.instances
                }
                if (res.peers) {
                    var peers = document.getElementById('peers')
                    peers.innerText = res.peers
                }
                if (res.created) {
                    var created = document.getElementById('created')
                    created.innerText = res.created
                }
                if (res.updated) {
                    var updated = document.getElementById('updated')
                    updated.innerText = res.updated
                }
            })
        }
    })
    if (window.location.hash && window.location.hash !== null && window.location.hash !== '#') {
        var instance = document.getElementById('instance'),
            urlitem = window.location.hash.substring(1)
        instance.value = urlitem
        if (new URLSearchParams(window.location.search).has('reverse')) {
            document.getElementById('reverse').click()
        } else {
            external = true
            listinstance(urlitem, new AbortController())
        }
    } else {
        ranking()
        document.getElementById('instance').focus()
    }
    var source = new window.EventSource('/api/scan'),
        scan = document.getElementById('scan')
    source.onmessage = function (event) {
        if (event.data) {
            if (event.data.length > 0) {
                scan.innerText = 'Async Scanning' + event.data
            } else {
                scan.innerText = 'Async Scanning...'
            }
        }
    }
    source.onerror = function (error) {
        console.error(error)
    }
    if (new URLSearchParams(window.location.search).has('matrix')) {
        var walker = document.createTreeWalker(document, NodeFilter.SHOW_TEXT)
        while (walker.nextNode()) {
            if (walker.currentNode.textContent.length > 1) {
                new Messenger(walker.currentNode)
            }
        }
        var matrix = document.getElementById('matrix')
        matrix.href = '/'
        matrix.innerText = 'on'
    } else {
        var matrix = document.getElementById('matrix')
        matrix.href = '/?matrix'
        matrix.innerText = 'off'
    }
})