//////////////////////////////////////////////////////////////////////////
// DN42 Realtime GRC
//////////////////////////////////////////////////////////////////////////

const ExplorerURL='https://explorer.burble.com/#'

//////////////////////////////////////////////////////////////////////////
// smaller display components

// display an ASN
Vue.component('reg-asn', {
    template: '#reg-asn',
    props: [ 'asn' ],
    data() {
        return { }
    },
    computed: {
        normal: function() {
            if (this.asn.startsWith("AS")) {
                return this.asn;
            } else {
                return "AS" + this.asn;
            }
        },
        url: function() {
            return ExplorerURL + "/aut-num/" + this.normal;
        }
    }
})

// display a path of ASNs
Vue.component('reg-path', {
    template: '#reg-path',
    props: [ 'path' ],
    data() {
        return { }
    },
    computed: {
        list: function() {
            return this.path.split(" ");
        }
    }
})

// display a inet{6,}num
Vue.component('reg-prefix', {
    template: '#reg-prefix',
    props: [ 'prefix' ],
    data() {
        return { }
    },
    computed: {
        isIPv6: function() {
            return this.prefix.includes(":")
        },
        forced: function() { return this.prefix },
        url: function() {
            var prefix = this.prefix.replace("/", "_")
            if (this.isIPv6) {
                return ExplorerURL + "/inet6num/" + prefix;
            }
            else {
                return ExplorerURL + "/inetnum/" + prefix;
            }
        }
    }
})

// display mntner(s)
Vue.component('reg-mnts', {
    template: '#reg-mnts',
    props: [ 'mnts' ],
    data() {
        return { }
    }
})

// display mntner
Vue.component('reg-mnt', {
    template: '#reg-mnt',
    props: [ 'mnt' ],
    data() {
        return { }
    },
    computed: {
        url: function() {
            return ExplorerURL + "/mntner/" + this.mnt
        }
    }
})


// display a set of AS Paths
Vue.component('rt-paths', {
    template: '#rt-paths',
    props: [ 'paths' ],
    data() {
        return { }
    },
    methods: {
        showPaths: function() {
            const e = this.$createElement

            // create a new array of reversed paths
            var paths = [ ]
            this.paths.forEach(path => {
                paths.push(path.split(" ").reverse())
            })
            // and sort for easier comparing
            paths.sort(
                (a,b) => a.join(" ").localeCompare(b.join(" "))
            )
            
            // now build the modal dialog

            // for each path in the list
            var pathList = [ e('p', { }, 'Paths are reverse sorted') ]
            paths.forEach(path => {
                
                // for each ASN in the path
                var asnList = [ ]
                path.forEach(asn => {
                    asnList.push(e('b-link', {
                        class: 'px-1 my-0 py-0',
                        props: {
                            href: ExplorerURL + "/aut-num/" + asn
                        }
                    }, asn))
                })

                pathList.push(e('li', {
                    class: 'my-0 py-0'
                }, asnList))
            })

            var vnode = e('ul', { }, pathList)
            
            this.$bvModal.msgBoxOk([vnode], {
                title: 'AS Paths',
                size: 'xl',
                centered: true
            })
        }
    },
    computed: {
        count: function() {
            return this.paths.length
        }
    }
})

//////////////////////////////////////////////////////////////////////////
// flap list component

Vue.component('app-flaps', {
    template: '#app-flaps-template',
    data() {
        return {
            filter: '',
        }
    },
    computed: {

        total: function() {
            return this.$root.flapsTotal
        },
        
        // converts the map to an array for iterating,
        // applying any filtering that is required
        list: function() {
            
            var list = [ ]
            var flaps = this.$root.flaps
            var total = this.total
            
            Object.keys(flaps).forEach((prefix) => {

                if (this.filter == '' || prefix.includes(this.filter)) {
                    list.push({
                        prefix: prefix,
                        count: flaps[prefix].count,
                        percent: Math.round(flaps[prefix].count*100 / total),
                        paths: flaps[prefix].paths,
                        mntner: flaps[prefix].mntner
                    })
                }
            })
            
            list.sort(
                (a,b) => b.count - a.count
            )

            return list.slice(0, 10)
        }
    },
    mounted() {
        this.$root.$on('flaps-update', data => {
            this.update(data)
        })

    }
})


//////////////////////////////////////////////////////////////////////////
// roa list component

Vue.component('app-roa', {
    template: '#app-roa-template',
    data() {
        return {
            filter4: '',
            filter6: ''
        }
    },
    computed: {
        list4: function() {
            var list = [ ]

            this.$root.roas.forEach((roa) => {
                if (!roa.prefix.includes(':') &&
                    (this.filter4 == '' ||
                     roa.prefix.includes(this.filter4))) {
                    list.push(roa)
                }
            })

            // sort by origin
            list.sort((a,b) => {
                var asna = a.origin.substr(2)
                var asnb = b.origin.substr(2)
                return asna - asnb
            })
            
            return list
        },

        list6: function() {
            var list = [ ]

            this.$root.roas.forEach((roa) => {
                if (roa.prefix.includes(':') &&
                    (this.filter6 == '' ||
                     roa.prefix.includes(this.filter6))) {
                    list.push(roa)
                }
            })

            // sort by origin
            list.sort((a,b) => {
                var asna = a.origin.substr(2)
                var asnb = b.origin.substr(2)
                return asna - asnb
            })
            
            return list
        }        
        

    },
    mounted() {
        this.$root.$on('roa-update', data => {
            this.update(data)
        });
    }
})

//////////////////////////////////////////////////////////////////////////
// timer to update every minute

Vue.component('app-timer', {
    template: '#app-timer',
    data() {
        return {
            seconds: 0,
            timer: 0,
            roaCounter: 0
        }
    },
    methods: {
        trigger: function() {
            if (this.seconds <= 0) {
                this.seconds = 61;

                // refresh flaps data
                axios.get('/api/flaps').then(response => {
                    
                    // build a new map of the prefixes and total updates
                    var flaps = { }
                    var total = 0
                    
                    response.data.list.forEach((update) => {
                        
                        // initialise if no existing entry for this prefix
                        if (!(update.prefix in flaps)) {
                            flaps[update.prefix] = {
                                count: 0,
                                paths: [ ],
                                mntner: this.$root.mntmap[update.prefix] || [ ]
                            }
                        }
                        
                        // canonicalise the ASN path
                        var tmp = update.path.split(" ")
                        var path = tmp.map((asn) => {
                            return "AS" + asn
                        }).join(" ")
                        
                        // finally update the prefix entry
                        flaps[update.prefix].count += update.count
                        flaps[update.prefix].paths.push(path)
                        
                        total += update.count
                    })
                    
                    this.$root.flaps = flaps
                    this.$root.flapsTotal = total
                    
                });

                if (this.roaCounter == 0) {
                    this.roaCounter = 59
                    
                    // refresh roa data
                    axios.get('/api/roa').then(response => {
                        var roas = [ ]
                        response.data.list.forEach((roa) => {
                            var asn = "AS" + roa.origin
                            roas.push({
                                origin: asn,
                                prefix: roa.prefix,
                                mntner: this.$root.mntmap[asn] || [ ]
                            })
                        })
                        this.$root.roas = roas
                    });
                }
                else {
                    this.roaCounter -= 1
                }
                    
            }
            // countdown every second
            this.seconds -= 1;
            this.timer = setTimeout(() => this.trigger(), 1000);
        }
    },
    mounted() {
        this.trigger()
    }
})


//////////////////////////////////////////////////////////////////////////
// main vue application starts here

// initialise the Vue Router
const router = new VueRouter({
    routes: [
        { path: '/',      component: Vue.component('app-flaps')   },        
        { path: '/flaps', component: Vue.component('app-flaps')   },
        { path: '/roa',   component: Vue.component('app-roa')     }
    ]
})

// and the main app instance
const vm = new Vue({
    el: '#grc_realtime',
    data: {
        flaps: { },
        flapsTotal: 0,
        roas: [ ],
        mntmap: { }
    },
    mounted() {
        axios.get('https://explorer.burble.com/api/registry/*inet/*/mnt-by?raw').then(response => {

            // put the response in the mntmap hash
            Object.keys(response.data).forEach(index => {
                var slash = index.indexOf('/')
                var prefix = index.substr(slash + 1)
                var prefix = prefix.replace('_', '/')
                this.mntmap[prefix] = response.data[index]['mnt-by']
            })

            // update the flaps list if required
            Object.keys(this.flaps).forEach(prefix => {
                this.flaps[prefix].mntner = this.mntmap[prefix]
            })

        })

        axios.get('https://explorer.burble.com/api/registry/aut-num/*/mnt-by?raw').then(response => {

            // put the response in the mntmap hash
            Object.keys(response.data).forEach(index => {
                var slash = index.indexOf('/')
                var autnum = index.substr(slash + 1)
                this.mntmap[autnum] = response.data[index]['mnt-by']
            })

            // and roas
            this.roas.forEach(roa => {
                roa.mntner = this.mntmap[roa.origin]
            })
            
        })
    },
    router
})

//////////////////////////////////////////////////////////////////////////
// end of code