const { createApp } = Vue;

const api = axios.create({ baseURL: '/api' });

const chartColors = [
  '#38bdf8','#22d3ee','#818cf8','#c084fc','#f472b6','#fb7185','#34d399','#a3e635','#fbbf24','#f87171'
];

function destroyChart(chart) { if(chart) { chart.destroy(); } }

function makeBarConfig(label, labels, data) {
  return {
    type: 'bar',
    data: {
      labels,
      datasets: [{
        label,
        data,
        backgroundColor: chartColors,
        borderRadius: 4,
      }]
    },
    options: {
      responsive: true,
      maintainAspectRatio: false,
      plugins: { legend: { display: false } },
      scales: {
        y: { beginAtZero: true, grid: { color: '#27303f' }, ticks: { color: '#94a3b8' } },
        x: { grid: { display: false }, ticks: { color: '#94a3b8' } }
      }
    }
  };
}

function makeLineConfig(labels, data) {
  return {
    type: 'line',
    data: {
      labels,
      datasets: [{
        label: 'Events',
        data,
        borderColor: '#38bdf8',
        backgroundColor: 'rgba(56,189,248,0.15)',
        fill: true,
        tension: 0.3,
        pointRadius: 3,
      }]
    },
    options: {
      responsive: true,
      maintainAspectRatio: false,
      plugins: { legend: { display: false } },
      scales: {
        y: { beginAtZero: true, grid: { color: '#27303f' }, ticks: { color: '#94a3b8' } },
        x: { grid: { color: '#27303f' }, ticks: { color: '#94a3b8' } }
      }
    }
  };
}

createApp({
  data() {
    return {
      selectedFile: null,
      uploading: false,
      uploadMsg: '',
      uploadOk: false,
      stats: {
        overview: { total_entries: 0, firewall_entries: 0, proxy_entries: 0 },
        top_sources: [],
        top_destinations: [],
        top_ports: [],
        top_urls: [],
        actions: [],
        timeline: [],
        unique_counts: { unique_sources: 0, unique_destinations: 0 }
      },
      analyzeType: 'all',
      analyzeLimit: 100,
      analyzing: false,
      analysisResult: '',
      charts: {}
    };
  },
  mounted() {
    this.fetchStats();
    setInterval(() => this.fetchStats(), 15000);
  },
  methods: {
    handleFile(e) {
      this.selectedFile = e.target.files[0];
    },
    async uploadFile() {
      if (!this.selectedFile) return;
      this.uploading = true;
      this.uploadMsg = '';
      const form = new FormData();
      form.append('file', this.selectedFile);
      try {
        const res = await api.post('/upload', form, { headers: { 'Content-Type': 'multipart/form-data' } });
        this.uploadOk = true;
        this.uploadMsg = res.data.message;
        this.selectedFile = null;
        this.$el.querySelector('input[type=file]').value = '';
        this.fetchStats();
      } catch (e) {
        this.uploadOk = false;
        this.uploadMsg = e.response?.data?.detail || 'Upload fehlgeschlagen.';
      } finally {
        this.uploading = false;
      }
    },
    async fetchStats() {
      try {
        const res = await api.get('/stats', { params: { limit: 20 } });
        this.stats = res.data;
        this.$nextTick(() => this.renderCharts());
      } catch (e) {
        console.error('Stats fetch error', e);
      }
    },
    renderCharts() {
      const s = this.stats;

      destroyChart(this.charts.sources);
      if (s.top_sources.length) {
        const cfg = makeBarConfig('Hits', s.top_sources.map(x=>x.source_ip||'N/A'), s.top_sources.map(x=>x.count));
        this.charts.sources = new Chart(document.getElementById('chartSources'), cfg);
      }

      destroyChart(this.charts.dests);
      if (s.top_destinations.length) {
        const cfg = makeBarConfig('Hits', s.top_destinations.map(x=>x.destination_ip||'N/A'), s.top_destinations.map(x=>x.count));
        this.charts.dests = new Chart(document.getElementById('chartDestinations'), cfg);
      }

      destroyChart(this.charts.ports);
      if (s.top_ports.length) {
        const cfg = makeBarConfig('Hits', s.top_ports.map(x=>x.destination_port||'N/A'), s.top_ports.map(x=>x.count));
        this.charts.ports = new Chart(document.getElementById('chartPorts'), cfg);
      }

      destroyChart(this.charts.timeline);
      if (s.timeline.length) {
        const cfg = makeLineConfig(s.timeline.map(x=>x.time_bucket), s.timeline.map(x=>x.count));
        this.charts.timeline = new Chart(document.getElementById('chartTimeline'), cfg);
      }
    },
    async runAnalysis() {
      this.analyzing = true;
      this.analysisResult = '';
      try {
        const res = await api.post('/analyze', null, {
          params: { log_type: this.analyzeType, limit: this.analyzeLimit }
        });
        this.analysisResult = res.data.analysis;
      } catch (e) {
        this.analysisResult = e.response?.data?.detail || 'Analyse fehlgeschlagen.';
      } finally {
        this.analyzing = false;
      }
    }
  }
}).mount('#app');