document.addEventListener('DOMContentLoaded', () => {
    window.App = { reportCode: null, fightId: null, fightStart: 0, fightEnd: 0, phases: [], fights: [] };

    const form              = document.getElementById('report-form');
    const output            = document.getElementById('output');
    const outputCard        = document.getElementById('output-card');
    const initialHint       = document.getElementById('initial-hint');
    const fightSelectCard   = document.getElementById('fight-select-card');
    const fightSelect       = document.getElementById('fight-select');
    const explorerCard      = document.getElementById('event-explorer-card');
    const exLoadBtn         = document.getElementById('ex-load-btn');
    const exAbilitySelect   = document.getElementById('ex-ability');
    const exPlayerSelect    = document.getElementById('ex-player-name');

    let allFights = [];

    const codeInput = form.elements['report_code'];
    codeInput.addEventListener('input', () => {
        const match = codeInput.value.match(/fflogs\.com\/reports\/([A-Za-z0-9]+)/);
        if (match) codeInput.value = match[1];
    });

    function formatDuration(ms) {
        const min = Math.floor(ms / 60000);
        const sec = String(Math.floor((ms % 60000) / 1000)).padStart(2, '0');
        return `${min}:${sec}`;
    }

    function formatBossHp(fight) {
        if (fight.kill) return 'Kill';
        const pct = fight.fightPercentage;
        if (pct == null) return '?';
        return pct.toFixed(2) + '%';
    }

    function displayFight(fight) {
        output.textContent       = JSON.stringify(fight, null, 2);
        outputCard.style.display = 'block';
    }

    fightSelect.addEventListener('change', () => {
        if (!fightSelect.value) return;
        const id    = parseInt(fightSelect.value, 10);
        const fight = allFights.find(f => f.id === id);
        if (!fight) return;

        window.App.fightId    = id;
        window.App.fightStart = fight.startTime;
        window.App.fightEnd   = fight.endTime;
        window.App.phases     = buildPhases(fight);

        displayFight(fight);
        explorerCard.style.display = 'block';
        window.analysisTab?.onFightSelected?.();
        loadAbilities(id, fight.startTime, fight.endTime);
    });

    function buildPhases(fight) {
        const transitions = fight.phaseTransitions ?? [];
        if (transitions.length === 0) return [];
        const phases = transitions.map((t, i) => ({
            id:        t.id,
            name:      `Phase ${t.id}`,
            startTime: t.startTime,
            endTime:   transitions[i + 1]?.startTime ?? fight.endTime,
        }));
        return [{ id: 0, name: 'Ganzer Fight', startTime: fight.startTime, endTime: fight.endTime }, ...phases];
    }

    async function loadAbilities(fightId, startTime, endTime) {
        exAbilitySelect.innerHTML = '<option value="">Lädt…</option>';
        try {
            const res  = await fetch('api/abilities.php', {
                method:  'POST',
                headers: { 'Content-Type': 'application/x-www-form-urlencoded' },
                body:    new URLSearchParams({
                    report_code: window.App.reportCode,
                    fight_id:    fightId,
                    start_time:  startTime,
                    end_time:    endTime,
                }),
            });
            const json = await res.json();

            exAbilitySelect.innerHTML = '<option value="">Alle</option>';
            (json.abilities ?? []).forEach(ab => {
                const opt       = document.createElement('option');
                opt.value       = ab.id;
                opt.textContent = ab.name;
                exAbilitySelect.appendChild(opt);
            });

            exPlayerSelect.innerHTML = '<option value="">Alle</option>';
            (json.players ?? []).forEach(p => {
                const opt       = document.createElement('option');
                opt.value       = p.name;
                opt.textContent = p.name;
                exPlayerSelect.appendChild(opt);
            });
        } catch {
            exAbilitySelect.innerHTML = '<option value="">Fehler beim Laden</option>';
        }
    }

    exLoadBtn.addEventListener('click', async () => {
        if (!window.App.fightId) return;

        output.textContent       = '// loading events...';
        outputCard.style.display = 'block';

        const params = {
            report_code:   window.App.reportCode,
            fight_id:      window.App.fightId,
            start_time:    window.App.fightStart,
            end_time:      window.App.fightEnd,
            data_type:     document.getElementById('ex-data-type').value,
            ability_id:    exAbilitySelect.value,
            event_type:    document.getElementById('ex-event-type').value.trim(),
            player_name:   document.getElementById('ex-player-name').value.trim(),
            limit:         document.getElementById('ex-limit').value,
            start_offset:  document.getElementById('ex-start-offset').value,
            end_offset:    document.getElementById('ex-end-offset').value,
        };

        try {
            const res  = await fetch('api/debug-events.php', {
                method:  'POST',
                headers: { 'Content-Type': 'application/x-www-form-urlencoded' },
                body:    new URLSearchParams(params),
            });
            const json = await res.json();
            if (json.reauth) { window.location.href = 'auth/start.php'; return; }
            output.textContent = JSON.stringify(json, null, 2);
        } catch (err) {
            output.textContent = '// Fehler: ' + err.message;
        }
    });

    form.addEventListener('submit', async (e) => {
        e.preventDefault();

        initialHint.style.display     = 'none';
        outputCard.style.display      = 'block';
        output.textContent            = '// fetching...';
        fightSelectCard.style.display  = 'none';
        explorerCard.style.display     = 'none';
        fightSelect.innerHTML          = '<option value="">— Fight auswählen —</option>';
        allFights = [];

        const reportCode      = form.elements['report_code'].value.trim();
        window.App.reportCode = reportCode;
        window.App.fightId    = null;
        window.App.fightStart = 0;
        window.App.fightEnd   = 0;
        window.App.phases     = [];
        window.App.fights     = [];
        window.analysisTab?.reset?.();

        let response, json;
        try {
            response = await fetch('api/fight.php', {
                method:  'POST',
                headers: { 'Content-Type': 'application/x-www-form-urlencoded' },
                body:    new URLSearchParams({ report_code: reportCode }),
            });
            json = await response.json();
        } catch (err) {
            output.textContent = '// network error: ' + err.message;
            return;
        }

        if (json.reauth) {
            output.textContent = '// session expired — redirecting...';
            setTimeout(() => { window.location.href = 'auth/start.php'; }, 1500);
            return;
        }

        if (json.errors) {
            output.textContent = '// GraphQL error:\n' + JSON.stringify(json.errors, null, 2);
            return;
        }

        const report = json?.data?.reportData?.report;
        if (!report) {
            output.textContent = JSON.stringify(json, null, 2);
            return;
        }

        allFights = report.fights ?? [];

        if (allFights.length === 0) {
            output.textContent = '// Keine Fights in diesem Report gefunden.';
            return;
        }

        allFights.forEach(fight => {
            const duration  = formatDuration(fight.endTime - fight.startTime);
            const hp        = formatBossHp(fight);
            const opt       = document.createElement('option');
            opt.value       = fight.id;
            opt.textContent = `${fight.name} — ${duration} — ${hp}`;
            fightSelect.appendChild(opt);
        });

        window.App.fights = allFights;
        fightSelectCard.style.display = 'block';
        output.textContent            = '// Fight auswählen ↑';
        window.analysisTab?.onFightsLoaded?.(allFights);
    });
});