/**
 * Pipeline Runner - Client Side Logic
 * Gestion de l'exécution des pipelines sauvegardés
 */

// État global
const state = {
    pipelines: [],
    selectedPipeline: null,
    running: false
};

// ====================
// INITIALIZATION
// ====================

window.onload = async function() {
    await loadPipelinesList();
};

// Charger la liste des pipelines
async function loadPipelinesList() {
    try {
        const response = await fetch('/api/pipeline/list');
        const data = await response.json();

        if (data.success) {
            state.pipelines = data.pipelines;
            renderPipelinesDropdown();
        }
    } catch (error) {
        showStatus(`Erreur chargement pipelines: ${error.message}`, 'error');
    }
}

// Rendre le dropdown de pipelines
function renderPipelinesDropdown() {
    const select = document.getElementById('pipelineSelect');
    select.innerHTML = '<option value="">-- Sélectionner un pipeline --</option>';

    state.pipelines.forEach(pipeline => {
        const option = document.createElement('option');
        option.value = pipeline.name;
        option.textContent = `${pipeline.name} (${pipeline.steps} étapes, ~${pipeline.estimatedDuration})`;
        select.appendChild(option);
    });
}

// ====================
// PIPELINE LOADING
// ====================

async function loadPipeline() {
    const select = document.getElementById('pipelineSelect');
    const pipelineName = select.value;

    if (!pipelineName) {
        document.getElementById('pipelinePreview').style.display = 'none';
        document.getElementById('btnRun').disabled = true;
        return;
    }

    try {
        const response = await fetch(`/api/pipeline/${pipelineName}`);
        const data = await response.json();

        if (data.success) {
            state.selectedPipeline = data.pipeline;
            displayPipelinePreview(data.pipeline);
            document.getElementById('btnRun').disabled = false;
        }
    } catch (error) {
        showStatus(`Erreur chargement pipeline: ${error.message}`, 'error');
    }
}

// Afficher la prévisualisation du pipeline
function displayPipelinePreview(pipeline) {
    const preview = document.getElementById('pipelinePreview');
    preview.style.display = 'block';

    document.getElementById('pipelineName').textContent = pipeline.name;
    document.getElementById('pipelineDesc').textContent = pipeline.description || 'Pas de description';

    document.getElementById('summarySteps').textContent = pipeline.pipeline.length;

    // Estimation durée
    const estimatedSeconds = pipeline.pipeline.length * 20; // Rough estimate
    const minutes = Math.floor(estimatedSeconds / 60);
    const seconds = estimatedSeconds % 60;
    document.getElementById('summaryDuration').textContent = minutes > 0
        ? `${minutes}m ${seconds}s`
        : `${seconds}s`;

    // Liste des étapes
    const stepList = document.getElementById('stepList');
    stepList.innerHTML = '';

    pipeline.pipeline.forEach(step => {
        const div = document.createElement('div');
        div.className = 'step-item';
        div.textContent = `${step.step}. ${step.module} (${step.mode}) - Intensité: ${step.intensity}`;
        stepList.appendChild(div);
    });
}

// ====================
// PIPELINE EXECUTION
// ====================

async function runPipeline() {
    if (!state.selectedPipeline) {
        showStatus('Aucun pipeline sélectionné', 'error');
        return;
    }

    if (state.running) {
        showStatus('Une exécution est déjà en cours', 'error');
        return;
    }

    const rowNumber = parseInt(document.getElementById('rowNumber').value);

    if (!rowNumber || rowNumber < 2) {
        showStatus('Numéro de ligne invalide (minimum 2)', 'error');
        return;
    }

    state.running = true;
    document.getElementById('btnRun').disabled = true;

    // Show progress section
    document.getElementById('progressSection').style.display = 'block';
    document.getElementById('progressBar').style.display = 'block';
    document.getElementById('progressText').style.display = 'block';
    document.getElementById('resultsSection').style.display = 'none';

    showStatus('🚀 Exécution du pipeline en cours...', 'loading');
    updateProgress(0, 'Initialisation...');

    try {
        const response = await fetch('/api/pipeline/execute', {
            method: 'POST',
            headers: { 'Content-Type': 'application/json' },
            body: JSON.stringify({
                pipelineConfig: state.selectedPipeline,
                rowNumber: rowNumber
            })
        });

        updateProgress(50, 'Traitement en cours...');

        const data = await response.json();

        updateProgress(100, 'Terminé!');

        if (data.success) {
            displayResults(data.result);
            showStatus('✅ Pipeline exécuté avec succès!', 'success');
        } else {
            showStatus(`❌ Erreur: ${data.error}`, 'error');
        }

    } catch (error) {
        showStatus(`❌ Erreur exécution: ${error.message}`, 'error');
        console.error('Execution error:', error);
    } finally {
        state.running = false;
        document.getElementById('btnRun').disabled = false;

        setTimeout(() => {
            document.getElementById('progressSection').style.display = 'none';
        }, 2000);
    }
}

// ====================
// RESULTS DISPLAY
// ====================

function displayResults(result) {
    const resultsSection = document.getElementById('resultsSection');
    resultsSection.style.display = 'block';

    // Stats
    document.getElementById('statDuration').textContent =
        `${result.stats.totalDuration}ms`;

    document.getElementById('statSuccessSteps').textContent =
        `${result.stats.successfulSteps}/${result.stats.totalSteps}`;

    document.getElementById('statPersonality').textContent =
        result.stats.personality || 'N/A';

    // Execution log
    const logContainer = document.getElementById('executionLog');
    logContainer.innerHTML = '';

    if (result.executionLog && result.executionLog.length > 0) {
        result.executionLog.forEach(logEntry => {
            const div = document.createElement('div');
            div.className = `log-entry ${logEntry.success ? 'log-success' : 'log-error'}`;

            const status = logEntry.success ? '✓' : '✗';
            const text = `${status} Étape ${logEntry.step}: ${logEntry.module} (${logEntry.mode}) ` +
                        `- ${logEntry.duration}ms`;

            if (logEntry.modifications !== undefined) {
                div.textContent = text + ` - ${logEntry.modifications} modifs`;
            } else {
                div.textContent = text;
            }

            if (!logEntry.success && logEntry.error) {
                div.textContent += ` - Erreur: ${logEntry.error}`;
            }

            logContainer.appendChild(div);
        });
    } else {
        logContainer.textContent = 'Aucun log d\'exécution disponible';
    }
}

// ====================
// HELPERS
// ====================

function updateProgress(percentage, text) {
    document.getElementById('progressFill').style.width = percentage + '%';
    document.getElementById('progressText').textContent = text;
}

function showStatus(message, type) {
    const status = document.getElementById('status');
    status.textContent = message;
    status.className = `status ${type}`;
    status.style.display = 'block';

    if (type !== 'loading') {
        setTimeout(() => {
            status.style.display = 'none';
        }, 5000);
    }
}