// API endpoints
const API_BASE_URL = '/api/claude';
const ENDPOINTS = {
    listJobs: `${API_BASE_URL}/list-jobs`,
    manageJob: `${API_BASE_URL}/jobs`,
    jobLogs: `${API_BASE_URL}/job-logs`
};

// DOM elements
const elements = {
    namespaceSelector: document.getElementById('namespace-selector'),
    refreshBtn: document.getElementById('refresh-btn'),
    jobList: document.getElementById('job-list'),
    jobTable: document.getElementById('job-table'),
    jobDetails: document.getElementById('job-details'),
    logContent: document.getElementById('log-content'),
    logTabs: document.querySelectorAll('.log-tab'),
    loading: document.getElementById('loading'),
    errorMessage: document.getElementById('error-message')
};

// State
let state = {
    jobs: [],
    selectedJob: null,
    selectedNamespace: 'development',
    logs: {
        stdout: '',
        stderr: '',
        currentTab: 'stdout'
    }
};

// Initialize the app
function init() {
    // Set up event listeners
    elements.namespaceSelector.addEventListener('change', handleNamespaceChange);
    elements.refreshBtn.addEventListener('click', loadJobs);
    elements.logTabs.forEach(tab => {
        tab.addEventListener('click', () => {
            const logType = tab.getAttribute('data-log-type');
            switchLogTab(logType);
        });
    });

    // Load initial jobs
    loadJobs();
}

// Load jobs from the API
async function loadJobs() {
    showLoading(true);
    hideError();
    
    try {
        const namespace = elements.namespaceSelector.value;
        const response = await fetch(`${ENDPOINTS.listJobs}?namespace=${namespace}`);
        
        if (!response.ok) {
            throw new Error(`Failed to load jobs: ${response.statusText}`);
        }
        
        const jobs = await response.json();
        state.jobs = jobs;
        state.selectedNamespace = namespace;
        
        renderJobList();
        showLoading(false);
    } catch (error) {
        console.error('Error loading jobs:', error);
        showError(`Failed to load jobs: ${error.message}`);
        showLoading(false);
    }
}

// Render the job list
function renderJobList() {
    elements.jobList.innerHTML = '';
    
    if (state.jobs.length === 0) {
        const row = document.createElement('tr');
        row.innerHTML = `<td colspan="4" class="no-jobs">No jobs found in the ${state.selectedNamespace} namespace</td>`;
        elements.jobList.appendChild(row);
        return;
    }
    
    state.jobs.forEach(job => {
        const row = document.createElement('tr');
        row.setAttribute('data-job-id', job.id);
        row.innerHTML = `
            <td>${job.id}</td>
            <td>${job.type}</td>
            <td><span class="status status-${job.status.toLowerCase()}">${job.status}</span></td>
            <td class="job-actions">
                <button class="btn btn-primary btn-view" data-job-id="${job.id}">View</button>
                <button class="btn btn-success btn-restart" data-job-id="${job.id}">Restart</button>
                <button class="btn btn-danger btn-stop" data-job-id="${job.id}">Stop</button>
            </td>
        `;
        
        elements.jobList.appendChild(row);
    });
    
    // Add event listeners to buttons
    document.querySelectorAll('.btn-view').forEach(btn => {
        btn.addEventListener('click', () => viewJob(btn.getAttribute('data-job-id')));
    });
    
    document.querySelectorAll('.btn-restart').forEach(btn => {
        btn.addEventListener('click', () => restartJob(btn.getAttribute('data-job-id')));
    });
    
    document.querySelectorAll('.btn-stop').forEach(btn => {
        btn.addEventListener('click', () => stopJob(btn.getAttribute('data-job-id')));
    });
}

// View job details
async function viewJob(jobId) {
    showLoading(true);
    
    try {
        // Get job status
        const statusResponse = await fetch(ENDPOINTS.manageJob, {
            method: 'POST',
            headers: {
                'Content-Type': 'application/json'
            },
            body: JSON.stringify({
                job_id: jobId,
                action: 'status',
                namespace: state.selectedNamespace
            })
        });
        
        if (!statusResponse.ok) {
            throw new Error(`Failed to get job status: ${statusResponse.statusText}`);
        }
        
        const jobStatus = await statusResponse.json();
        state.selectedJob = jobStatus;
        
        // Get job logs
        const logsResponse = await fetch(`${ENDPOINTS.jobLogs}/${jobId}?namespace=${state.selectedNamespace}`);
        
        if (logsResponse.ok) {
            const logsData = await logsResponse.json();
            
            if (logsData.success) {
                state.logs.stdout = logsData.logs.stdout || 'No stdout logs available';
                state.logs.stderr = logsData.logs.stderr || 'No stderr logs available';
            } else {
                state.logs.stdout = 'Logs not available';
                state.logs.stderr = 'Logs not available';
            }
        } else {
            state.logs.stdout = 'Failed to load logs';
            state.logs.stderr = 'Failed to load logs';
        }
        
        renderJobDetails();
        renderLogs();
        showLoading(false);
        
        // Highlight the selected job in the table
        document.querySelectorAll('#job-list tr').forEach(row => {
            row.classList.remove('selected');
        });
        
        const selectedRow = document.querySelector(`#job-list tr[data-job-id="${jobId}"]`);
        if (selectedRow) {
            selectedRow.classList.add('selected');
        }
    } catch (error) {
        console.error('Error viewing job:', error);
        showError(`Failed to view job: ${error.message}`);
        showLoading(false);
    }
}

// Restart a job
async function restartJob(jobId) {
    if (!confirm(`Are you sure you want to restart job "${jobId}"?`)) {
        return;
    }
    
    showLoading(true);
    
    try {
        const response = await fetch(ENDPOINTS.manageJob, {
            method: 'POST',
            headers: {
                'Content-Type': 'application/json'
            },
            body: JSON.stringify({
                job_id: jobId,
                action: 'restart',
                namespace: state.selectedNamespace
            })
        });
        
        if (!response.ok) {
            throw new Error(`Failed to restart job: ${response.statusText}`);
        }
        
        const result = await response.json();
        
        if (result.success) {
            alert(`Job "${jobId}" has been restarted successfully.`);
            loadJobs();
        } else {
            throw new Error(result.message);
        }
        
        showLoading(false);
    } catch (error) {
        console.error('Error restarting job:', error);
        showError(`Failed to restart job: ${error.message}`);
        showLoading(false);
    }
}

// Stop a job
async function stopJob(jobId) {
    const purge = confirm(`Do you want to purge job "${jobId}" after stopping?`);
    
    if (!confirm(`Are you sure you want to stop job "${jobId}"?`)) {
        return;
    }
    
    showLoading(true);
    
    try {
        const response = await fetch(ENDPOINTS.manageJob, {
            method: 'POST',
            headers: {
                'Content-Type': 'application/json'
            },
            body: JSON.stringify({
                job_id: jobId,
                action: 'stop',
                namespace: state.selectedNamespace,
                purge: purge
            })
        });
        
        if (!response.ok) {
            throw new Error(`Failed to stop job: ${response.statusText}`);
        }
        
        const result = await response.json();
        
        if (result.success) {
            alert(`Job "${jobId}" has been stopped${purge ? ' and purged' : ''} successfully.`);
            loadJobs();
        } else {
            throw new Error(result.message);
        }
        
        showLoading(false);
    } catch (error) {
        console.error('Error stopping job:', error);
        showError(`Failed to stop job: ${error.message}`);
        showLoading(false);
    }
}

// Render job details
function renderJobDetails() {
    if (!state.selectedJob) {
        elements.jobDetails.innerHTML = '<p class="select-job-message">Select a job to view details</p>';
        return;
    }
    
    const job = state.selectedJob;
    const details = job.details?.job || {};
    const allocation = job.details?.latest_allocation || {};
    
    let detailsHtml = `
        <h3>${job.job_id}</h3>
        <p><span class="label">Status:</span> <span class="status status-${job.status.toLowerCase()}">${job.status}</span></p>
    `;
    
    if (details.Type) {
        detailsHtml += `<p><span class="label">Type:</span> ${details.Type}</p>`;
    }
    
    if (details.Namespace) {
        detailsHtml += `<p><span class="label">Namespace:</span> ${details.Namespace}</p>`;
    }
    
    if (details.Datacenters) {
        detailsHtml += `<p><span class="label">Datacenters:</span> ${details.Datacenters.join(', ')}</p>`;
    }
    
    if (allocation.ID) {
        detailsHtml += `
            <h3>Latest Allocation</h3>
            <p><span class="label">ID:</span> ${allocation.ID}</p>
            <p><span class="label">Status:</span> ${allocation.ClientStatus || 'Unknown'}</p>
        `;
        
        if (allocation.ClientDescription) {
            detailsHtml += `<p><span class="label">Description:</span> ${allocation.ClientDescription}</p>`;
        }
    }
    
    elements.jobDetails.innerHTML = detailsHtml;
}

// Render logs
function renderLogs() {
    elements.logContent.textContent = state.logs[state.logs.currentTab];
}

// Switch log tab
function switchLogTab(logType) {
    state.logs.currentTab = logType;
    
    // Update active tab
    elements.logTabs.forEach(tab => {
        if (tab.getAttribute('data-log-type') === logType) {
            tab.classList.add('active');
        } else {
            tab.classList.remove('active');
        }
    });
    
    renderLogs();
}

// Handle namespace change
function handleNamespaceChange() {
    loadJobs();
}

// Show/hide loading indicator
function showLoading(show) {
    elements.loading.style.display = show ? 'block' : 'none';
    elements.jobTable.style.display = show ? 'none' : 'table';
}

// Show error message
function showError(message) {
    elements.errorMessage.textContent = message;
    elements.errorMessage.style.display = 'block';
}

// Hide error message
function hideError() {
    elements.errorMessage.style.display = 'none';
}

// Initialize the app when the DOM is loaded
document.addEventListener('DOMContentLoaded', init);