// API Client Functions

import { applySnapshotParam } from './dataset.js';

function _sleep(ms) {
    return new Promise(function (resolve) {
        setTimeout(resolve, ms);
    });
}

let _projectSummaries = [];
let _projectSummaryInitialized = false;

export function getProjectSummaries() {
    return _projectSummaries;
}

function _renderProjectSummary(projectId) {
    const summaryDiv = document.getElementById('projectSummary');
    if (!summaryDiv) return;

    if (!projectId) {
        summaryDiv.style.display = 'none';
        summaryDiv.innerHTML = '';
        return;
    }

    let match = null;
    for (const item of _projectSummaries) {
        if (item.project_id === projectId) {
            match = item;
            break;
        }
    }
    if (!match) {
        summaryDiv.style.display = 'none';
        summaryDiv.innerHTML = '';
        return;
    }

    summaryDiv.style.display = 'block';
    summaryDiv.innerHTML = `
        <div class="project-summary-title">Project Summary</div>
        <div class="project-summary-details">
            <span><strong>${match.conversation_count}</strong> conversations</span>
            <span><strong>${match.message_count}</strong> messages</span>
            <span>Updated ${new Date(match.updated_at).toLocaleDateString()}</span>
        </div>
    `;
}

export async function loadProjects() {
    const params = applySnapshotParam(new URLSearchParams());
    const url = params.toString() ? `/api/projects/summary?${params.toString()}` : '/api/projects/summary';
    const response = await fetch(url);

    if (response.status === 503) {
        const payload = await response.json();
        if (payload && payload.status === 'warming') {
            // Retry after warmup delay
            await _sleep(payload.retry_after_ms || 500);
            return loadProjects();
        }

        console.error('Failed to load projects:', payload);
        return;
    }

    if (!response.ok) {
        const payload = await response.json().catch(function () { return null; });
        console.error('Failed to load projects:', payload);
        return;
    }

    const projects = await response.json();
    const select = document.getElementById('project');
    const currentValue = select.value;

    _projectSummaries = Array.isArray(projects) ? projects : [];

    for (const project of _projectSummaries) {
        const option = document.createElement('option');
        option.value = project.project_id;
        const label = `${project.project_id} (${project.conversation_count})`;
        if (project.project_id.startsWith('opencode-')) {
            option.textContent = `OpenCode • ${label}`;
        } else if (project.project_id.startsWith('vibe-')) {
            option.textContent = `Vibe • ${label}`;
        } else {
            option.textContent = `Claude Code • ${label}`;
        }
        select.appendChild(option);
    }

    // Restore previous value if it exists
    if (currentValue) select.value = currentValue;

    if (!_projectSummaryInitialized) {
        function handleProjectChange() {
            _renderProjectSummary(select.value);
        }

        select.addEventListener('change', handleProjectChange);
        _projectSummaryInitialized = true;
    }

    _renderProjectSummary(select.value);
}

export async function indexMissing() {
    const resultsDiv = document.getElementById('results');
    resultsDiv.innerHTML = '<div class="loading">Scanning for missing conversations... This may take a minute...</div>';

    try {
        const response = await fetch('/api/index_missing', { method: 'POST' });
        const data = await response.json();

        if (data.success) {
            const failedInfo = data.failed_conversations > 0
                ? ` | <strong style="color: #721c24;">${data.failed_conversations} failed</strong>`
                : '';

            if (data.new_conversations === 0) {
                const notifClass = data.failed_conversations > 0 ? 'notification-warning' : 'notification-info';
                const statusText = data.failed_conversations > 0
                    ? `All valid conversations indexed (${data.failed_conversations} corrupt files skipped)`
                    : 'All conversations are already indexed';

                resultsDiv.innerHTML = `
                    <div class="notification ${notifClass}">
                        <strong>${statusText}</strong>
                        <div class="notification-details">
                            <strong>Total files:</strong> ${data.total_files} | <strong>Already indexed:</strong> ${data.already_indexed}${failedInfo}
                        </div>
                        <div class="notification-hint">
                            The live file watcher will automatically index new conversations as you create them.
                        </div>
                    </div>
                `;
            } else {
                const notifClass = data.failed_conversations > 0 ? 'notification-warning' : 'notification-success';

                resultsDiv.innerHTML = `
                    <div class="notification ${notifClass}">
                        <strong>Added ${data.new_conversations} conversations to index</strong>
                        <div class="notification-details">
                            <strong>Total files:</strong> ${data.total_files} | <strong>Previously indexed:</strong> ${data.already_indexed} | <strong>Time:</strong> ${data.time_seconds}s${failedInfo}
                        </div>
                        <div class="notification-hint">
                            Your new conversations are now searchable!
                        </div>
                    </div>
                `;

                // Reload projects list
                const projectSelect = document.getElementById('project');
                projectSelect.innerHTML = '<option value="">All Projects</option>';
                await loadProjects();
            }
        } else {
            resultsDiv.innerHTML = '<div class="notification notification-error"><strong>Indexing failed</strong></div>';
        }
    } catch (error) {
        resultsDiv.innerHTML = `<div style="color: #f44336;">Error: ${error.message}</div>`;
    }
}

export async function shutdownServer(force = false) {
    if (!force && !confirm('Stop the search server? You will need to restart it from the terminal.')) {
        return;
    }

    const resultsDiv = document.getElementById('results');
    resultsDiv.innerHTML = '<div class="loading">Checking server status...</div>';

    try {
        const url = force ? '/api/shutdown?force=true' : '/api/shutdown';
        const response = await fetch(url, { method: 'POST' });
        const data = await response.json();

        if (data.success) {
            let warningStyle = 'background: #f44336;';
            let warningMsg = '';
            if (data.forced) {
                warningStyle = 'background: #ff9800; border-left-color: #ff5722;';
                warningMsg = '<div style="margin-top: 8px; color: #fff; font-weight: 600;">⚠ FORCED SHUTDOWN - Indexing was interrupted. Index may be inconsistent.</div>';
            }

            resultsDiv.innerHTML = `
                <div class="results-header" style="${warningStyle} padding: 15px;">
                    <strong>✓ Server shutting down</strong>
                    ${warningMsg}
                    <div style="margin-top: 8px; opacity: 0.9;">
                        You can close this window. To restart, run: <code style="background: #333; padding: 2px 6px;">searchat-web</code>
                    </div>
                </div>
            `;
        } else if (data.indexing_in_progress) {
            // Indexing is in progress - offer options
            resultsDiv.innerHTML = `
                <div class="results-header" style="background: #ff9800; padding: 15px; border-left: 3px solid #ff5722;">
                    <strong>⚠ Indexing in Progress</strong>
                    <div style="margin-top: 8px;">
                        <strong>Operation:</strong> ${data.operation}<br>
                        <strong>Files:</strong> ${data.files_total}<br>
                        <strong>Elapsed:</strong> ${data.elapsed_seconds}s
                    </div>
                    <div style="margin-top: 12px; color: #fff;">
                        Shutting down during indexing may corrupt data.
                    </div>
                    <div style="margin-top: 12px;">
                        <button onclick="import('./modules/api.js').then(m => m.shutdownServer(true))" style="background: #f44336; color: white; border: none; padding: 8px 16px; cursor: pointer; margin-right: 10px;">
                            Force Stop (Unsafe)
                        </button>
                        <button onclick="document.getElementById('results').innerHTML = ''" style="background: #4CAF50; color: white; border: none; padding: 8px 16px; cursor: pointer;">
                            Wait for Completion
                        </button>
                    </div>
                </div>
            `;
        } else {
            resultsDiv.innerHTML = '<div style="color: #f44336;">Shutdown failed</div>';
        }
    } catch (error) {
        // Server likely already shut down, which is expected
        resultsDiv.innerHTML = `
            <div class="results-header" style="background: #f44336; padding: 15px;">
                <strong>✓ Server stopped</strong>
                <div style="margin-top: 8px; opacity: 0.9;">
                    You can close this window. To restart, run: <code style="background: #333; padding: 2px 6px;">searchat-web</code>
                </div>
            </div>
        `;
    }
}
