{% extends "shared/frontend/base.html" %}

{% block title %}Workflow Editor - DEV Portal{% endblock %}

{% block extra_css %}
<style>
    #diagramContainer {
        width: 100%;
        height: calc(100vh - 200px);
        border: 1px solid #ddd;
        border-radius: 8px;
        overflow: hidden;
    }
    
    .editor-toolbar {
        background: var(--bg-card);
        padding: 1rem;
        border-radius: 8px;
        margin-bottom: 1rem;
    }
</style>
{% endblock %}

{% block content %}
<div class="mb-4">
    <a href="/devportal" class="btn btn-light">
        <i class="bi bi-arrow-left me-2"></i>Tilbage til DEV Portal
    </a>
</div>

<div class="editor-toolbar">
    <div class="row align-items-center">
        <div class="col-md-4">
            <input type="text" class="form-control" id="workflowTitle" placeholder="Workflow titel...">
        </div>
        <div class="col-md-3">
            <input type="text" class="form-control" id="workflowDescription" placeholder="Beskrivelse...">
        </div>
        <div class="col-md-2">
            <select class="form-select" id="workflowCategory">
                <option value="flowchart">Flowchart</option>
                <option value="process">Proces</option>
                <option value="system_diagram">System Diagram</option>
                <option value="other">Andet</option>
            </select>
        </div>
        <div class="col-md-3 text-end">
            <button class="btn btn-success" onclick="saveWorkflow()">
                <i class="bi bi-save me-2"></i>Gem Workflow
            </button>
        </div>
    </div>
</div>

<div id="diagramContainer">
    <iframe id="diagramFrame" frameborder="0" style="width: 100%; height: 100%;"></iframe>
</div>

{% endblock %}

{% block extra_js %}
<script>
let currentWorkflowId = {{ workflow_id if workflow_id else 'null' }};
let diagramXml = null;

function initEditor() {
    const iframe = document.getElementById('diagramFrame');
    
    // Build draw.io embed URL with parameters
    const params = new URLSearchParams({
        embed: '1',
        ui: 'kennedy',
        spin: '1',
        proto: 'json',
        configure: '1',
        noSaveBtn: '1',
        noExitBtn: '1',
        libraries: '1',
        saveAndExit: '0'
    });
    
    iframe.src = `https://embed.diagrams.net/?${params.toString()}`;
    
    // Listen for messages from draw.io
    window.addEventListener('message', function(evt) {
        if (evt.data.length > 0) {
            try {
                const msg = JSON.parse(evt.data);
                
                // When editor is ready
                if (msg.event === 'init') {
                    iframe.contentWindow.postMessage(JSON.stringify({
                        action: 'load',
                        autosave: 1,
                        xml: diagramXml || '' // Load existing diagram if editing
                    }), '*');
                }
                
                // When diagram is exported
                if (msg.event === 'export') {
                    diagramXml = msg.xml;
                }
                
                // Auto-save on every change
                if (msg.event === 'autosave') {
                    diagramXml = msg.xml;
                }
                
                // Request export when saving
                if (msg.event === 'save') {
                    iframe.contentWindow.postMessage(JSON.stringify({
                        action: 'export',
                        format: 'xml'
                    }), '*');
                }
            } catch (e) {
                // Ignore non-JSON messages
            }
        }
    });
}

async function loadWorkflow() {
    if (!currentWorkflowId) return;
    
    try {
        const response = await fetch(`/api/v1/devportal/workflows/${currentWorkflowId}`);
        const workflow = await response.json();
        
        document.getElementById('workflowTitle').value = workflow.title;
        document.getElementById('workflowDescription').value = workflow.description || '';
        document.getElementById('workflowCategory').value = workflow.category || 'flowchart';
        diagramXml = workflow.diagram_xml;
        
        // Reinitialize editor with loaded data
        initEditor();
    } catch (error) {
        console.error('Error loading workflow:', error);
    }
}

async function saveWorkflow() {
    const title = document.getElementById('workflowTitle').value;
    const description = document.getElementById('workflowDescription').value;
    const category = document.getElementById('workflowCategory').value;
    
    if (!title) {
        alert('Indtast venligst en titel');
        return;
    }
    
    // Request export from draw.io
    const iframe = document.getElementById('diagramFrame');
    iframe.contentWindow.postMessage(JSON.stringify({
        action: 'export',
        format: 'xml'
    }), '*');
    
    // Wait a bit for export to complete
    setTimeout(async () => {
        if (!diagramXml) {
            alert('Kunne ikke eksportere diagram. Prøv igen.');
            return;
        }
        
        const workflow = {
            title,
            description,
            category,
            diagram_xml: diagramXml
        };
        
        try {
            let response;
            if (currentWorkflowId) {
                // Update existing
                response = await fetch(`/api/v1/devportal/workflows/${currentWorkflowId}`, {
                    method: 'PUT',
                    headers: { 'Content-Type': 'application/json' },
                    body: JSON.stringify(workflow)
                });
            } else {
                // Create new
                response = await fetch('/api/v1/devportal/workflows', {
                    method: 'POST',
                    headers: { 'Content-Type': 'application/json' },
                    body: JSON.stringify(workflow)
                });
            }
            
            if (response.ok) {
                const result = await response.json();
                alert('Workflow gemt!');
                window.location.href = '/devportal';
            } else {
                alert('Fejl ved gemning af workflow');
            }
        } catch (error) {
            console.error('Error saving workflow:', error);
            alert('Fejl ved gemning af workflow');
        }
    }, 500);
}

// Initialize on load
document.addEventListener('DOMContentLoaded', () => {
    if (currentWorkflowId) {
        loadWorkflow();
    } else {
        initEditor();
    }
});
</script>
{% endblock %}