{% extends "base.html" %}

{% block title %}{{ lesson.title }} - SCORM Player{% endblock %}

{% block content %}
<div class="lms-player">
    <header class="lms-player__header">
        <h2>{{ lesson.title }}</h2>
        <div class="lms-player__controls">
            <a href="{{ course.url }}" class="lms-player__back-button">Back to Course</a>
            <span class="lms-player__status">Status: <span id="scorm-status">Loading...</span></span>
        </div>
    </header>

    <div class="lms-player__content">
        <iframe
            id="scorm-frame"
            src="{{ launch_url }}"
            width="100%"
            height="600"
            frameborder="0"
            allowfullscreen>
        </iframe>
    </div>
</div>

<script>
// SCORM API Implementation
var API = {
    initialized: false,
    terminated: false,

    LMSInitialize: function(parameter) {
        if (this.initialized) {
            return "false";
        }

        this.initialized = true;
        this.callAPI('Initialize', [parameter]);
        document.getElementById('scorm-status').textContent = 'Initialized';
        return "true";
    },

    LMSTerminate: function(parameter) {
        if (!this.initialized || this.terminated) {
            return "false";
        }

        this.terminated = true;
        this.callAPI('Terminate', [parameter]);
        document.getElementById('scorm-status').textContent = 'Terminated';
        return "true";
    },

    LMSGetValue: function(element) {
        if (!this.initialized || this.terminated) {
            return "";
        }

        return this.callAPI('GetValue', [element], false);
    },

    LMSSetValue: function(element, value) {
        if (!this.initialized || this.terminated) {
            return "false";
        }

        this.callAPI('SetValue', [element, value]);

        // Update status display for lesson status changes
        if (element === 'cmi.core.lesson_status') {
            document.getElementById('scorm-status').textContent = 'Status: ' + value;
        }

        return "true";
    },

    LMSCommit: function(parameter) {
        if (!this.initialized || this.terminated) {
            return "false";
        }

        this.callAPI('Commit', [parameter]);
        return "true";
    },

    LMSGetLastError: function() {
        return this.callAPI('GetLastError', [], false) || "0";
    },

    LMSGetErrorString: function(errorCode) {
        return this.callAPI('GetErrorString', [errorCode], false) || "";
    },

    LMSGetDiagnostic: function(errorCode) {
        return this.callAPI('GetDiagnostic', [errorCode], false) || "";
    },

    callAPI: function(method, parameters, async = true) {
        const data = {
            method: method,
            parameters: parameters || []
        };

        const xhr = new XMLHttpRequest();
        xhr.open('POST', '{% url "wagtail_lms:scorm_api" attempt.id %}', async);
        xhr.setRequestHeader('Content-Type', 'application/json');
        xhr.setRequestHeader('X-CSRFToken', '{{ csrf_token }}');

        if (!async) {
            xhr.send(JSON.stringify(data));
            if (xhr.status === 200) {
                const response = JSON.parse(xhr.responseText);
                return response.result;
            }
            return "";
        } else {
            xhr.onreadystatechange = function() {
                if (xhr.readyState === 4 && xhr.status === 200) {
                    const response = JSON.parse(xhr.responseText);
                    console.log('SCORM API Response:', response);
                }
            };
            xhr.send(JSON.stringify(data));
        }
    }
};

// Make API available to SCORM content
window.API = API;
window.API_1484_11 = API; // SCORM 2004 API

// Auto-save periodically
setInterval(function() {
    if (API.initialized && !API.terminated) {
        API.LMSCommit("");
    }
}, 30000); // Save every 30 seconds

// Handle page unload
window.addEventListener('beforeunload', function() {
    if (API.initialized && !API.terminated) {
        API.LMSCommit("");
        API.LMSTerminate("");
    }
});

console.log('SCORM API loaded and ready');
</script>

<style>
/* Minimal, functional styling for SCORM player */
.lms-player {
    margin: 0;
    padding: 0;
    height: 100vh;
    display: flex;
    flex-direction: column;
}

.lms-player__header {
    background-color: #f5f5f5;
    padding: 1rem 1.5rem;
    border-bottom: 1px solid #ddd;
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: 1rem;
}

.lms-player__header h2 {
    margin: 0;
    font-size: 1.5rem;
}

.lms-player__controls {
    display: flex;
    align-items: center;
    gap: 1rem;
}

.lms-player__back-button {
    display: inline-block;
    padding: 0.5rem 1rem;
    background-color: #666;
    color: white;
    text-decoration: none;
    border-radius: 4px;
    font-weight: 500;
}

.lms-player__back-button:hover {
    background-color: #555;
}

.lms-player__back-button:focus {
    background-color: #555;
    outline: 2px solid #4a90e2;
    outline-offset: 2px;
}

.lms-player__status {
    font-weight: 600;
    color: #666;
}

.lms-player__content {
    flex: 1;
    position: relative;
}

#scorm-frame {
    border: none;
    width: 100%;
    height: 100%;
}
</style>
{% endblock %}