{% extends "pdf_base.html" %}

{% block title %}Legacy Data Export - OJHunt Lite{% endblock %}

{% block pdf_content %}
    <h1>Download Your acm-statistics (OJHunt Heavy) History</h1>
    <p class="subtitle">Recover your competitive programming history from the old site</p>

    <div class="info-box">
        <strong>What happened to the old site?</strong><br>
        <em>acm-statistics</em> was my college side project — a great excuse to throw every exciting
        new technology into one codebase: .NET Core, Vue.js + Nuxt.js, microservices, a multi-image
        Docker build system, docker-compose… The kind of over-engineering only a student with too
        much enthusiasm and too little maintenance budget can produce.<br><br>
        As years passed, .NET upgrades arrived annually and JS frameworks hit major breaking changes
        every few months. Even with Renovate automating dependency PRs, keeping everything working
        demanded constant manual intervention. Then in October 2025 the VPS provider (CloudCone) was
        compromised, and all data after <strong>2025-10-22</strong> was lost in the incident.<br><br>
        That was the final push to start over. OJHunt Lite was rewritten from scratch with the
        opposite philosophy: as few dependencies as possible, no stored user data — you hold your own
        history in a PDF. One server incident can no longer erase your records.
    </div>

    {% if error %}
        <div class="error-box">{{ error }}</div>
    {% endif %}

    {% if legacy_available %}
        <form method="POST" action="/pdf/legacy">
            <div class="form-group">
                <label for="username">
                    Your old username
                    <span class="hint">(the username you used on acm-statistics for logging-in)</span>
                </label>
                <input type="text" id="username" name="username"
                       value="{{ prefill_username or '' }}"
                       placeholder="Enter username" required autofocus>
            </div>
            <button type="submit" class="btn-primary">Download History PDF</button>
        </form>

        <div class="help-text">
            <strong>What you'll get:</strong> A PDF containing your daily solve-count history up to
            2025-10-22, in the same format as OJHunt Lite reports. You can upload it on the
            <a href="/">home page</a> to restore your crawler list, or
            <a href="/pdf/merge">merge it</a> with a more recent OJHunt Lite report to combine histories.
            <br><br>
            <strong>Store the PDF on your own device</strong> — don't rely on browser storage,
            which can be cleared at any time.
        </div>
    {% else %}
        <div class="notice-box">
            Legacy data is not currently available on this server. If you are running OJHunt Lite
            locally, place <code>legacy.db</code> in the working directory and restart the server.
            For Docker deployments, mount the file at <code>/app/legacy.db</code>.
        </div>
    {% endif %}

    <div class="help-text" style="margin-top: 2rem;">
        Questions or issues?
        <a href="https://github.com/Liu233w/ojhunt-lite/issues" target="_blank" rel="noopener noreferrer">Open an issue on GitHub</a>
        or <a href="/about">see the About page</a> for contact details.
    </div>
{% endblock %}