{% extends "base.html" %}
{% block title %}Import Transactions{% endblock %}
{% block page_title %}Import CSV{% endblock %}

{% block topbar_actions %}
<a href="{{ url_for('settings.index') }}" class="btn btn-sm btn-outline-secondary me-1" style="font-size:12px;"><i class="bi bi-arrow-left me-1"></i>Settings</a>
{% endblock %}

{% block content %}
<div class="row g-3">
<div class="col-12 col-lg-6">
<div class="pcard">
    <div class="pcard-title mb-3">Upload CSV File</div>

    <!-- Format guide -->
    <div class="mb-4 p-3" style="background:#f8fafc;border-radius:8px;font-size:12px;">
        <div class="fw-semibold mb-2" style="font-size:13px;">Required CSV format:</div>
        <code style="font-size:11px;background:#0f172a;color:#10b981;padding:8px 12px;border-radius:6px;display:block;line-height:1.8;">
            date,type,description,category,account,amount,notes<br>
            2025-01-15,expense,Groceries,Food &amp; Dining,Checking,85.50,Weekly shop<br>
            2025-01-16,income,Salary,Salary,Checking,3000.00,
        </code>
        <div class="mt-2 text-muted">
            <strong>Required:</strong> date, type (income/expense), description, amount<br>
            <strong>Optional:</strong> category, account, notes<br>
            <strong>Date formats:</strong> YYYY-MM-DD, MM/DD/YYYY, DD/MM/YYYY
        </div>
    </div>

    <form method="POST" enctype="multipart/form-data" novalidate>
        {{ form.hidden_tag() }}

        <div class="mb-3">
            {{ form.csv_file.label(class="form-label fw-medium", style="font-size:13px;") }}
            {{ form.csv_file(class="form-control" + (" is-invalid" if form.csv_file.errors else "")) }}
            {% for e in form.csv_file.errors %}<div class="invalid-feedback">{{ e }}</div>{% endfor %}
        </div>

        <div class="mb-3">
            {{ form.default_account_id.label(class="form-label fw-medium", style="font-size:13px;") }}
            {{ form.default_account_id(class="form-select") }}
            <small class="text-muted" style="font-size:11px;">Used when account column is missing or unrecognised.</small>
        </div>

        <div class="mb-4">
            <div class="form-check">
                {{ form.skip_duplicates(class="form-check-input") }}
                {{ form.skip_duplicates.label(class="form-check-label", style="font-size:13px;") }}
            </div>
        </div>

        {{ form.submit(class="btn btn-primary") }}
    </form>
</div>
</div>

{% if parse_errors %}
<div class="col-12 col-lg-6">
    <div class="pcard" style="border-color:#fca5a5;">
        <div class="pcard-title mb-2" style="color:#ef4444;">Parse Errors</div>
        {% for err in parse_errors %}
        <div style="font-size:12px;color:#ef4444;padding:4px 0;border-bottom:1px solid #fee2e2;">{{ err }}</div>
        {% endfor %}
    </div>
</div>
{% endif %}

{% if preview %}
<div class="col-12">
    <div class="pcard p-0">
        <div class="d-flex justify-content-between align-items-center px-4 py-3" style="border-bottom:1px solid var(--border);">
            <span class="pcard-title mb-0">Preview — {{ preview | length }} rows ready to import</span>
            <form method="POST" action="{{ url_for('settings.import_confirm') }}">
                <input type="hidden" name="csrf_token" value="{{ csrf_token() }}">
                <button type="submit" class="btn btn-sm btn-success" style="font-size:12px;">
                    <i class="bi bi-check-lg me-1"></i>Confirm Import
                </button>
            </form>
        </div>
        <table class="pfm-table">
            <thead>
                <tr>
                    <th style="padding-left:20px;">Date</th>
                    <th>Type</th>
                    <th>Description</th>
                    <th>Category</th>
                    <th>Account</th>
                    <th class="text-end" style="padding-right:20px;">Amount</th>
                </tr>
            </thead>
            <tbody>
            {% for row in preview[:20] %}
            <tr>
                <td style="padding-left:20px;font-size:12px;color:var(--muted);">{{ row.date.strftime('%b %d, %Y') }}</td>
                <td><span class="badge {% if row.transaction_type == 'income' %}badge-income{% else %}badge-expense{% endif %}" style="font-size:11px;">{{ row.transaction_type | title }}</span></td>
                <td style="font-size:13px;">{{ row.description }}</td>
                <td style="font-size:12px;color:var(--muted);">
                    {{ row.category_name or '—' }}
                    {% if row.category_name and not row.category_id %}
                    <span title="Category not found — will be uncategorized" style="color:#f59e0b;">⚠</span>
                    {% endif %}
                </td>
                <td style="font-size:12px;color:var(--muted);">
                    {{ row.account_name or '—' }}
                    {% if not row.account_id %}
                    <span title="Account not found — will be unlinked" style="color:#f59e0b;">⚠</span>
                    {% endif %}
                </td>
                <td class="text-end mono {% if row.transaction_type == 'income' %}text-income{% else %}text-expense{% endif %}" style="font-size:13px;padding-right:20px;">{{ row.amount | currency }}</td>
            </tr>
            {% endfor %}
            {% if preview | length > 20 %}
            <tr><td colspan="6" class="text-center py-2" style="font-size:12px;color:var(--muted);">... and {{ (preview | length) - 20 }} more rows</td></tr>
            {% endif %}
            </tbody>
        </table>
    </div>
</div>
{% endif %}
</div>
{% endblock %}