{% extends 'base.html' %}
{% load static i18n %}

{% block title %}Candidate Tier Management - {{ job.title }} - ATS{% endblock %}

{% block content %}
<div class="container-fluid py-4">
    <div class="d-flex justify-content-between align-items-center mb-4">
        <div>
            <h1 class="h3 mb-1 page-header">
                <i class="fas fa-edit me-2"></i>
                {% trans "Exam Management" %} - {{ job.title }}
            </h1>
            <h2 class="h5 text-muted mb-0">
                {% trans "Candidates in Exam Stage:" %} <span class="fw-bold">{{ total_candidates }}</span>
            </h2>
        </div>
        <a href="{% url 'job_detail' job.slug %}" class="btn btn-outline-secondary">
            <i class="fas fa-arrow-left me-1"></i> {% trans "Back to Job" %}
        </a>
    </div>

    <div class="applicant-tracking-timeline mb-4">
        {% include 'jobs/partials/applicant_tracking.html' %}
    </div>

    <h2 class="h4 mb-3" style="color: var(--kaauh-primary-text);">
        {% trans "Candidate List" %}
        <span class="badge bg-primary-theme ms-2">{{ candidates|length }} / {{ total_candidates }} Total</span>
        <small class="text-muted fw-normal ms-2">(Sorted by AI Score)</small>
    </h2>

    <div class="kaauh-card shadow-sm p-3">
        {% if candidates %}
        <div class="bulk-action-bar">
            <form hx-boost="true" hx-include="#candidate-form" action="{% url 'candidate_update_status' job.slug %}" method="post" class="action-group">
                {% csrf_token %}
                <label for="update_status" class="form-label small mb-0 fw-bold">{% trans "Move Selected To:" %}</label>
                <select name="mark_as" id="update_status" class="form-select form-select-sm" style="width: auto;">
                        <option selected>
                            ----------
                        </option>
                        <option value="Interview">
                            {% trans "Interview Stage" %}
                        </option>
                    <option value="Applied">
                        {% trans "Screening Stage" %}
                    </option>
                </select>
                <button type="submit" class="btn btn-main-action btn-sm">
                    <i class="fas fa-arrow-right me-1"></i>
                </button>
            </form>
        </div>
        {% endif %}
        <div class="table-responsive">
            <form id="candidate-form" method="post">
                {% csrf_token %}
                <table class="table candidate-table align-middle">
                    <thead>
                        <tr>
                            <th style="width: 2%;">
                                {% if candidates %}
                                    <div class="form-check">
                                        <input
                                        type="checkbox" class="form-check-input" id="selectAllCheckbox">
                                    </div>
                                {% endif %}
                            </th>
                            <th style="width: 15%;">{% trans "Name" %}</th>
                            <th style="width: 15%;">{% trans "Contact" %}</th>
                            <th style="width: 10%;" class="text-center">{% trans "AI Score" %}</th>
                            <th style="width: 15%;">{% trans "Exam Date" %}</th>
                            <th style="width: 10%;" class="text-center">{% trans "Exam Results" %}</th>
                            <th style="width: 15%;">{% trans "Actions" %}</th>
                        </tr>
                    </thead>
                    <tbody>
                        {% for candidate in candidates %}
                            <tr>
                                <td>
                                    <div class="form-check">
                                    <input
                                    name="candidate_ids"
                                    value="{{ candidate.id }}"
                                    type="checkbox" class="form-check-input rowCheckbox" id="candidate-{{ candidate.id }}">
                                </div>
                                </td>
                                <td>
                                    <div class="candidate-name">
                                        {{ candidate.name }}
                                    </div>
                                </td>
                                <td>
                                    <div class="candidate-details">
                                        <i class="fas fa-envelope me-1"></i> {{ candidate.email }}<br>
                                        <i class="fas fa-phone me-1"></i> {{ candidate.phone }}
                                    </div>
                                </td>
                                <td class="text-center">
                                    <span class="badge ai-score-badge">{{ candidate.match_score|default:"0" }}%</span>
                                </td>
                                <td>
                                    {{candidate.exam_date|date:"d-m-Y h:i A"|default:"--"}}
                                </td>

                                <td class="text-center">
                                {% if not candidate.exam_status %}
                                    <button type="button" class="btn btn-warning btn-sm"
                                        data-bs-toggle="modal"
                                        data-bs-target="#candidateviewModal"
                                        hx-get="{% url 'update_candidate_status' job.slug candidate.slug 'exam' 'passed' %}"
                                        hx-target="#candidateviewModalBody"
                                        title="Pass Exam">
                                        <i class="fas fa-plus"></i>
                                    </button>
                                {% else %}
                                    {% if candidate.exam_status == "Passed" %}
                                    <span class="status-badge bg-success">{{ candidate.exam_status }}</span>
                                    {% elif candidate.exam_status == "Failed" %}
                                    <span class="status-badge bg-danger">{{ candidate.exam_status }}</span>
                                    {% else %}
                                    --
                                    {% endif %}
                                {% endif %}
                            </td>

                                <td >
                                    <button type="button" class="btn btn-outline-secondary btn-sm"
                                        data-bs-toggle="modal"
                                        data-bs-target="#candidateviewModal"
                                        hx-get="{% url 'candidate_criteria_view_htmx' candidate.pk %}"
                                        hx-target="#candidateviewModalBody"
                                        title="View Profile">
                                        <i class="fas fa-eye"></i>
                                    </button>
                                </td>
                            </tr>
                        {% endfor %}
                    </tbody>
                </table>
                {% if not candidates %}
                    <div class="alert alert-info text-center mt-3 mb-0" role="alert">
                        <i class="fas fa-info-circle me-1"></i>
                        {% trans "No candidates are currently in the Exam stage for this job." %}
                    </div>
                {% endif %}
            </form>
        </div>
    </div>
</div>

<div class="modal fade modal-lg" id="candidateviewModal" tabindex="-1" aria-labelledby="candidateviewModalLabel" aria-hidden="true">
    <div class="modal-dialog">
        <div class="modal-content kaauh-card">
            <div class="modal-header" style="border-bottom: 1px solid var(--kaauh-border);">
                <h5 class="modal-title" id="candidateviewModalLabel" style="color: var(--kaauh-teal-dark);">
                    {% trans "Candidate Details & Exam Update" %}
                </h5>
                <button type="button" class="btn-close" data-bs-dismiss="modal" aria-label="Close"></button>
            </div>
            <div id="candidateviewModalBody" class="modal-body">
                <div class="text-center py-5 text-muted">
                    <i class="fas fa-spinner fa-spin fa-2x"></i><br>
                    {% trans "Loading candidate data..." %}
                </div>
            </div>
            <div class="modal-footer" style="border-top: 1px solid var(--kaauh-border);">
                <button type="button" class="btn btn-outline-secondary" data-bs-dismiss="modal">
                    {% trans "Close" %}
                </button>
            </div>
        </div>
    </div>
</div>
{% endblock %}


{% block customJS %}
<script>
    document.addEventListener('DOMContentLoaded', function () {
        const selectAllCheckbox = document.getElementById('selectAllCheckbox');
        const rowCheckboxes = document.querySelectorAll('.rowCheckbox');

        if (selectAllCheckbox) {

            // Function to safely update the header checkbox state
            function updateSelectAllState() {
                const checkedCount = Array.from(rowCheckboxes).filter(cb => cb.checked).length;
                const totalCount = rowCheckboxes.length;

                if (checkedCount === 0) {
                    selectAllCheckbox.checked = false;
                    selectAllCheckbox.indeterminate = false;
                } else if (checkedCount === totalCount) {
                    selectAllCheckbox.checked = true;
                    selectAllCheckbox.indeterminate = false;
                } else {
                    // Set to indeterminate state (partially checked)
                    selectAllCheckbox.checked = false;
                    selectAllCheckbox.indeterminate = true;
                }
            }

            // 1. Logic for the 'Select All' checkbox (Clicking it updates all rows)
            selectAllCheckbox.addEventListener('change', function () {
                const isChecked = selectAllCheckbox.checked;

                rowCheckboxes.forEach(checkbox => checkbox.removeEventListener('change', updateSelectAllState));

                rowCheckboxes.forEach(function (checkbox) {
                    checkbox.checked = isChecked;
                    checkbox.dispatchEvent(new Event('change', { bubbles: true }));
                });

                rowCheckboxes.forEach(checkbox => checkbox.addEventListener('change', updateSelectAllState));
                updateSelectAllState();
            });

            // 2. Logic to update 'Select All' state based on row checkboxes
            rowCheckboxes.forEach(function (checkbox) {
                checkbox.addEventListener('change', updateSelectAllState);
            });

            // Initial check to set the correct state on load (in case items are pre-checked)
            updateSelectAllState();
        }
    });
</script>
{% endblock %}