{% extends "base.html" %}

{% block title %}{{ location.name }} - Monitoring Location{% endblock %}

{% block content %}
<!-- Breadcrumb Navigation -->
<div class="mb-6">
    <nav class="flex items-center space-x-2 text-sm">
        <a href="/projects" class="text-seismo-orange hover:text-seismo-navy flex items-center">
            <svg class="w-4 h-4 mr-1" fill="none" stroke="currentColor" viewBox="0 0 24 24">
                <path stroke-linecap="round" stroke-linejoin="round" stroke-width="2" d="M15 19l-7-7 7-7"></path>
            </svg>
            Projects
        </a>
        <svg class="w-4 h-4 text-gray-400" fill="none" stroke="currentColor" viewBox="0 0 24 24">
            <path stroke-linecap="round" stroke-linejoin="round" stroke-width="2" d="M9 5l7 7-7 7"></path>
        </svg>
        <a href="/projects/{{ project_id }}" class="text-seismo-orange hover:text-seismo-navy">
            {{ project.name }}
        </a>
        <svg class="w-4 h-4 text-gray-400" fill="none" stroke="currentColor" viewBox="0 0 24 24">
            <path stroke-linecap="round" stroke-linejoin="round" stroke-width="2" d="M9 5l7 7-7 7"></path>
        </svg>
        <span class="text-gray-900 dark:text-white font-medium">{{ location.name }}</span>
    </nav>
</div>

<!-- Header -->
<div class="mb-8">
    <div class="flex justify-between items-start">
        <div>
            <h1 class="text-3xl font-bold text-gray-900 dark:text-white flex items-center">
                <svg class="w-8 h-8 mr-3 text-seismo-orange" fill="none" stroke="currentColor" viewBox="0 0 24 24">
                    <path stroke-linecap="round" stroke-linejoin="round" stroke-width="2" d="M17.657 16.657L13.414 20.9a1.998 1.998 0 01-2.827 0l-4.244-4.243a8 8 0 1111.314 0z"></path>
                    <path stroke-linecap="round" stroke-linejoin="round" stroke-width="2" d="M15 11a3 3 0 11-6 0 3 3 0 016 0z"></path>
                </svg>
                {{ location.name }}
            </h1>
            <p class="text-gray-600 dark:text-gray-400 mt-1">
                Monitoring Location &bull; {{ project.name }}
            </p>
        </div>
        <div class="flex gap-2">
            {% if assigned_unit %}
                <span class="px-3 py-1 rounded-full text-sm font-medium bg-green-100 text-green-800 dark:bg-green-900/30 dark:text-green-300">
                    <svg class="w-4 h-4 inline mr-1" fill="none" stroke="currentColor" viewBox="0 0 24 24">
                        <path stroke-linecap="round" stroke-linejoin="round" stroke-width="2" d="M5 13l4 4L19 7"></path>
                    </svg>
                    Unit Assigned
                </span>
            {% else %}
                <span class="px-3 py-1 rounded-full text-sm font-medium bg-amber-100 text-amber-800 dark:bg-amber-900/30 dark:text-amber-300">
                    No Unit Assigned
                </span>
            {% endif %}
        </div>
    </div>
</div>

<!-- Tab Navigation -->
<div class="mb-6 border-b border-gray-200 dark:border-gray-700">
    <nav class="flex space-x-6">
        <button onclick="switchTab('overview')"
                data-tab="overview"
                class="tab-button px-4 py-3 border-b-2 font-medium text-sm transition-colors border-seismo-orange text-seismo-orange">
            Overview
        </button>
        <button onclick="switchTab('settings')"
                data-tab="settings"
                class="tab-button px-4 py-3 border-b-2 border-transparent font-medium text-sm text-gray-600 dark:text-gray-400 hover:text-gray-900 dark:hover:text-white hover:border-gray-300 dark:hover:border-gray-600 transition-colors">
            Settings
        </button>
    </nav>
</div>

<!-- Tab Content -->
<div id="tab-content">
    <!-- Overview Tab -->
    <div id="overview-tab" class="tab-panel">
        <div class="grid grid-cols-1 lg:grid-cols-2 gap-6">
            <!-- Location Details Card -->
            <div class="bg-white dark:bg-slate-800 rounded-xl shadow-lg p-6">
                <h2 class="text-xl font-semibold text-gray-900 dark:text-white mb-4">Location Details</h2>
                <div class="space-y-4">
                    <div>
                        <div class="text-sm text-gray-600 dark:text-gray-400">Name</div>
                        <div class="text-lg font-medium text-gray-900 dark:text-white">{{ location.name }}</div>
                    </div>
                    {% if location.description %}
                    <div>
                        <div class="text-sm text-gray-600 dark:text-gray-400">Description</div>
                        <div class="text-gray-900 dark:text-white">{{ location.description }}</div>
                    </div>
                    {% endif %}
                    {% if location.address %}
                    <div>
                        <div class="text-sm text-gray-600 dark:text-gray-400">Address</div>
                        <div class="text-gray-900 dark:text-white">{{ location.address }}</div>
                    </div>
                    {% endif %}
                    {% if location.coordinates %}
                    <div>
                        <div class="text-sm text-gray-600 dark:text-gray-400">Coordinates</div>
                        <div class="text-gray-900 dark:text-white font-mono text-sm">{{ location.coordinates }}</div>
                    </div>
                    {% endif %}
                    <div>
                        <div class="text-sm text-gray-600 dark:text-gray-400">Created</div>
                        <div class="text-gray-900 dark:text-white">{{ location.created_at|local_datetime if location.created_at else 'N/A' }}</div>
                    </div>
                </div>
            </div>

            <!-- Assignment Card -->
            <div class="bg-white dark:bg-slate-800 rounded-xl shadow-lg p-6">
                <h2 class="text-xl font-semibold text-gray-900 dark:text-white mb-4">Unit Assignment</h2>
                {% if assigned_unit %}
                <div class="space-y-4">
                    <!-- Seismograph row -->
                    <div>
                        <div class="text-sm text-gray-600 dark:text-gray-400">Seismograph</div>
                        <div class="text-lg font-medium text-gray-900 dark:text-white">
                            <a href="/unit/{{ assigned_unit.id }}" class="text-seismo-orange hover:text-seismo-navy">
                                {{ assigned_unit.id }}
                            </a>
                        </div>
                        {% if assigned_unit.unit_type %}
                        <div class="text-xs text-gray-500 dark:text-gray-400 mt-0.5">{{ assigned_unit.unit_type }}</div>
                        {% endif %}
                    </div>
                    <!-- Modem row -->
                    <div>
                        <div class="text-sm text-gray-600 dark:text-gray-400">Modem</div>
                        {% if assigned_modem %}
                        <div class="text-lg font-medium text-gray-900 dark:text-white">
                            <a href="/unit/{{ assigned_modem.id }}" class="text-seismo-orange hover:text-seismo-navy">
                                {{ assigned_modem.id }}
                            </a>
                        </div>
                        {% if assigned_modem.hardware_model or assigned_modem.ip_address %}
                        <div class="text-xs text-gray-500 dark:text-gray-400 mt-0.5">
                            {{ assigned_modem.hardware_model or '' }}{% if assigned_modem.hardware_model and assigned_modem.ip_address %} &bull; {% endif %}{{ assigned_modem.ip_address or '' }}
                        </div>
                        {% endif %}
                        {% else %}
                        <div class="text-sm text-gray-400 dark:text-gray-500 italic">No modem paired</div>
                        {% endif %}
                    </div>
                    {% if assignment %}
                    <div>
                        <div class="text-sm text-gray-600 dark:text-gray-400">Assigned Since</div>
                        <div class="text-gray-900 dark:text-white">{{ assignment.assigned_at|local_datetime if assignment.assigned_at else 'N/A' }}</div>
                    </div>
                    {% if assignment.notes %}
                    <div>
                        <div class="text-sm text-gray-600 dark:text-gray-400">Notes</div>
                        <div class="text-gray-900 dark:text-white text-sm">{{ assignment.notes }}</div>
                    </div>
                    {% endif %}
                    {% endif %}
                    <div class="pt-2 flex gap-2 flex-wrap">
                        <button onclick="openSwapModal()"
                                class="px-4 py-2 bg-seismo-orange text-white rounded-lg hover:bg-seismo-navy transition-colors text-sm">
                            Swap Unit / Modem
                        </button>
                        <button onclick="unassignUnit('{{ assignment.id }}')"
                                class="px-4 py-2 bg-amber-100 text-amber-800 dark:bg-amber-900/30 dark:text-amber-300 rounded-lg hover:bg-amber-200 dark:hover:bg-amber-900/50 transition-colors text-sm">
                            Unassign
                        </button>
                    </div>
                </div>
                {% else %}
                <div class="text-center py-8">
                    <svg class="w-16 h-16 mx-auto mb-4 text-gray-400" fill="none" stroke="currentColor" viewBox="0 0 24 24">
                        <path stroke-linecap="round" stroke-linejoin="round" stroke-width="2" d="M20 13V6a2 2 0 00-2-2H6a2 2 0 00-2 2v7m16 0v5a2 2 0 01-2 2H6a2 2 0 01-2-2v-5m16 0h-2.586a1 1 0 00-.707.293l-2.414 2.414a1 1 0 01-.707.293h-3.172a1 1 0 01-.707-.293l-2.414-2.414A1 1 0 006.586 13H4"></path>
                    </svg>
                    <p class="text-gray-500 dark:text-gray-400 mb-4">No unit currently assigned</p>
                    <button onclick="openSwapModal()"
                            class="px-4 py-2 bg-seismo-orange text-white rounded-lg hover:bg-seismo-navy transition-colors">
                        Assign a Unit
                    </button>
                </div>
                {% endif %}
            </div>
        </div>
    </div>

    <!-- Settings Tab -->
    <div id="settings-tab" class="tab-panel hidden">
        <div class="bg-white dark:bg-slate-800 rounded-xl shadow-lg p-6">
            <h2 class="text-xl font-semibold text-gray-900 dark:text-white mb-6">Location Settings</h2>

            <form id="location-settings-form" class="space-y-6">
                <div>
                    <label class="block text-sm font-medium text-gray-700 dark:text-gray-300 mb-2">Name</label>
                    <input type="text" id="settings-name" value="{{ location.name }}"
                           class="w-full px-4 py-2 border border-gray-300 dark:border-gray-600 rounded-lg bg-white dark:bg-gray-700 text-gray-900 dark:text-white" required>
                </div>

                <div>
                    <label class="block text-sm font-medium text-gray-700 dark:text-gray-300 mb-2">Description</label>
                    <textarea id="settings-description" rows="3"
                              class="w-full px-4 py-2 border border-gray-300 dark:border-gray-600 rounded-lg bg-white dark:bg-gray-700 text-gray-900 dark:text-white">{{ location.description or '' }}</textarea>
                </div>

                <div>
                    <label class="block text-sm font-medium text-gray-700 dark:text-gray-300 mb-2">Address</label>
                    <input type="text" id="settings-address" value="{{ location.address or '' }}"
                           class="w-full px-4 py-2 border border-gray-300 dark:border-gray-600 rounded-lg bg-white dark:bg-gray-700 text-gray-900 dark:text-white">
                </div>

                <div>
                    <label class="block text-sm font-medium text-gray-700 dark:text-gray-300 mb-2">Coordinates</label>
                    <input type="text" id="settings-coordinates" value="{{ location.coordinates or '' }}"
                           placeholder="40.7128,-74.0060"
                           class="w-full px-4 py-2 border border-gray-300 dark:border-gray-600 rounded-lg bg-white dark:bg-gray-700 text-gray-900 dark:text-white">
                    <p class="text-xs text-gray-500 mt-1">Format: latitude,longitude</p>
                </div>

                <div id="settings-error" class="hidden text-sm text-red-600"></div>

                <div class="flex justify-end gap-3 pt-2">
                    <button type="button" onclick="window.location.href='/projects/{{ project_id }}'"
                            class="px-6 py-2 border border-gray-300 dark:border-gray-600 rounded-lg text-gray-700 dark:text-gray-300 hover:bg-gray-50 dark:hover:bg-gray-700">
                        Cancel
                    </button>
                    <button type="submit"
                            class="px-6 py-2 bg-seismo-orange hover:bg-seismo-navy text-white rounded-lg font-medium">
                        Save Changes
                    </button>
                </div>
            </form>
        </div>
    </div>
</div>

<!-- Assign / Swap Modal -->
<div id="swap-modal" class="hidden fixed inset-0 bg-black bg-opacity-50 z-50 flex items-center justify-center">
    <div class="bg-white dark:bg-slate-800 rounded-xl shadow-2xl w-full max-w-2xl max-h-[90vh] overflow-y-auto m-4">
        <div class="p-6 border-b border-gray-200 dark:border-gray-700 flex items-center justify-between">
            <div>
                <h2 id="swap-modal-title" class="text-2xl font-bold text-gray-900 dark:text-white">Assign Unit</h2>
                <p class="text-gray-600 dark:text-gray-400 mt-1">Select a seismograph and optionally a modem for this location</p>
            </div>
            <button onclick="closeSwapModal()" class="text-gray-500 hover:text-gray-700 dark:text-gray-400 dark:hover:text-gray-200">
                <svg class="w-6 h-6" fill="none" stroke="currentColor" viewBox="0 0 24 24">
                    <path stroke-linecap="round" stroke-linejoin="round" stroke-width="2" d="M6 18L18 6M6 6l12 12"></path>
                </svg>
            </button>
        </div>

        <form id="swap-form" class="p-6 space-y-4">
            <div>
                <label class="block text-sm font-medium text-gray-700 dark:text-gray-300 mb-2">Seismograph <span class="text-red-500">*</span></label>
                <select id="swap-unit-id" name="unit_id"
                        class="w-full px-4 py-2 border border-gray-300 dark:border-gray-600 rounded-lg bg-white dark:bg-gray-700 text-gray-900 dark:text-white" required>
                    <option value="">Loading units...</option>
                </select>
                <p id="swap-units-empty" class="hidden text-xs text-gray-500 mt-1">No available seismographs.</p>
            </div>

            <div>
                <label class="block text-sm font-medium text-gray-700 dark:text-gray-300 mb-2">Modem <span class="text-xs text-gray-400">(optional)</span></label>
                <select id="swap-modem-id" name="modem_id"
                        class="w-full px-4 py-2 border border-gray-300 dark:border-gray-600 rounded-lg bg-white dark:bg-gray-700 text-gray-900 dark:text-white">
                    <option value="">No modem</option>
                </select>
            </div>

            <div>
                <label class="block text-sm font-medium text-gray-700 dark:text-gray-300 mb-2">Notes</label>
                <textarea id="swap-notes" name="notes" rows="2"
                          class="w-full px-4 py-2 border border-gray-300 dark:border-gray-600 rounded-lg bg-white dark:bg-gray-700 text-gray-900 dark:text-white"></textarea>
            </div>

            <div id="swap-error" class="hidden text-sm text-red-600"></div>

            <div class="flex justify-end gap-3 pt-2">
                <button type="button" onclick="closeSwapModal()"
                        class="px-6 py-2 border border-gray-300 dark:border-gray-600 rounded-lg text-gray-700 dark:text-gray-300 hover:bg-gray-50 dark:hover:bg-gray-700">
                    Cancel
                </button>
                <button type="submit" id="swap-submit-btn"
                        class="px-6 py-2 bg-seismo-orange hover:bg-seismo-navy text-white rounded-lg font-medium">
                    Assign
                </button>
            </div>
        </form>
    </div>
</div>

<script>
const projectId = "{{ project_id }}";
const locationId = "{{ location_id }}";
const hasAssignment = {{ 'true' if assigned_unit else 'false' }};

// Tab switching
function switchTab(tabName) {
    document.querySelectorAll('.tab-panel').forEach(panel => {
        panel.classList.add('hidden');
    });
    document.querySelectorAll('.tab-button').forEach(button => {
        button.classList.remove('border-seismo-orange', 'text-seismo-orange');
        button.classList.add('border-transparent', 'text-gray-600', 'dark:text-gray-400');
    });
    const panel = document.getElementById(`${tabName}-tab`);
    if (panel) panel.classList.remove('hidden');
    const button = document.querySelector(`[data-tab="${tabName}"]`);
    if (button) {
        button.classList.remove('border-transparent', 'text-gray-600', 'dark:text-gray-400');
        button.classList.add('border-seismo-orange', 'text-seismo-orange');
    }
}

// Location settings form submission
document.getElementById('location-settings-form').addEventListener('submit', async function(e) {
    e.preventDefault();

    const payload = {
        name: document.getElementById('settings-name').value.trim(),
        description: document.getElementById('settings-description').value.trim() || null,
        address: document.getElementById('settings-address').value.trim() || null,
        coordinates: document.getElementById('settings-coordinates').value.trim() || null,
    };

    try {
        const response = await fetch(`/api/projects/${projectId}/locations/${locationId}`, {
            method: 'PUT',
            headers: {'Content-Type': 'application/json'},
            body: JSON.stringify(payload)
        });

        if (!response.ok) {
            const data = await response.json().catch(() => ({}));
            throw new Error(data.detail || 'Failed to update location');
        }

        window.location.reload();
    } catch (err) {
        const errorEl = document.getElementById('settings-error');
        errorEl.textContent = err.message || 'Failed to update location.';
        errorEl.classList.remove('hidden');
    }
});

// Swap / Assign modal
async function openSwapModal() {
    document.getElementById('swap-modal').classList.remove('hidden');
    document.getElementById('swap-modal-title').textContent = hasAssignment ? 'Swap Unit / Modem' : 'Assign Unit';
    document.getElementById('swap-submit-btn').textContent = hasAssignment ? 'Swap' : 'Assign';
    document.getElementById('swap-error').classList.add('hidden');
    document.getElementById('swap-notes').value = '';
    await Promise.all([loadSwapUnits(), loadSwapModems()]);
}

function closeSwapModal() {
    document.getElementById('swap-modal').classList.add('hidden');
}

async function loadSwapUnits() {
    try {
        const response = await fetch(`/api/projects/${projectId}/available-units?location_type=vibration`);
        if (!response.ok) throw new Error('Failed to load units');
        const data = await response.json();
        const select = document.getElementById('swap-unit-id');
        select.innerHTML = '<option value="">Select a seismograph</option>';

        if (!data.length) {
            document.getElementById('swap-units-empty').classList.remove('hidden');
        } else {
            document.getElementById('swap-units-empty').classList.add('hidden');
        }

        data.forEach(unit => {
            const option = document.createElement('option');
            option.value = unit.id;
            option.textContent = unit.id + (unit.model ? ` \u2022 ${unit.model}` : '') + (unit.location ? ` \u2014 ${unit.location}` : '');
            select.appendChild(option);
        });
    } catch (err) {
        document.getElementById('swap-error').textContent = 'Failed to load seismographs.';
        document.getElementById('swap-error').classList.remove('hidden');
    }
}

async function loadSwapModems() {
    try {
        const response = await fetch(`/api/projects/${projectId}/available-modems`);
        if (!response.ok) throw new Error('Failed to load modems');
        const data = await response.json();
        const select = document.getElementById('swap-modem-id');
        select.innerHTML = '<option value="">No modem</option>';

        data.forEach(modem => {
            const option = document.createElement('option');
            option.value = modem.id;
            let label = modem.id;
            if (modem.hardware_model) label += ` \u2022 ${modem.hardware_model}`;
            if (modem.ip_address) label += ` \u2014 ${modem.ip_address}`;
            option.textContent = label;
            select.appendChild(option);
        });
    } catch (err) {
        // Modem list failure is non-fatal — just leave blank
        console.warn('Failed to load modems:', err);
    }
}

document.getElementById('swap-form').addEventListener('submit', async function(e) {
    e.preventDefault();

    const unitId = document.getElementById('swap-unit-id').value;
    const modemId = document.getElementById('swap-modem-id').value;
    const notes = document.getElementById('swap-notes').value.trim();

    if (!unitId) {
        document.getElementById('swap-error').textContent = 'Please select a seismograph.';
        document.getElementById('swap-error').classList.remove('hidden');
        return;
    }

    try {
        const formData = new FormData();
        formData.append('unit_id', unitId);
        if (modemId) formData.append('modem_id', modemId);
        if (notes) formData.append('notes', notes);

        const response = await fetch(`/api/projects/${projectId}/locations/${locationId}/swap`, {
            method: 'POST',
            body: formData
        });

        if (!response.ok) {
            const data = await response.json().catch(() => ({}));
            throw new Error(data.detail || 'Failed to assign unit');
        }

        window.location.reload();
    } catch (err) {
        document.getElementById('swap-error').textContent = err.message || 'Failed to assign unit.';
        document.getElementById('swap-error').classList.remove('hidden');
    }
});

async function unassignUnit(assignmentId) {
    if (!confirm('Unassign this unit from the location?')) return;

    try {
        const response = await fetch(`/api/projects/${projectId}/assignments/${assignmentId}/unassign`, {
            method: 'POST'
        });

        if (!response.ok) {
            const data = await response.json().catch(() => ({}));
            throw new Error(data.detail || 'Failed to unassign unit');
        }

        window.location.reload();
    } catch (err) {
        alert(err.message || 'Failed to unassign unit.');
    }
}

document.addEventListener('keydown', function(e) {
    if (e.key === 'Escape') closeSwapModal();
});

document.getElementById('swap-modal')?.addEventListener('click', function(e) {
    if (e.target === this) closeSwapModal();
});
</script>
{% endblock %}