<%
  const type = locals.type;
  const layoutProperties = locals.layoutProperties;
  const paintProperties = locals.paintProperties;
  const containsEnumerationProperties = locals.containsEnumerationProperties;
-%>
// This file is generated. 
// Edit platform/darwin/scripts/generate-style-code.js, then run `make style-code-darwin`.

#import "MGLSource.h"
#import "MGLMapView_Private.h"
#import "NSPredicate+MGLAdditions.h"
#import "MGLStyleLayer_Private.h"
#import "MGLStyleValue_Private.h"
#import "MGL<%- camelize(type) %>StyleLayer.h"

#include <mbgl/style/layers/<%- type %>_layer.hpp>
<% if (containsEnumerationProperties)  { -%>
namespace mbgl {

<% if (layoutProperties.length) { -%>
<% for (const property of layoutProperties) { -%>
<% if (property.type == "enum") { -%>
    MBGL_DEFINE_ENUM(MGL<%- camelize(originalPropertyName(property)) %>, {
<% for (const value in property.values) { -%>
        { MGL<%- camelize(originalPropertyName(property)) %><%- camelize(value) %>, "<%-value%>" },
<% } -%>
    });

<% } -%>
<% } -%>
<% } -%>
<% if (paintProperties.length) { -%>
<% for (const property of paintProperties) { -%>
<% if (property.type == "enum") { -%>
    MBGL_DEFINE_ENUM(MGL<%- camelize(originalPropertyName(property)) %>, {
<% for (const value in property.values) { -%>
        { MGL<%- camelize(originalPropertyName(property)) %><%- camelize(value) %>, "<%-value%>" },
<% } -%>
    });

<% } -%>
<% } -%>
<% } -%>
}
<% } -%>

@interface MGL<%- camelize(type) %>StyleLayer ()

@property (nonatomic) mbgl::style::<%- camelize(type) %>Layer *rawLayer;

@end

@implementation MGL<%- camelize(type) %>StyleLayer
{
    std::unique_ptr<mbgl::style::<%- camelize(type) %>Layer> _pendingLayer;
}

<% if (type == 'background') { -%>
- (instancetype)initWithIdentifier:(NSString *)identifier
{
    if (self = [super initWithIdentifier:identifier]) {
        auto layer = std::make_unique<mbgl::style::<%- camelize(type) %>Layer>(identifier.UTF8String);
        _pendingLayer = std::move(layer);
        _rawLayer = _pendingLayer.get();
    }
    return self;
}

<% } else { -%>
- (instancetype)initWithIdentifier:(NSString *)identifier source:(MGLSource *)source
{
    if (self = [super initWithIdentifier:identifier source:source]) {
        auto layer = std::make_unique<mbgl::style::<%- camelize(type) %>Layer>(identifier.UTF8String, source.identifier.UTF8String);
        _pendingLayer = std::move(layer);
        _rawLayer = _pendingLayer.get();
    }
    return self;
}
<% } -%>
<% if (type !== 'background' && type !== 'raster') { -%>
- (NSString *)sourceLayerIdentifier
{
    MGLAssertStyleLayerIsValid();

    auto layerID = _rawLayer->getSourceLayer();
    return layerID.empty() ? nil : @(layerID.c_str());
}

- (void)setSourceLayerIdentifier:(NSString *)sourceLayerIdentifier
{
    MGLAssertStyleLayerIsValid();

    _rawLayer->setSourceLayer(sourceLayerIdentifier.UTF8String ?: "");
}

- (void)setPredicate:(NSPredicate *)predicate
{
    MGLAssertStyleLayerIsValid();

    _rawLayer->setFilter(predicate.mgl_filter);
}

- (NSPredicate *)predicate
{
    MGLAssertStyleLayerIsValid();

    return [NSPredicate mgl_predicateWithFilter:_rawLayer->getFilter()];
}
<% } -%>
#pragma mark -  Adding to and removing from a map view

- (void)addToMapView:(MGLMapView *)mapView belowLayer:(MGLStyleLayer *)otherLayer
{
    if (_pendingLayer == nullptr) {
        [NSException raise:@"MGLRedundantLayerException"
            format:@"This instance %@ was already added to %@. Adding the same layer instance " \
                    "to the style more than once is invalid.", self, mapView.style];
    }

    if (otherLayer) {
        const mbgl::optional<std::string> belowLayerId{otherLayer.identifier.UTF8String};
        mapView.mbglMap->addLayer(std::move(_pendingLayer), belowLayerId);
    } else {
        mapView.mbglMap->addLayer(std::move(_pendingLayer));
    }
}

- (void)removeFromMapView:(MGLMapView *)mapView
{
    _pendingLayer = nullptr;
    _rawLayer = nullptr;

    auto removedLayer = mapView.mbglMap->removeLayer(self.identifier.UTF8String);
    if (!removedLayer) {
        return;
    }

    mbgl::style::<%- camelize(type) %>Layer *layer = dynamic_cast<mbgl::style::<%- camelize(type) %>Layer *>(removedLayer.get());
    if (!layer) {
        return;
    }

    removedLayer.release();

    _pendingLayer = std::unique_ptr<mbgl::style::<%- camelize(type) %>Layer>(layer);
    _rawLayer = _pendingLayer.get();
}

<% if (layoutProperties.length) { -%>
#pragma mark - Accessing the Layout Attributes

<% for (const property of layoutProperties) { -%>
- (void)set<%- camelize(property.name) %>:(MGLStyleValue<<%- propertyType(property, true) %>> *)<%- objCName(property) %> {
    MGLAssertStyleLayerIsValid();

<% if (property.type == "enum") { -%>
    auto mbglValue = MGLStyleValueTransformer<mbgl::style::<%- mbglType(property) %>, NSValue *, mbgl::style::<%- mbglType(property) %>, MGL<%- camelize(originalPropertyName(property)) %>>().toEnumPropertyValue(<%- objCName(property) %>);
    _rawLayer->set<%- camelize(originalPropertyName(property)) %>(mbglValue);
<% } else { -%>
    auto mbglValue = MGLStyleValueTransformer<<%- valueTransformerArguments(property).join(', ') %>>().toPropertyValue(<%- objCName(property) %>);
    _rawLayer->set<%- camelize(originalPropertyName(property)) %>(mbglValue);
<% } -%>
}

- (MGLStyleValue<<%- propertyType(property, true) %>> *)<%- objCName(property) %> {
    MGLAssertStyleLayerIsValid();

    auto propertyValue = _rawLayer->get<%- camelize(originalPropertyName(property)) %>() ?: _rawLayer->getDefault<%- camelize(originalPropertyName(property)) %>();
<% if (property.type == "enum") { -%>
    return MGLStyleValueTransformer<mbgl::style::<%- mbglType(property) %>, NSValue *, mbgl::style::<%- mbglType(property) %>, MGL<%- camelize(originalPropertyName(property)) %>>().toEnumStyleValue(propertyValue);
<% } else { -%>
    return MGLStyleValueTransformer<<%- valueTransformerArguments(property).join(', ') %>>().toStyleValue(propertyValue);
<% } -%>
}

<% } -%>
<% } -%>
<% if (paintProperties.length) { -%>
#pragma mark - Accessing the Paint Attributes

<% for (const property of paintProperties) { -%>
- (void)set<%- camelize(property.name) %>:(MGLStyleValue<<%- propertyType(property, true) %>> *)<%- objCName(property) %> {
    MGLAssertStyleLayerIsValid();

<% if (property.type == "enum") { -%>
    auto mbglValue = MGLStyleValueTransformer<mbgl::style::<%- mbglType(property) %>, NSValue *, mbgl::style::<%- mbglType(property) %>, MGL<%- camelize(originalPropertyName(property)) %>>().toEnumPropertyValue(<%- objCName(property) %>);
    _rawLayer->set<%- camelize(originalPropertyName(property)) %>(mbglValue);
<% } else { -%>
    auto mbglValue = MGLStyleValueTransformer<<%- valueTransformerArguments(property).join(', ') %>>().toPropertyValue(<%- objCName(property) %>);
    _rawLayer->set<%- camelize(originalPropertyName(property)) %>(mbglValue);
<% } -%>
}

- (MGLStyleValue<<%- propertyType(property, true) %>> *)<%- objCName(property) %> {
    MGLAssertStyleLayerIsValid();

    auto propertyValue = _rawLayer->get<%- camelize(originalPropertyName(property)) %>() ?: _rawLayer->getDefault<%- camelize(originalPropertyName(property)) %>();
<% if (property.type == "enum") { -%>
    return MGLStyleValueTransformer<mbgl::style::<%- mbglType(property) %>, NSValue *, mbgl::style::<%- mbglType(property) %>, MGL<%- camelize(originalPropertyName(property)) %>>().toEnumStyleValue(propertyValue);
<% } else { -%>
    return MGLStyleValueTransformer<<%- valueTransformerArguments(property).join(', ') %>>().toStyleValue(propertyValue);
<% } -%>
}

<% } -%>
<% } -%>

@end