/*
 * The MIT License (MIT)
 *
 * Copyright (c) 2017 Minecrell <https://github.com/Minecrell>
 *
 * Permission is hereby granted, free of charge, to any person obtaining a copy
 * of this software and associated documentation files (the "Software"), to deal
 * in the Software without restriction, including without limitation the rights
 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
 * copies of the Software, and to permit persons to whom the Software is
 * furnished to do so, subject to the following conditions:
 *
 * The above copyright notice and this permission notice shall be included in
 * all copies or substantial portions of the Software.
 *
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
 * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
 * THE SOFTWARE.
 */

package net.minecrell.pluginyml

import com.fasterxml.jackson.annotation.JsonInclude
import com.fasterxml.jackson.databind.ObjectMapper
import com.fasterxml.jackson.databind.module.SimpleModule
import com.fasterxml.jackson.databind.ser.std.StdDelegatingSerializer
import com.fasterxml.jackson.databind.util.Converter
import com.fasterxml.jackson.databind.util.StdConverter
import com.fasterxml.jackson.dataformat.yaml.YAMLFactory
import com.fasterxml.jackson.dataformat.yaml.YAMLGenerator
import com.fasterxml.jackson.module.kotlin.registerKotlinModule
import org.gradle.api.DefaultTask
import org.gradle.api.NamedDomainObjectCollection
import org.gradle.api.file.DirectoryProperty
import org.gradle.api.provider.Property
import org.gradle.api.tasks.Input
import org.gradle.api.tasks.Nested
import org.gradle.api.tasks.OutputDirectory
import org.gradle.api.tasks.TaskAction
import org.gradle.kotlin.dsl.property

open class GeneratePluginDescription : DefaultTask() {

    @Input
    val fileName: Property<String> = project.objects.property()

    @Nested
    val pluginDescription: Property<PluginDescription> = project.objects.property()

    @OutputDirectory
    val outputDirectory: DirectoryProperty = project.objects.directoryProperty()

    @TaskAction
    fun generate() {
        val factory = YAMLFactory()
            .disable(YAMLGenerator.Feature.WRITE_DOC_START_MARKER)
            .enable(YAMLGenerator.Feature.MINIMIZE_QUOTES)
            .enable(YAMLGenerator.Feature.INDENT_ARRAYS)

        val module = SimpleModule()
        @Suppress("UNCHECKED_CAST") // Too stupid to figure out the generics here...
        module.addSerializer(StdDelegatingSerializer(NamedDomainObjectCollection::class.java,
            NamedDomainObjectCollectionConverter as Converter<NamedDomainObjectCollection<*>, *>))

        val mapper = ObjectMapper(factory)
            .registerKotlinModule()
            .registerModule(module)
            .setSerializationInclusion(JsonInclude.Include.NON_EMPTY)

        mapper.writeValue(outputDirectory.file(fileName).get().asFile, pluginDescription.get())
    }

    object NamedDomainObjectCollectionConverter : StdConverter<NamedDomainObjectCollection<Any>, Map<String, Any>>()  {
        override fun convert(value: NamedDomainObjectCollection<Any>): Map<String, Any> {
            val namer = value.namer
            return value.associateBy { namer.determineName(it) }
        }
    }

}