io.github.kelvindev15.gradle.GeneratePackageFileTask.kt Maven / Gradle / Ivy
package io.github.kelvindev15.gradle
import com.google.gson.Gson
import com.google.gson.GsonBuilder
import com.uchuhimo.konf.Config
import com.uchuhimo.konf.OptionalItem
import io.github.kelvindev15.npm.NpmPackageFile
import io.github.kelvindev15.npm.PackageJsonSpec
import io.github.kelvindev15.npm.Repository
import org.gradle.api.DefaultTask
import org.gradle.api.provider.Property
import org.gradle.api.tasks.Input
import org.gradle.api.tasks.TaskAction
import org.gradle.kotlin.dsl.property
import java.io.File
/**
* The task to generate the package.json file.
*/
open class GeneratePackageFileTask : DefaultTask() {
private val gson: Gson = GsonBuilder().setPrettyPrinting().create()
/**
* The object representing the package.json file.
*/
@Input
val packageJson: Property = project.objects.property()
/**
* Generates the package.json file.
*/
@TaskAction
fun generatePackageFile() {
val packageJsonOptions = packageJson.get()
File(project.projectDir, "package.json").also { file ->
if (file.exists()) {
val configuration = Config {
addSpec(PackageJsonSpec)
}.from.json.file(file)
configuration[PackageJsonSpec.name] = packageJsonOptions.name
configuration[PackageJsonSpec.version] = packageJsonOptions.version
configuration[PackageJsonSpec.description] = packageJsonOptions.description
configuration[PackageJsonSpec.author] = packageJsonOptions.author
configuration[PackageJsonSpec.license] = packageJsonOptions.license
configuration[PackageJsonSpec.main] = packageJsonOptions.main
configuration[PackageJsonSpec.homepage] = packageJsonOptions.homepage
configuration[PackageJsonSpec.type] = packageJsonOptions.type
fun addToCurrent(key: OptionalItem?>, addition: Map) {
val current = configuration[key]
if (current != null) {
configuration[key] = current + addition
}
}
addToCurrent(PackageJsonSpec.scripts, packageJsonOptions.scripts.associate { it.name to it.command })
addToCurrent(
PackageJsonSpec.dependencies,
packageJsonOptions.dependencies.associate { it.name to it.version },
)
addToCurrent(
PackageJsonSpec.devDependencies,
packageJsonOptions.devDependencies.associate { it.name to it.version },
)
configuration[PackageJsonSpec.repository] = packageJsonOptions.repository?.let {
Repository(it.type, it.url)
}
listOf(
PackageJsonSpec.name,
PackageJsonSpec.version,
PackageJsonSpec.description,
PackageJsonSpec.author,
PackageJsonSpec.license,
PackageJsonSpec.main,
PackageJsonSpec.private,
PackageJsonSpec.scripts,
PackageJsonSpec.dependencies,
PackageJsonSpec.devDependencies,
PackageJsonSpec.homepage,
PackageJsonSpec.type,
PackageJsonSpec.keywords,
PackageJsonSpec.repository,
PackageJsonSpec.bugs,
).forEach { if (configuration[it] == null) configuration.unset(it) }
file.writeText("${gson.toJson(configuration.toMap())}\n", Charsets.UTF_8)
} else {
file.createNewFile()
file.writeText("${gson.toJson(packageJson.get().toMap())}\n", Charsets.UTF_8)
}
}
}
}