import com.google.gson.Gson
import org.apache.commons.codec.Charsets
import org.apache.http.HttpEntity
import org.apache.http.HttpResponse
import org.apache.http.client.HttpClient
import org.apache.http.client.config.CookieSpecs
import org.apache.http.client.config.RequestConfig
import org.apache.http.client.methods.CloseableHttpResponse
import org.apache.http.client.methods.HttpGet
import org.apache.http.client.methods.HttpPost
import org.apache.http.entity.ContentType
import org.apache.http.entity.mime.MultipartEntityBuilder
import org.apache.http.impl.client.CloseableHttpClient
import org.apache.http.impl.client.HttpClientBuilder
import org.apache.http.impl.client.HttpClients

import java.util.regex.Matcher
import java.util.regex.Pattern

buildscript {
    repositories {
        maven { url "https://plugins.gradle.org/m2/" }
        mavenCentral()
        mavenLocal()
        jcenter()
    }
    dependencies {
        classpath "org.apache.httpcomponents:httpmime:4.5.13"
        classpath "com.google.code.gson:gson:2.8.7"
        classpath "org.apache.httpcomponents:httpclient:4.5.13"
    }
}

plugins {
    id 'net.researchgate.release' version '2.8.1'
}

apply plugin: 'java'
apply plugin: 'idea'

def branch = System.getenv("GITHUB_REF");
if (branch != null) {
    branch = branch.replace('refs/heads/', '')
}
def isCanary = version.toString().contains('canary')

group = 'com.sekwah.advancedportals'

description = ""

sourceCompatibility = 1.8
targetCompatibility = 1.8

tasks.withType(JavaCompile) {
    options.encoding = 'UTF-8'
}

String getPluginData(String tag) {
    File file = file("src/main/resources/plugin.yml")
    String version = "notfound"
    file.readLines("UTF-8").each { String line ->
        line = line.trim()
        if (line.startsWith(tag)) {
            version = line.substring(tag.length() + 2, line.length())
        }
    }
    println "Advanced Portals v" + version
    return version
}

configurations {
    // configuration that holds jars to copy into lib
    includeLibs
}

repositories {
    maven { url "https://repo.maven.apache.org/maven2" }
    maven { url "https://hub.spigotmc.org/nexus/content/repositories/snapshots/" }
    maven { url "https://oss.sonatype.org/content/repositories/snapshots/" }
    maven { url "https://nexus.velocitypowered.com/repository/maven-public/" }
    maven { url 'https://papermc.io/repo/repository/maven-public/' }
}

// includeLibs just says to include the library in the final jar
dependencies {

    //implementation "org.bukkit:bukkit:1.16.1-R0.1-SNAPSHOT"
    implementation "org.spigotmc:spigot-api:1.16.1-R0.1-SNAPSHOT"
    implementation "net.md-5:bungeecord-api:1.16-R0.4"

    implementation "com.velocitypowered:velocity-api:1.1.8"
    annotationProcessor "com.velocitypowered:velocity-api:1.1.0-SNAPSHOT"

    implementation "io.netty:netty-all:4.0.4.Final"
    compileOnly 'com.destroystokyo.paper:paper-api:1.16.5-R0.1-SNAPSHOT'

    //compile fileTree(dir: 'libs', include: ['*.jar'])
}

/** For pre-releases and testers to be able to try the latest commits if they want.
 * If the builds start exceeding 8MB then we may want to upload to s3 instead and periodically clear.
 * TODO possibly add a task that announces when builds are made?
 * Though add a note that it may take a while for Curse to approve the files.
 */
task discordupload {
    dependsOn(jar)
    doLast {
        String discordWebhook = System.getenv("DISCORD_WEBHOOK")

        if (discordWebhook != null) {
            println("Logging Into Discord")

            CloseableHttpClient httpClient = HttpClients.createDefault()
            HttpPost uploadFile = new HttpPost(discordWebhook)

            MultipartEntityBuilder builder = MultipartEntityBuilder.create()

            if (isCanary) {
                builder.addTextBody("content", "New canary Build")
            } else {
                builder.addTextBody("content", "New release build\n\n" +
                        "Current Features: <${project.github}/blob/${branch}/CHANGELOG.md>")
            }

            builder.addBinaryBody("file", file(jar.archiveFile).newInputStream(), ContentType.APPLICATION_OCTET_STREAM, jar.archiveName)

            HttpEntity multipart = builder.build()

            uploadFile.setEntity(multipart)
            CloseableHttpResponse response = httpClient.execute(uploadFile)
            response.getEntity()

            println("Posted build")

        } else {
            println("Discord webhook unspecified")
        }
    }
}


String getValueFromCurseAPI(apiKey, endpoint) {
    String API_BASE_URL = 'https://minecraft.curseforge.com'

    Gson gson = new Gson()

    HttpClient client = HttpClientBuilder.create()
            .setDefaultRequestConfig(RequestConfig.custom()
                    .setCookieSpec(CookieSpecs.IGNORE_COOKIES).build()).build()

    HttpGet get = new HttpGet(API_BASE_URL + endpoint)
    get.setHeader('X-Api-Token', apiKey)

    HttpResponse response = client.execute(get)

    int statusCode = response.statusLine.statusCode

    if (statusCode == 200) {
        byte[] data = response.entity.content.bytes
        return new String(data, Charsets.UTF_8)
    } else {
        if (response.getFirstHeader('content-type').value.contains('json')) {
            InputStreamReader reader = new InputStreamReader(response.entity.content)
            reader.close()
            throw new RuntimeException("[CurseForge] Error")
        } else {
            throw new RuntimeException("[CurseForge] HTTP Error Code $response.statusLine.statusCode: $response.statusLine.reasonPhrase")
        }
    }
    return ""
}

/**
 * Upload a single file (in case you also want to upload the other files like source n stuff)
 * @param json
 * @param file
 * @return
 * @throws IOException
 * @throws URISyntaxException
 */
UploadResponse uploadFile(Metadata metadata, File file, String apiKey, Gson gson) throws IOException, URISyntaxException {
    String API_BASE_URL = 'https://minecraft.curseforge.com'
    String UPLOAD_URL = "/api/projects/%s/upload-file"
    // Upload
    // Important info
    String uploadUrl = String.format(API_BASE_URL + UPLOAD_URL, project.curse_project_id)

    HttpClient client = HttpClientBuilder.create()
            .setDefaultRequestConfig(RequestConfig.custom()
                    .setCookieSpec(CookieSpecs.IGNORE_COOKIES).build()).build()

    HttpPost post = new HttpPost(uploadUrl)
    post.setHeader('X-Api-Token', apiKey)


    // https://support.curseforge.com/en/support/solutions/articles/9000197321-curseforge-api
    post.setEntity(MultipartEntityBuilder.create()
            .addTextBody('metadata', gson.toJson(metadata), ContentType.APPLICATION_JSON)
            .addBinaryBody('file', file)
            .build())

    HttpResponse response = client.execute(post)
    InputStreamReader reader = new InputStreamReader(response.entity.content)
    UploadResponse uploadResponse = gson.fromJson(reader, UploadResponse)
    reader.close()
    return uploadResponse
}

class GameVersion {
    int id
    int gameVersionTypeID
    String name
    String slug
}

/**
 * As described here https://support.curseforge.com/en/support/solutions/articles/9000197321-curseforge-api
 */
class Metadata {
    String changelog
    String changelogType
    int[] gameVersions
    String releaseType
}

class UploadResponse {
    int id;
}


// Based on https://github.com/matthewprenger/CurseGradle as it didnt support Bukkit uploads at the time.
task curseforge {
    dependsOn(jar)
    doLast {
        String apiKey = null

        if (System.getenv("CURSE_API") != null) {
            apiKey = System.getenv("CURSE_API")
        }

        if (apiKey != null) {

            Gson gson = new Gson()

            //String VERSION_TYPES_URL = "/api/game/version-types"
            int gameVersionTypeID = 1
            String VERSION_URL = "/api/game/versions"
            println("Uploading to CurseForge")

            // Get game versions
            String gameVersionsString = getValueFromCurseAPI(apiKey, VERSION_URL)
            GameVersion[] gameVersions = gson.fromJson(gameVersionsString, GameVersion[].class)
            def versions = gameVersions.findAll { it.gameVersionTypeID == gameVersionTypeID }

            String[] supportedVersions = [
                    "1.16",
                    "1.15",
                    "1.14",
                    "1.13"
            ]

            def supportedGameVersions = versions.findAll { supportedVersions.contains(it.name) }
            int[] supportedGameVersionIds = supportedGameVersions.collect { it.id }.toArray()

            println("Supported Version Id's ${supportedGameVersionIds}")

            Metadata uploadMetadata = new Metadata();

            uploadMetadata.changelog = "${project.github}/blob/${branch}/CHANGELOG.md"
            uploadMetadata.changelogType = "markdown"
            uploadMetadata.releaseType = "release"
            uploadMetadata.gameVersions = supportedGameVersionIds

            def uploadId = uploadFile(uploadMetadata, file(jar.archiveFile), apiKey, gson)

            println("Uploaded with ID: ${uploadId.id}")

            println("Published build")

        } else {
            println("Discord webhook unspecified")
        }
    }
//        id = project.curse_project_id
//        // TODO add code to reference this but also cut the latest change logs in for the files
//        changelogType = 'markdown'
//        releaseType = 'release'
}

task copyPlugin {
    doLast {
        copy {
            if (System.env.MC_SERVER_LOC == null) {
                throw new Exception('You must set the server location and jar to use')
            }
            println "$buildDir/libs/Advanced-Portals-${version}.jar"
            println "${System.env.MC_SERVER_LOC}/plugins/Advanced-Portals-${version}.jar"
            try {
                delete fileTree("${System.env.MC_SERVER_LOC}/plugins/") {
                    include "*.jar"
                }
            }
            catch (RuntimeException e) {
                println e.getLocalizedMessage()
            }
            from file("$buildDir/libs/Advanced-Portals-${version}.jar")
            into file("${System.env.MC_SERVER_LOC}/plugins/")
        }
    }
}

// Set SPIGOT_LOC to the location of your server and SPIGOT_JAR as the name of the jar file in the server you want to run
// DIReallyKnowWhatIAmDoingISwear is to remove the stupid pause spigot has at the start
task runJar() {
    doLast {
        if (System.env.MC_SERVER_LOC == null || System.env.MC_SERVER_JAR == null) {
            throw new Exception('You must set the server location and jar to use MC_SERVER_LOC and MC_SERVER_JAR')
        }
        javaexec {
            main "-jar"
            args "${System.env.MC_SERVER_LOC}\\${System.env.MC_SERVER_JAR}.jar"
            jvmArgs = ["-agentlib:jdwp=transport=dt_socket,server=y,suspend=n,address=5005", "-DIReallyKnowWhatIAmDoingISwear=true"]
            workingDir "${System.env.MC_SERVER_LOC}"
        }
    }
}

task publish {
    doLast {
        println "This is a dummy task to run others for version: ${version}"
    }
}

// https://github.com/researchgate/gradle-release
// Only other plugin I can find using auto & gradle https://github.com/intuit/hooks
release {
    failOnPublishNeeded = false
    failOnSnapshotDependencies = false
    git {
        requireBranch = ''
    }


    // Disable tasks because something we have is causing -x to be ignored
    createReleaseTag.enabled = false
    preTagCommit.enabled = false
    commitNewVersion.enabled = false
}

task cleanbuildfolder {
    doFirst {
        println "Cleaning up previous builds (to stop publishing old ones by mistake)"
        project.delete(files("${buildDir}/libs"))
    }
}

void updateFileVersion(String fileLoc, Pattern pattern, Closure<String> stringClosure) {
    File file = new File(projectDir, fileLoc)
    Matcher m = pattern.matcher(file.text)
    if (m.find()) {
        def newVersion = stringClosure.call(m)
        println "Replacing ${pattern.toString()} in ${fileLoc} with '${newVersion}'"
        file.text = file.text.replaceAll(pattern, newVersion)
    }
}

// Just to keep all numbers the same (as they are dotted all over the place)
task updateVersionNumbers {
    doFirst {
        def versionRegex = ~/(\nversion:\s)([0-9.-]+)/
        def velocityVersionRegex = ~/(\sversion\s=\s")([0-9.-]+)("\))/

        updateFileVersion("src/main/resources/bungee.yml", versionRegex,
                { Matcher m ->
                    return "${m.group(1)}${getVersion()}"
                })

        updateFileVersion("src/main/resources/plugin.yml", versionRegex,
                { Matcher m ->
                    return "${m.group(1)}${getVersion()}"
                })

        updateFileVersion("src/main/java/com/sekwah/advancedportals/velocity/AdvancedPortalsPlugin.java",
                velocityVersionRegex,
                { Matcher m ->
                    return "${m.group(1)}${getVersion()}${m.group(3)}"
                })
    }
}

updateVersion.finalizedBy 'updateVersionNumbers'

compileJava.dependsOn 'cleanbuildfolder'

// Publish rules
// Current behavior seems to be canary or release. Though pre-releases may break this pattern.
publish.dependsOn 'build'
publish.finalizedBy 'discordupload'
if (!isCanary) {
    publish.finalizedBy 'curseforge'
}