build.gradle.kts

@@ -37,6 +37,7 @@ dependencies {
     implementation("com.h2database:h2:$h2_version")
     implementation("org.jetbrains.exposed:exposed-core:$exposed_version")
     implementation("org.jetbrains.exposed:exposed-jdbc:$exposed_version")
+    implementation("org.jetbrains.exposed:exposed-json:$exposed_version")
     implementation("org.jetbrains.exposed:exposed-kotlin-datetime:$exposed_version")
     implementation("io.ktor:ktor-server-netty-jvm")
     implementation("ch.qos.logback:logback-classic:$logback_version")

gradle.properties

@@ -4,4 +4,4 @@ logback_version=1.4.14
 kotlin.code.style=official
 postgres_version=42.7.3
 h2_version=2.1.214
-exposed_version=0.41.1
+exposed_version=0.51.1

src/main/kotlin/dev/frogmc/Config.kt

@@ -0,0 +1,14 @@
+package dev.frogmc
+
+object Config {
+    val POSTGRES_DATABASE = getEnv("DATABASE", "frogmc")
+    val POSTGRES_USER = getEnv("USER", "postgres")
+    val POSTGRES_PASSWORD = getEnv("PASSWORD", "example")
+    val POSTGRES_HOST = getEnv("HOST", "localhost")
+    val POSTGRES_PORT = getEnv("PORT", "5432")
+    val UPLOAD_SECRET = getEnv("UPLOAD_SECRET", "").toByteArray()
+
+    private fun getEnv(key: String, default: String): String {
+        return System.getenv("FROGMC_META_$key") ?: default
+    }
+}

src/main/kotlin/dev/frogmc/DB.kt

@@ -7,32 +7,22 @@ import org.jetbrains.exposed.sql.transactions.transaction
 object DB {
     var db: Database? = null
 
-    private fun getEnv(name: String, default: String): String {
-        return System.getenv(name) ?: default
-    }
-
     fun init(): Boolean {
         // use postgresql
         try {
-            val database = getEnv("FROGMC_META_DATABASE", "frogmc")
-            val user = getEnv("FROGMC_META_USER", "postgres")
-            val password = getEnv("FROGMC_META_PASSWORD", "example")
-            val host = getEnv("FROGMC_META_HOST", "localhost")
-            val port = getEnv("FROGMC_META_PORT", "5432")
-
             logger.info("Connecting to the database...")
             val d = Database.connect(
-                url = "jdbc:postgresql://$host:$port/$database",
+                url = "jdbc:postgresql://${Config.POSTGRES_HOST}:${Config.POSTGRES_PORT}/${Config.POSTGRES_DATABASE}",
                 driver = "org.postgresql.Driver",
-                user,
-                password
+                Config.POSTGRES_USER,
+                Config.POSTGRES_PASSWORD
             )
             db = d
             transaction(db) {
-                logger.info("what is going on")
                 SchemaUtils.create(
                     LoaderVersions,
-                    LibraryVersions
+                    LibraryVersions,
+                    File
                 )
             }
             if (db == null) {
@@ -45,32 +35,10 @@ object DB {
             logger.error(e.stackTraceToString())
             return false
         }
-        if (db == null) {
-            logger.error("Failed to connect to the database.")
-            return false
-        }
         logger.info(db!!.name)
         return true
     }
 
-    fun getLoaderVersions(): List<LoaderVersion> {
-        logger.info("Getting loader versions...")
-        if (db == null) {
-            logger.error("Database is null.")
-            init()
-        }
-        logger.info(db!!.name)
-        return transaction(db) {
-            return@transaction LoaderVersions.selectAll().map {
-                LoaderVersion(
-                    it[LoaderVersions.version],
-                    it[LoaderVersions.releaseDate],
-                    it[LoaderVersions.downloadUrl]
-                )
-            }
-        }.sortedBy { it.releaseDate }.reversed()
-    }
-
     fun getLibraryVersions(): List<LibraryVersion> {
         return transaction(db) {
             return@transaction LibraryVersions.selectAll().map {

src/main/kotlin/dev/frogmc/plugins/Auth.kt

@@ -0,0 +1,16 @@
+package dev.frogmc.plugins
+
+import dev.frogmc.Config
+import io.ktor.http.*
+import io.ktor.server.application.*
+import io.ktor.server.response.*
+import java.nio.charset.StandardCharsets
+import java.security.MessageDigest
+
+val authPlugin = createRouteScopedPlugin("auth") {
+    onCall {
+        val authorization = it.request.headers["Authorization"]
+        if (authorization.isNullOrEmpty() || !MessageDigest.isEqual(authorization.toByteArray(), Config.UPLOAD_SECRET))
+            it.respond(HttpStatusCode.Unauthorized);
+    }
+}

src/main/kotlin/dev/frogmc/plugins/Routing.kt

@@ -1,6 +1,9 @@
 package dev.frogmc.plugins
 
 import dev.frogmc.DB
+import dev.frogmc.types.LoaderVersion
+import dev.frogmc.types.PartialLoaderVersion
+import dev.frogmc.types.LoaderVersions
 import dev.frogmc.types.ModrinthVersion
 import io.ktor.client.*
 import io.ktor.client.call.*
@@ -9,108 +12,113 @@ import io.ktor.http.*
 import io.ktor.server.application.*
 import io.ktor.server.html.*
 import io.ktor.server.http.content.*
+import io.ktor.server.request.*
 import io.ktor.server.response.*
 import io.ktor.server.routing.*
 import kotlinx.html.*
 import kotlinx.serialization.json.Json
-
-fun BODY.route(block: DIV.() -> Unit) =
-    div(classes = "route", block)
-
+import org.jetbrains.exposed.exceptions.ExposedSQLException
+import org.jetbrains.exposed.sql.*
+import org.jetbrains.exposed.sql.SqlExpressionBuilder.eq
+import org.jetbrains.exposed.sql.transactions.transaction
 
 fun Application.configureRouting() {
     routing {
-        staticResources("/static", "static")
-        get("/") {
-            call.respondHtml {
-                head {
-                    title { +"FrogMC API" }
-                    link { rel = "stylesheet"; type = "text/css"; href = "/static/style.css" }
-                }
-                body {
-                    h1 { +"FrogMC API" }
-                    p { +"This is the FrogMC Meta API." }
-                    p { +"Use this to fetch versions of FrogMC library and loader." }
-                    br()
-                    p { +"Current API version: v1" }
-                    br()
-                    div(classes = "routes") {
-                        div(classes = "route") {
-                            code { +"GET /v1/loader/versions" }
-                            p { +"Fetches all versions of FrogMC loader." }
-                        }
-                        br()
-                        div(classes = "route") {
-                            code { +"GET /v1/loader/versions/latest" }
-                            p { +"Fetches the latest version of FrogMC loader." }
-                        }
-                        br()
-                        div(classes = "route") {
-                            code { +"GET /v1/loader/versions/{version}" }
-                            p { +"Fetches a specific version of FrogMC loader." }
-                        }
-                        br()
-                        div(classes = "route") {
-                            code { +"GET /v1/loader/versions/{version}/download" }
-                            p { +"Fetches the download URL of a specific version of FrogMC loader." }
-                        }
-                        br()
-                        div(classes = "route") {
-                            code { +"GET /v1/library/versions" }
-                            p { +"Fetches all versions of FrogMC library." }
-                        }
-                        br()
-                        div(classes = "route") {
-                            code { +"GET /v1/library/versions/latest" }
-                            p { +"Fetches the latest version of FrogMC library." }
-                        }
-                        br()
-                        div(classes = "route") {
-                            code { +"GET /v1/library/versions/{version}" }
-                            p { +"Fetches a specific version of FrogMC library." }
-                        }
-                        br()
-                        div(classes = "route") {
-                            code { +"GET /v1/library/versions/{version}/download" }
-                            p { +"Fetches the download URL of a specific version of FrogMC library." }
-                        }
-                    }
-                }
-            }
-        }
+        staticResources("/", "static")
         route("/v1") {
             route("/loader") {
                 get("/versions") {
-                    val versions = DB.getLoaderVersions()
-                    call.respond(versions)
+                    call.respond(transaction(DB.db) {
+                        LoaderVersions
+                            .select(LoaderVersions.version, LoaderVersions.releaseDate)
+                            .orderBy(LoaderVersions.releaseDate to SortOrder.ASC)
+                            .map {
+                                PartialLoaderVersion(
+                                    it[LoaderVersions.version],
+                                    it[LoaderVersions.releaseDate],
+                                )
+                            }
+                    })
                 }
                 get("/versions/latest") {
-                    val versions = DB.getLoaderVersions()
-                    call.respond(versions.first())
+                    val row = transaction(DB.db) {
+                        LoaderVersions
+                            .selectAll()
+                            .orderBy(LoaderVersions.releaseDate to SortOrder.DESC)
+                            .firstOrNull()
                     }
-                get("/versions/{version}/download") {
-                    val version = call.parameters["version"] ?: return@get call.respond(
-                        HttpStatusCode.BadRequest,
-                        "message" to "Invalid version."
+
+                    if (row == null) {
+                        call.respond(HttpStatusCode.NotFound)
+                        return@get
+                    }
+
+                    call.respond(
+                        LoaderVersion(
+                            row[LoaderVersions.version],
+                            row[LoaderVersions.releaseDate],
+                            row[LoaderVersions.libraries]
                         )
-                    val versions = DB.getLoaderVersions()
-                    val versionObj = versions.find { it.version == version } ?: return@get call.respond(
-                        HttpStatusCode.NotFound,
-                        "message" to "Version not found."
                     )
-                    call.respond("url" to versionObj.downloadUrl)
                 }
                 get("/versions/{version}") {
-                    val version = call.parameters["version"] ?: return@get call.respond(
-                        HttpStatusCode.BadRequest,
-                        "message" to "Invalid version."
+                    val version = call.parameters["version"] ?: return@get call.respond(HttpStatusCode.BadRequest)
+                    val row = transaction {
+                        LoaderVersions
+                            .selectAll()
+                            .where { LoaderVersions.version eq version }
+                            .firstOrNull()
+                    }
+
+                    if (row == null) {
+                        call.respond(HttpStatusCode.NotFound)
+                        return@get
+                    }
+
+                    call.respond(
+                        LoaderVersion(
+                            row[LoaderVersions.version],
+                            row[LoaderVersions.releaseDate],
+                            row[LoaderVersions.libraries]
                         )
-                    val versions = DB.getLoaderVersions()
-                    val versionObj = versions.find { it.version == version } ?: return@get call.respond(
-                        HttpStatusCode.NotFound,
-                        "message" to "Version not found."
                     )
-                    call.respond(versionObj)
+                }
+                route("/versions/upload") {
+                    install(authPlugin)
+                    post {
+                        val versionObj = call.receive<LoaderVersion>()
+
+                        try {
+                            transaction {
+                                LoaderVersions.insert {
+                                    it[version] = versionObj.version
+                                    it[releaseDate] = versionObj.releaseDate
+                                    it[libraries] = versionObj.libraries
+                                }
+                            }
+                        } catch (e: ExposedSQLException) { // TODO: this catches EVERYTHING
+                            call.respond(HttpStatusCode.Conflict)
+                            return@post
+                        }
+                        call.respond(HttpStatusCode.OK)
+                    }
+                }
+                route("/versions/delete/{version}") {
+                    install(authPlugin)
+                    delete {
+                        val version =
+                            call.parameters["version"] ?: return@delete call.respond(HttpStatusCode.BadRequest)
+                        val rows = transaction {
+                            LoaderVersions.deleteWhere { LoaderVersions.version eq version }
+                        }
+
+                        if (rows == 0) {
+                            call.respond(HttpStatusCode.NotFound)
+                            return@delete
+                        }
+
+                        call.respond(HttpStatusCode.OK)
+                    }
                 }
             }
             route("/library") {

src/main/kotlin/dev/frogmc/types/Other.kt

@@ -4,11 +4,25 @@ import kotlinx.datetime.LocalDateTime
 import kotlinx.serialization.Serializable
 
 
+@Serializable
+data class PartialLoaderVersion(
+    val version: String,
+    val releaseDate: LocalDateTime,
+)
+
 @Serializable
 data class LoaderVersion(
     val version: String,
     val releaseDate: LocalDateTime,
-    val downloadUrl: String
+    val libraries: List<LoaderLibrary>,
+)
+
+@Serializable
+data class LoaderLibrary(
+    val name: String,
+    val url: String,
+    val sha1: String,
+    val size: Int,
 )
 
 @Serializable

src/main/kotlin/dev/frogmc/types/Tables.kt

@@ -1,12 +1,14 @@
 package dev.frogmc.types
 
+import kotlinx.serialization.json.Json
 import org.jetbrains.exposed.sql.Table
+import org.jetbrains.exposed.sql.json.jsonb
 import org.jetbrains.exposed.sql.kotlin.datetime.datetime
 
 object LoaderVersions : Table() {
     val version = text("version")
     val releaseDate = datetime("release_date")
-    val downloadUrl = varchar("download_url", 255)
+    val libraries = jsonb<List<LoaderLibrary>>("libraries", Json)
     override val primaryKey = PrimaryKey(version)
 }
 
@@ -16,3 +18,10 @@ object LibraryVersions : Table() {
     val modrinthVersion = text("mr_version")
     override val primaryKey = PrimaryKey(version)
 }
+
+object File : Table() {
+    val version = text("version")
+    val sha1 = text("sha1")
+    val size = text("size")
+    val url = text("url")
+}

src/main/resources/static/index.html

@@ -1,7 +1,68 @@
+<!DOCTYPE html>
 <html>
   <head>
+    <title>FrogMC API</title>
+    <link rel="stylesheet" type="text/css" href="/style.css">
   </head>
   <body>
-<h1>Hello Ktor!</h1>
+    <h1>FrogMC API</h1>
+    <p>This is the FrogMC Meta API.</p>
+    <p>Use this to fetch versions of FrogMC library and loader.</p>
+    <br>
+    <p>Current API version: v1</p>
+    <br>
+    <div class="routes">
+      <div class="route">
+        <code>GET /v1/loader/versions</code>
+        <p>Fetches all versions of FrogMC loader.</p>
+      </div>
+      <br>
+      <div class="route">
+        <code>GET /v1/loader/versions/latest</code>
+        <p>Fetches the latest version of FrogMC loader.</p>
+      </div>
+      <br>
+      <div class="route">
+        <code>GET /v1/loader/versions/{version}</code>
+        <p>Fetches a specific version of FrogMC loader.</p>
+      </div>
+      <br>
+      <div class="route">
+        <code>GET /v1/loader/versions/{version}/download</code>
+        <p>Fetches the download URL of a specific version of FrogMC loader.</p>
+      </div>
+      <br>
+      <div class="route">
+        <code>POST /v1/loader/versions/upload</code>
+        <p>Uploads a version of the loader.</p>
+        <p><strong>This endpoint requires authorization.</strong></p>
+      </div>
+      <br>
+      <div class="route">
+        <code>DELETE /v1/loader/versions/delete/{version}</code>
+        <p>Deletes a version of the loader.</p>
+        <p><strong>This endpoint requires authorization.</strong></p>
+      </div>
+      <br>
+      <div class="route">
+        <code>GET /v1/library/versions</code>
+        <p>Fetches all versions of FrogMC library.</p>
+      </div>
+      <br>
+      <div class="route">
+        <code>GET /v1/library/versions/latest</code>
+        <p>Fetches the latest version of FrogMC library.</p>
+      </div>
+      <br>
+      <div class="route">
+        <code>GET /v1/library/versions/{version}</code>
+        <p>Fetches a specific version of FrogMC library.</p>
+      </div>
+      <br>
+      <div class="route">
+        <code>GET /v1/library/versions/{version}/download</code>
+        <p>Fetches the download URL of a specific version of FrogMC library.</p>
+      </div>
+    </div>
   </body>
 </html>

src/main/resources/static/style.css

@@ -18,7 +18,6 @@ div.routes {
     padding: 1em;
     background-color: var(--ctp-mocha-surface0);
     max-width: 400px;
-    margin-left: 38.5%;
     border-radius: 10px;
 }