Add CiCommand.kt, CiConfig.kt, and CiRunner.kt for CI daemon implementation

src/main/kotlin/commands/ci/CiCommand.kt

@@ -0,0 +1,57 @@
+package de.steamwar.commands.ci
+
+import com.github.ajalt.clikt.core.CliktCommand
+import com.github.ajalt.clikt.core.Context
+import java.io.File
+import java.io.PrintStream
+import kotlin.concurrent.thread
+
+class CiCommand : CliktCommand("ci") {
+    override val hiddenFromHelp = true
+
+    override fun help(context: Context): String = "CI daemon for processing git push events"
+
+    override fun run() {
+        echo("SteamWar CI daemon started. Waiting for push events...")
+        echo("Format: <oldref> <newref> <branch>")
+
+        try {
+            while (true) {
+                val input = readlnOrNull() ?: break
+                val parts = input.split(" ")
+
+                if (parts.size < 3) {
+                    echo("Invalid input format. Expected: <oldref> <newref> <branch>", err = true)
+                    continue
+                }
+
+                val (oldref, newref, branch) = parts
+
+                // Fork/detach the build process
+                thread(isDaemon = false) {
+                    processBuild(oldref, newref, branch)
+                }
+            }
+        } catch (e: Exception) {
+            echo("CI daemon error: ${e.message}", err = true)
+        }
+    }
+
+    private fun processBuild(oldref: String, newref: String, branch: String) {
+        try {
+            val config = CiConfig(oldref, newref, branch)
+
+            // Create log file
+            val logFile = File(config.logpath)
+            logFile.parentFile?.mkdirs()
+
+            PrintStream(logFile).use { logStream ->
+                val runner = CiRunner(config)
+                runner.run(logStream)
+            }
+        } catch (e: Exception) {
+            System.err.println("Build failed: ${e.message}")
+            e.printStackTrace()
+        }
+    }
+}

src/main/kotlin/commands/ci/CiConfig.kt

@@ -0,0 +1,152 @@
+package de.steamwar.commands.ci
+
+import kotlinx.serialization.SerialName
+import kotlinx.serialization.Serializable
+import kotlinx.serialization.json.Json
+import kotlinx.serialization.json.JsonObject
+import kotlinx.serialization.json.jsonPrimitive
+import net.mamoe.yamlkt.Yaml
+import java.io.File
+import java.net.URI
+import java.net.http.HttpClient
+import java.net.http.HttpRequest
+import java.net.http.HttpResponse
+import java.nio.channels.FileChannel
+import java.nio.file.Path
+import java.nio.file.StandardOpenOption
+import java.util.Base64
+
+@Serializable
+data class CiDaemonConfig(
+    val token: String,
+    val nextlog: Int,
+    val logpath: String
+)
+
+@Serializable
+data class ProjectCiConfig(
+    val setup: List<String>? = null,
+    val build: List<String>,
+    val artifacts: Map<String, String>? = null,
+    val release: List<String>? = null,
+    @SerialName("release-branches")
+    val releaseBranches: Boolean = false
+)
+
+@Serializable
+data class GiteaRepoInfo(
+    @SerialName("default_branch")
+    val defaultBranch: String
+)
+
+class CiConfig(
+    oldref: String,
+    newref: String,
+    val branch: String
+) {
+    val oldcommit: String = oldref
+    val commit: String = newref
+
+    val user: String = System.getenv("GITEA_REPO_USER_NAME")
+        ?: throw IllegalStateException("GITEA_REPO_USER_NAME not set")
+    val repo: String = (System.getenv("GITEA_REPO_NAME")
+        ?: throw IllegalStateException("GITEA_REPO_NAME not set")).lowercase()
+    val repopath: String = System.getenv("PWD")
+        ?: System.getProperty("user.dir")
+
+    private val homeDir: String = System.getProperty("user.home")
+    val cidir: String = "$homeDir/ci"
+
+    val token: String
+    val lognumber: Int
+    val logpath: String
+
+    private val httpClient = HttpClient.newHttpClient()
+    private val json = Json { ignoreUnknownKeys = true }
+    private val yaml = Yaml { encodeDefaultValues = false }
+
+    init {
+        val configPath = "$homeDir/steamwarci.yml"
+        val configFile = File(configPath)
+
+        FileChannel.open(
+            Path.of(configPath),
+            StandardOpenOption.CREATE,
+            StandardOpenOption.READ,
+            StandardOpenOption.WRITE
+        ).use { channel ->
+            val lock = channel.lock()
+            try {
+                val daemonConfig = if (configFile.length() == 0L) {
+                    throw IllegalStateException("$configPath is empty or missing required keys")
+                } else {
+                    yaml.decodeFromString(CiDaemonConfig.serializer(), configFile.readText())
+                }
+
+                token = daemonConfig.token
+                lognumber = daemonConfig.nextlog
+                logpath = "${daemonConfig.logpath}/${daemonConfig.nextlog}.txt"
+
+                val updated = daemonConfig.copy(nextlog = daemonConfig.nextlog + 1)
+                configFile.writeText(yaml.encodeToString(CiDaemonConfig.serializer(), updated))
+            } finally {
+                lock.release()
+            }
+        }
+    }
+
+    fun apiQuery(method: String, endpoint: String, body: String? = null): String {
+        val requestBuilder = HttpRequest.newBuilder()
+            .uri(URI.create("https://git.steamwar.de/api/v1/repos/$user/$repo$endpoint?token=$token"))
+            .header("Content-Type", "application/json")
+
+        val request = when (method.uppercase()) {
+            "GET" -> requestBuilder.GET().build()
+            "POST" -> requestBuilder.POST(
+                body?.let { HttpRequest.BodyPublishers.ofString(it) }
+                    ?: HttpRequest.BodyPublishers.noBody()
+            ).build()
+
+            else -> throw IllegalArgumentException("Unsupported HTTP method: $method")
+        }
+
+        val response = httpClient.send(request, HttpResponse.BodyHandlers.ofString())
+        if (response.statusCode() !in 200..299) {
+            throw RuntimeException("Could not execute API request: ${response.statusCode()} ${response.body()}")
+        }
+        return response.body()
+    }
+
+    fun updateState(state: String, description: String) {
+        println("Statusupdate $state $description")
+        val body = """
+            {
+                \"context\": \"SteamWarCI\",
+                \"description\": \"$description\",
+                \"state\": \"$state\",
+                \"target_url\": \"https://steamwar.de/buildlogs/$lognumber.txt\"
+            }
+        """.trimIndent()
+        apiQuery("POST", "/statuses/$commit", body)
+    }
+
+    fun getCiConfig(): ProjectCiConfig {
+        println("Loading master/steamwarci.yml")
+        val response = apiQuery("GET", "/contents/steamwarci.yml")
+        val jsonObj = json.parseToJsonElement(response) as JsonObject
+        val content = jsonObj["content"]?.jsonPrimitive?.content
+            ?: throw RuntimeException("Could not get steamwarci.yml content")
+        val decoded = String(Base64.getDecoder().decode(content.replace("\n", "")))
+        return yaml.decodeFromString(ProjectCiConfig.serializer(), decoded)
+    }
+
+    fun getDefaultBranch(): String {
+        println("Getting default branch")
+        val response = apiQuery("GET", "")
+        val repoInfo = json.decodeFromString<GiteaRepoInfo>(response)
+        return repoInfo.defaultBranch
+    }
+
+    val udir: String get() = "$cidir/$user"
+    val wdir: String get() = "$udir/$repo"
+}

src/main/kotlin/commands/ci/CiRunner.kt

@@ -0,0 +1,162 @@
+package de.steamwar.commands.ci
+
+import java.io.File
+import java.io.PrintStream
+import java.nio.channels.FileChannel
+import java.nio.file.Path
+import java.nio.file.StandardOpenOption
+
+class CiRunner(private val config: CiConfig) {
+
+    private var logFile: PrintStream? = null
+
+    fun run(logStream: PrintStream) {
+        this.logFile = logStream
+
+        try {
+            config.updateState("pending", "Waiting for previous builds")
+
+            // Use file lock to ensure exclusive CI access
+            FileChannel.open(
+                Path.of(System.getProperty("user.home"), ".cilock"),
+                StandardOpenOption.CREATE,
+                StandardOpenOption.READ,
+                StandardOpenOption.WRITE
+            ).use { channel ->
+                val lock = channel.lock()
+                try {
+                    ciMain()
+                } finally {
+                    lock.release()
+                }
+            }
+        } catch (e: Exception) {
+            log("Error: ${e.message}")
+            e.printStackTrace(logStream)
+            config.updateState("failure", "Build failed")
+            throw e
+        }
+    }
+
+    private fun ciMain() {
+        config.updateState("pending", "Building project")
+
+        val ciConfig = config.getCiConfig()
+        val freshClone = !File(config.wdir).exists()
+
+        if (freshClone) {
+            File(config.udir).mkdirs()
+            runCommand("git clone -n ${config.repopath}", "Could not clone repository", config.udir)
+        } else {
+            runCommand("git fetch", "Could not fetch updates", config.wdir)
+        }
+
+        runCommand("git checkout ${config.commit}", "Could not checkout commit", config.wdir)
+        runCommand("git submodule update --init", "Could not init submodules", config.wdir)
+
+        if (freshClone && ciConfig.setup != null) {
+            for (cmd in ciConfig.setup) {
+                log("Setup: Executing $cmd")
+                runCommand(cmd, "Could not run setup command", config.wdir)
+            }
+        }
+
+        for (cmd in ciConfig.build) {
+            log("Build: Executing $cmd")
+            runCommand(cmd, "Could not run build command", config.wdir)
+        }
+
+        val onMaster = config.branch == "refs/heads/${config.getDefaultBranch()}"
+        val releaseBranchName = getReleaseBranchName()
+        val onReleaseBranch = releaseBranchName != null && ciConfig.releaseBranches
+
+        if (ciConfig.artifacts != null) {
+            log("Checking artifact existence")
+            for ((_, source) in ciConfig.artifacts) {
+                if (!File("${config.wdir}/$source").exists()) {
+                    throw RuntimeException("Artifact $source missing")
+                }
+            }
+
+            if (onMaster) {
+                log("Deploying artifacts")
+                for ((target, source) in ciConfig.artifacts) {
+                    log("Copying $source to $target")
+                    val expandedTarget = expandPath(target)
+                    runCommand("rm -f $expandedTarget", "Could not delete artifact", config.wdir)
+                    runCommand("cp -r $source $expandedTarget", "Could not copy artifacts", config.wdir)
+                    runCommand("chmod o-w $expandedTarget", "Could not change artifact perms", config.wdir)
+                }
+            } else if (onReleaseBranch) {
+                log("Deploying artifacts for release branch: $releaseBranchName")
+                for ((target, source) in ciConfig.artifacts) {
+                    val expandedTarget = expandPath(target)
+                    val targetFile = File(expandedTarget)
+                    val parentDir = targetFile.parentFile?.absolutePath ?: expandedTarget.substringBeforeLast("/")
+                    val fileName = targetFile.name
+                    val releaseTargetDir = "$parentDir/$releaseBranchName"
+                    val releaseTarget = "$releaseTargetDir/$fileName"
+
+                    log("Copying $source to $releaseTarget")
+                    runCommand("mkdir -p $releaseTargetDir", "Could not create release directory", config.wdir)
+                    runCommand("rm -f $releaseTarget", "Could not delete artifact", config.wdir)
+                    runCommand("cp -r $source $releaseTarget", "Could not copy artifacts", config.wdir)
+                    runCommand("chmod o-w $releaseTarget", "Could not change artifact perms", config.wdir)
+                }
+            }
+        }
+
+        if (ciConfig.release != null && (onMaster || onReleaseBranch)) {
+            log("Running release commands" + if (onReleaseBranch) " for release branch: $releaseBranchName" else "")
+            for (cmd in ciConfig.release) {
+                log("Release: Executing $cmd")
+                runCommand(cmd, "Could not run release command", config.wdir)
+            }
+        }
+
+        config.updateState("success", "Build successful")
+    }
+
+    private fun runCommand(command: String, errorMessage: String, workingDir: String) {
+        log("Running: $command")
+
+        val processBuilder = ProcessBuilder("/bin/sh", "-c", command)
+            .directory(File(workingDir))
+            .redirectErrorStream(true)
+
+        val process = processBuilder.start()
+
+        // Read and log output
+        process.inputStream.bufferedReader().forEachLine { line ->
+            log(line)
+        }
+
+        val exitCode = process.waitFor()
+        if (exitCode != 0) {
+            throw RuntimeException("$errorMessage (exit code: $exitCode)")
+        }
+    }
+
+    private fun expandPath(path: String): String {
+        return if (path.startsWith("~")) {
+            path.replaceFirst("~", System.getProperty("user.home"))
+        } else {
+            path
+        }
+    }
+
+    private fun getReleaseBranchName(): String? {
+        val releaseBranchPrefix = "refs/heads/release/"
+        return if (config.branch.startsWith(releaseBranchPrefix)) {
+            config.branch.removePrefix(releaseBranchPrefix)
+        } else {
+            null
+        }
+    }
+
+    private fun log(message: String) {
+        println(message)
+        logFile?.println(message)
+        logFile?.flush()
+    }
+}