android: show build info for mod's downloaded libraries

android/app/src/main/java/su/xash/engine/model/GameLibDownloader.kt

@@ -53,7 +53,14 @@ class GameLibDownloader(private val context: Context) {
 		val modKey: String,
 		val platformArch: String,
 		val filename: String,
-		val sha256: String
+		val sha256: String,
+		val sourceJson: String?
+	)
+
+	data class SourceInfo(
+		val url: String?,
+		val branch: String?,
+		val commit: String?
 	)
 
 	private fun manifestCacheFile(): File = File(context.cacheDir, "hlsdk-manifest.json")
@@ -140,9 +147,27 @@ class GameLibDownloader(private val context: Context) {
 		if (filename.isEmpty() || sha256.isEmpty())
 			return null
 
-		return ManifestEntry(modKey, platformArch, filename, sha256.lowercase())
+		val sourceJson = build.optJSONObject("source")?.toString()
+		return ManifestEntry(modKey, platformArch, filename, sha256.lowercase(), sourceJson)
 	}
 
+	fun getSourceInfo(gamedir: String): SourceInfo? {
+		val raw = prefs.getString("${gamedir}_source", null) ?: return null
+		return try {
+			val o = JSONObject(raw)
+			SourceInfo(
+				url = o.optString("url").ifEmpty { null },
+				branch = o.optString("branch").ifEmpty { null },
+				commit = o.optString("commit").ifEmpty { null },
+			)
+		} catch (_: Exception) {
+			null
+		}
+	}
+
+	fun getDownloadTime(gamedir: String): Long =
+		prefs.getLong("${gamedir}_download_time", 0L)
+
 	sealed class Lookup {
 		data class Available(val entry: ManifestEntry) : Lookup()
 		object NotInManifest : Lookup()
@@ -282,6 +307,7 @@ class GameLibDownloader(private val context: Context) {
 				prefs.edit()
 					.putString("${gamedir}_sha256", entry.sha256)
 					.putString("${gamedir}_filename", entry.filename)
+					.putString("${gamedir}_source", entry.sourceJson)
 					.putLong("${gamedir}_download_time", System.currentTimeMillis())
 					.apply()
 

android/app/src/main/java/su/xash/engine/ui/settings/GameSettingsPreferenceFragment.kt

@@ -1,11 +1,17 @@
 package su.xash.engine.ui.settings
 
+import android.content.Intent
 import android.os.Bundle
+import androidx.core.net.toUri
 import androidx.preference.ListPreference
+import androidx.preference.Preference
 import androidx.preference.PreferenceFragmentCompat
 import androidx.preference.SwitchPreferenceCompat
 import su.xash.engine.R
 import su.xash.engine.model.Game
+import su.xash.engine.model.GameLibDownloader
+import java.text.DateFormat
+import java.util.Date
 
 class GameSettingsPreferenceFragment(val game: Game) : PreferenceFragmentCompat() {
 	override fun onCreatePreferences(savedInstanceState: Bundle?, rootKey: String?) {
@@ -26,6 +32,8 @@ class GameSettingsPreferenceFragment(val game: Game) : PreferenceFragmentCompat(
 			enableYaPBBots.isVisible = true
 		}
 
+		populateDownloadedBuildInfo()
+
 		val separatePackages = findPreference<SwitchPreferenceCompat>("separate_libraries")!!
 		val clientPackage = findPreference<ListPreference>("client_package")!!
 		val serverPackage = findPreference<ListPreference>("server_package")!!
@@ -43,4 +51,43 @@ class GameSettingsPreferenceFragment(val game: Game) : PreferenceFragmentCompat(
 			true
 		}
 	}
+
+	private fun populateDownloadedBuildInfo() {
+		val downloader = GameLibDownloader(requireContext())
+		val source = downloader.getSourceInfo(game.basedir.name) ?: return
+		val downloadedAt = downloader.getDownloadTime(game.basedir.name)
+
+		val urlPref = findPreference<Preference>("source_url")!!
+		urlPref.isVisible = true
+		urlPref.summary = source.url ?: "—"
+		urlPref.isEnabled = source.url != null
+		urlPref.setOnPreferenceClickListener {
+			source.url?.let {
+				startActivity(Intent(Intent.ACTION_VIEW, it.toUri()))
+			}
+			true
+		}
+
+		val branchPref = findPreference<Preference>("source_branch")!!
+		branchPref.isVisible = true
+		branchPref.summary = source.branch ?: "—"
+
+		val commitPref = findPreference<Preference>("source_commit")!!
+		commitPref.isVisible = true
+		commitPref.summary = source.commit ?: "—"
+		commitPref.isEnabled = source.commit != null && source.url != null
+		commitPref.setOnPreferenceClickListener {
+			// FIXME: GitHub-styled URL!
+			val target = "${source.url!!.trimEnd('/')}/commit/${source.commit}"
+			startActivity(Intent(Intent.ACTION_VIEW, target.toUri()))
+			true
+		}
+
+		val timePref = findPreference<Preference>("downloaded_at")!!
+		timePref.isVisible = true
+		timePref.summary = if (downloadedAt > 0L)
+			DateFormat.getDateTimeInstance().format(Date(downloadedAt))
+		else
+			"—"
+	}
 }