Use commit time instead for reproducible builds

app/build.gradle.kts

@@ -1,6 +1,5 @@
 import com.mikepenz.aboutlibraries.plugin.DuplicateMode.MERGE
 import com.mikepenz.aboutlibraries.plugin.DuplicateRule.GROUP
-import java.time.Instant
 
 val isRelease: Boolean
     get() = gradle.startParameter.taskNames.any { it.contains("Release") }
@@ -50,6 +49,10 @@ android {
         commandLine = "git rev-parse --short=7 HEAD".split(' ')
     }.standardOutput.asText.get().trim()
 
+    val commitTime = providers.exec {
+        commandLine = "git log -1 --format=%ct".split(' ')
+    }.standardOutput.asText.get().trim()
+
     val repoName = providers.exec {
         commandLine = "git remote get-url origin".split(' ')
     }.standardOutput.asText.get().trim().removePrefix("https://github.com/").removePrefix("git@github.com:")
@@ -83,6 +86,7 @@ android {
         )
         buildConfigField("String", "RAW_VERSION_NAME", "\"$versionName${versionNameSuffix.orEmpty()}\"")
         buildConfigField("String", "COMMIT_SHA", "\"$commitSha\"")
+        buildConfigField("long", "COMMIT_TIME", commitTime)
         buildConfigField("String", "REPO_NAME", "\"$repoName\"")
         buildConfigField("String", "CHROME_VERSION", "\"$chromeVersion\"")
         ndk {
@@ -138,11 +142,9 @@ android {
             isShrinkResources = true
             proguardFiles("proguard-rules.pro")
             signingConfig = signConfig
-            buildConfigField("long", "BUILD_TIME", "${Instant.now().epochSecond}")
         }
         debug {
             applicationIdSuffix = ".debug"
-            buildConfigField("long", "BUILD_TIME", "0")
             lint {
                 abortOnError = false
             }

app/src/main/kotlin/com/hippo/ehviewer/Settings.kt

@@ -169,7 +169,7 @@ object Settings : DataStorePreferences(null) {
     var recentToplist by stringPref("recent_toplist", "11")
     var userAgent by stringPref("user_agent", CHROME_USER_AGENT)
     var defaultDownloadLabel by stringOrNullPref("default_download_label", null)
-    var lastUpdateTime by longPref("last_update_time", BuildConfig.BUILD_TIME)
+    var lastUpdateTime by longPref("last_update_time", BuildConfig.COMMIT_TIME)
 
     // Tachiyomi Reader
     var newReader by boolPref("new_compose_reader", false)

app/src/main/kotlin/com/hippo/ehviewer/ui/settings/AboutScreen.kt

@@ -59,7 +59,7 @@ private const val RELEASE_URL = "$REPO_URL/releases"
 
 @Composable
 @Stable
-private fun versionCode() = "${BuildConfig.VERSION_NAME} (${BuildConfig.COMMIT_SHA})\n" + stringResource(R.string.settings_about_build_time, AppConfig.buildTime)
+private fun versionCode() = "${BuildConfig.VERSION_NAME} (${BuildConfig.COMMIT_SHA})\n" + stringResource(R.string.settings_about_commit_time, AppConfig.commitTime)
 
 @Composable
 @Stable

app/src/main/kotlin/com/hippo/ehviewer/util/AppConfig.kt

@@ -39,7 +39,7 @@ object AppConfig {
 
     fun matchVariant(name: String) = name.contains(BuildConfig.FLAVOR) && name.contains(abi)
 
-    val buildTime = ParserUtils.formatDate(BuildConfig.BUILD_TIME * 1000)
+    val commitTime = ParserUtils.formatDate(BuildConfig.COMMIT_TIME * 1000)
 
     val isSnapshot = "SNAPSHOT" in BuildConfig.VERSION_NAME
 

app/src/main/kotlin/com/hippo/ehviewer/util/Crash.kt

@@ -26,7 +26,7 @@ object Crash {
         writer.write("VersionName=${BuildConfig.VERSION_NAME}\n")
         writer.write("VersionCode=${BuildConfig.VERSION_CODE}\n")
         writer.write("CommitSha=${BuildConfig.COMMIT_SHA}\n")
-        writer.write("BuildTime=${AppConfig.buildTime}\n")
+        writer.write("CommitTime=${AppConfig.commitTime}\n")
         writer.write("\n")
 
         // Device info

app/src/main/res/values-zh-rCN/strings.xml

@@ -383,7 +383,7 @@
     <string name="settings_about_source">源码</string>
     <string name="license">许可证</string>
     <string name="settings_about_version">版本号</string>
-    <string name="settings_about_build_time">于 %s 构建</string>
+    <string name="settings_about_commit_time">于 %s 提交</string>
     <string name="settings_about_check_for_updates">检查更新</string>
     <!-- ExcludedLanguagesScene -->
     <string name="please_wait">请稍候</string>

app/src/main/res/values-zh-rTW/strings.xml

@@ -382,7 +382,7 @@
     <string name="settings_about_latest_release">最新版本</string>
     <string name="settings_about_source">原始碼</string>
     <string name="settings_about_version">版本號碼</string>
-    <string name="settings_about_build_time">於 %s 建置</string>
+    <string name="settings_about_commit_time">於 %s 提交</string>
     <string name="settings_about_check_for_updates">檢查更新</string>
     <string name="license">授權條款</string>
     <!-- ExcludedLanguagesScene -->

app/src/main/res/values/strings.xml

@@ -427,7 +427,7 @@
     <string name="settings_about_latest_release">Latest release</string>
     <string name="settings_about_source">Source</string>
     <string name="settings_about_version">Build version</string>
-    <string name="settings_about_build_time">Built at %s</string>
+    <string name="settings_about_commit_time">Committed at %s</string>
     <string name="settings_about_check_for_updates">Check for updates</string>
     <string name="license">License</string>
     <string name="cant_read_the_file">Can\'t read the file</string>