Remove dead code.

libraries/matrix/api/src/main/kotlin/io/element/android/libraries/matrix/api/core/MatrixPatterns.kt

@@ -16,9 +16,6 @@
 
 package io.element.android.libraries.matrix.api.core
 
-import io.element.android.libraries.androidutils.metadata.isInDebug
-import timber.log.Timber
-
 /**
  * This class contains pattern to match the different Matrix ids
  * Ref: https://matrix.org/docs/spec/appendices#identifier-grammar
@@ -31,7 +28,7 @@ object MatrixPatterns {
     // See https://matrix.org/docs/spec/appendices#historical-user-ids
     // Sadly, we need to relax the regex pattern a bit as there already exist some ids that don't match the spec.
     private const val MATRIX_USER_IDENTIFIER_REGEX = "^@.*?$DOMAIN_REGEX$"
-    val PATTERN_CONTAIN_MATRIX_USER_IDENTIFIER = MATRIX_USER_IDENTIFIER_REGEX.toRegex(RegexOption.IGNORE_CASE)
+    private val PATTERN_CONTAIN_MATRIX_USER_IDENTIFIER = MATRIX_USER_IDENTIFIER_REGEX.toRegex(RegexOption.IGNORE_CASE)
 
     // regex pattern to find room ids in a string.
     private const val MATRIX_ROOM_IDENTIFIER_REGEX = "![A-Z0-9.-]+$DOMAIN_REGEX"
@@ -54,52 +51,6 @@ object MatrixPatterns {
     private const val MATRIX_EVENT_IDENTIFIER_V4_REGEX = "\\$[A-Z0-9\\-_]+"
     private val PATTERN_CONTAIN_MATRIX_EVENT_IDENTIFIER_V4 = MATRIX_EVENT_IDENTIFIER_V4_REGEX.toRegex(RegexOption.IGNORE_CASE)
 
-    // regex pattern to find group ids in a string.
-    private const val MATRIX_GROUP_IDENTIFIER_REGEX = "\\+[A-Z0-9=_\\-./]+$DOMAIN_REGEX"
-    private val PATTERN_CONTAIN_MATRIX_GROUP_IDENTIFIER = MATRIX_GROUP_IDENTIFIER_REGEX.toRegex(RegexOption.IGNORE_CASE)
-
-    // regex pattern to find permalink with message id.
-    // Android does not support in URL so extract it.
-    private const val PERMALINK_BASE_REGEX = "https://matrix\\.to/#/"
-    private const val APP_BASE_REGEX = "https://[A-Z0-9.-]+\\.[A-Z]{2,}/[A-Z]{3,}/#/room/"
-    const val SEP_REGEX = "/"
-
-    private const val LINK_TO_ROOM_ID_REGEXP = PERMALINK_BASE_REGEX + MATRIX_ROOM_IDENTIFIER_REGEX + SEP_REGEX + MATRIX_EVENT_IDENTIFIER_REGEX
-    private val PATTERN_CONTAIN_MATRIX_TO_PERMALINK_ROOM_ID = LINK_TO_ROOM_ID_REGEXP.toRegex(RegexOption.IGNORE_CASE)
-
-    private const val LINK_TO_ROOM_ALIAS_REGEXP = PERMALINK_BASE_REGEX + MATRIX_ROOM_ALIAS_REGEX + SEP_REGEX + MATRIX_EVENT_IDENTIFIER_REGEX
-    private val PATTERN_CONTAIN_MATRIX_TO_PERMALINK_ROOM_ALIAS = LINK_TO_ROOM_ALIAS_REGEXP.toRegex(RegexOption.IGNORE_CASE)
-
-    private const val LINK_TO_APP_ROOM_ID_REGEXP = APP_BASE_REGEX + MATRIX_ROOM_IDENTIFIER_REGEX + SEP_REGEX + MATRIX_EVENT_IDENTIFIER_REGEX
-    private val PATTERN_CONTAIN_APP_LINK_PERMALINK_ROOM_ID = LINK_TO_APP_ROOM_ID_REGEXP.toRegex(RegexOption.IGNORE_CASE)
-
-    private const val LINK_TO_APP_ROOM_ALIAS_REGEXP = APP_BASE_REGEX + MATRIX_ROOM_ALIAS_REGEX + SEP_REGEX + MATRIX_EVENT_IDENTIFIER_REGEX
-    private val PATTERN_CONTAIN_APP_LINK_PERMALINK_ROOM_ALIAS = LINK_TO_APP_ROOM_ALIAS_REGEXP.toRegex(RegexOption.IGNORE_CASE)
-
-    // ascii characters in the range \x20 (space) to \x7E (~)
-    val ORDER_STRING_REGEX = "[ -~]+".toRegex()
-
-    // list of patterns to find some matrix item.
-    val MATRIX_PATTERNS = listOf(
-        PATTERN_CONTAIN_MATRIX_TO_PERMALINK_ROOM_ID,
-        PATTERN_CONTAIN_MATRIX_TO_PERMALINK_ROOM_ALIAS,
-        PATTERN_CONTAIN_APP_LINK_PERMALINK_ROOM_ID,
-        PATTERN_CONTAIN_APP_LINK_PERMALINK_ROOM_ALIAS,
-        PATTERN_CONTAIN_MATRIX_USER_IDENTIFIER,
-        PATTERN_CONTAIN_MATRIX_ALIAS,
-        PATTERN_CONTAIN_MATRIX_ROOM_IDENTIFIER,
-        PATTERN_CONTAIN_MATRIX_EVENT_IDENTIFIER,
-        PATTERN_CONTAIN_MATRIX_GROUP_IDENTIFIER
-    )
-
-    /**
-     * Tells if a string is a valid session Id. This is an alias for [isUserId]
-     *
-     * @param str the string to test
-     * @return true if the string is a valid session id
-     */
-    fun isSessionId(str: String?) = isUserId(str)
-
     /**
      * Tells if a string is a valid user Id.
      *
@@ -158,69 +109,4 @@ object MatrixPatterns {
      * @return true if the string is a valid thread id.
      */
     fun isThreadId(str: String?) = isEventId(str)
-
-    /**
-     * Tells if a string is a valid group id.
-     *
-     * @param str the string to test
-     * @return true if the string is a valid group id.
-     */
-    fun isGroupId(str: String?): Boolean {
-        return str != null && str matches PATTERN_CONTAIN_MATRIX_GROUP_IDENTIFIER
-    }
-
-    /**
-     * Extract server name from a matrix id.
-     *
-     * @param matrixId
-     * @return null if not found or if matrixId is null
-     */
-    fun extractServerNameFromId(matrixId: String?): String? {
-        return matrixId?.substringAfter(":", missingDelimiterValue = "")?.takeIf { it.isNotEmpty() }
-    }
-
-    /**
-     * Extract user name from a matrix id.
-     *
-     * @param matrixId
-     * @return null if the input is not a valid matrixId
-     */
-    fun extractUserNameFromId(matrixId: String): String? {
-        return if (isUserId(matrixId)) {
-            matrixId.removePrefix("@").substringBefore(":", missingDelimiterValue = "")
-        } else {
-            null
-        }
-    }
-
-    /**
-     * Orders which are not strings, or do not consist solely of ascii characters in the range \x20 (space) to \x7E (~),
-     * or consist of more than 50 characters, are forbidden and the field should be ignored if received.
-     */
-    fun isValidOrderString(order: String?): Boolean {
-        return order != null && order.length < 50 && order matches ORDER_STRING_REGEX
-    }
-
-    /*
-    fun candidateAliasFromRoomName(roomName: String, domain: String): String {
-        return roomName.lowercase()
-                .replaceSpaceChars(replacement = "_")
-                .removeInvalidRoomNameChars()
-                .take(MatrixConstants.maxAliasLocalPartLength(domain))
-    }
-     */
-
-    /**
-     * Return the domain form a userId.
-     * Examples:
-     * - "@alice:domain.org".getDomain() will return "domain.org"
-     * - "@bob:domain.org:3455".getDomain() will return "domain.org:3455"
-     */
-    fun String.getServerName(): String {
-        if (isInDebug && !isUserId(this)) {
-            // They are some invalid userId localpart in the wild, but the domain part should be there anyway
-            Timber.w("Not a valid user ID: $this")
-        }
-        return substringAfter(":")
-    }
 }