v1.0.4: Fix tiptapToMarkdown JsonElement type casting

- tiptapToMarkdown used JsonObject.asMap() which returns Map<String, JsonElement> - All 'as? String' casts silently failed (JsonPrimitive != String), returning empty - Now uses Gson TypeToken<Map<String, Any?>> for proper raw type deserialization - contentToMarkdown now handles Map types directly without serialize roundtrip
v1.0.3: Fix TipTap JSON content conversion for editor display
2026-07-27 17:32:47 -06:00 · 2026-07-27 17:25:40 -06:00
11 changed files with 197 additions and 100 deletions
--- a/app/build.gradle.kts
+++ b/app/build.gradle.kts
@@ -20,8 +20,8 @@ android {
        applicationId = "com.docmost.app"
        minSdk = 26
        targetSdk = 34
-        versionCode = 2
-        versionName = "1.0.1"
+        versionCode = 5
+        versionName = "1.0.4"
    }

    signingConfigs {
--- a/app/proguard-rules.pro
+++ b/app/proguard-rules.pro
@@ -2,5 +2,14 @@
 -keepattributes Signature
 -keepattributes *Annotation*
 -keep class com.docmost.app.api.** { *; }
+-keep class com.docmost.app.data.** { *; }
 -dontwarn okhttp3.**
 -dontwarn okio.**
+
+# Gson - preserve TypeToken anonymous subclasses and generic signatures
+-keep class com.google.gson.** { *; }
+-keep class * extends com.google.gson.reflect.TypeToken { *; }
+-keep class * extends com.google.gson.TypeAdapter { *; }
+-keepattributes Signature
+-keepattributes RuntimeVisibleAnnotations
+-keep class sun.misc.Unsafe { *; }
--- a/app/src/main/java/com/docmost/app/api/DocmostApi.kt
+++ b/app/src/main/java/com/docmost/app/api/DocmostApi.kt
@@ -3,7 +3,6 @@ package com.docmost.app.api
 import android.util.Log
 import com.docmost.app.BuildConfig
 import com.google.gson.Gson
-import com.google.gson.reflect.TypeToken
 import kotlinx.coroutines.Dispatchers
 import kotlinx.coroutines.withContext
 import android.content.Context
@@ -119,17 +118,55 @@ class DocmostApi(private val baseUrl: String) {

    suspend fun getSpaces(): List<Space> = withContext(Dispatchers.IO) {
        val json = post("/api/spaces")
-        val type = object : TypeToken<DocmostResponse<SpacesData>>() {}.type
-        val response = gson.fromJson<DocmostResponse<SpacesData>>(json, type)
-        val items = response.data?.items ?: emptyList()
-        items
+        if (BuildConfig.DEBUG) Log.d("DocmostAPI", "Spaces response: $json")
+        val element = com.google.gson.JsonParser.parseString(json)
+        if (element.isJsonArray) {
+            element.asJsonArray.map { gson.fromJson(it, Space::class.java) }
+        } else {
+            val obj = element.asJsonObject
+            val data = obj.get("data")
+            if (data != null && data.isJsonObject) {
+                val items = data.asJsonObject.get("items")
+                if (items != null && items.isJsonArray) {
+                    items.asJsonArray.map { gson.fromJson(it, Space::class.java) }
+                } else emptyList()
+            } else if (data != null && data.isJsonArray) {
+                data.asJsonArray.map { gson.fromJson(it, Space::class.java) }
+            } else emptyList()
+        }
    }

    suspend fun getSidebarPages(spaceId: String, pageId: String? = null): List<Page> = withContext(Dispatchers.IO) {
        val json = post("/api/pages/sidebar-pages", SidebarPagesRequest(spaceId = spaceId, pageId = pageId))
-        val type = object : TypeToken<DocmostResponse<PagesData>>() {}.type
-        val response = gson.fromJson<DocmostResponse<PagesData>>(json, type)
-        response.data?.items ?: emptyList()
+        parseJsonArray<Page>(json) { gson.fromJson(it, Page::class.java) }
+    }
+
+    private fun <T> parseJsonArray(json: String, mapper: (com.google.gson.JsonElement) -> T): List<T> {
+        val element = com.google.gson.JsonParser.parseString(json)
+        if (element.isJsonArray) {
+            return element.asJsonArray.map(mapper)
+        }
+        val obj = element.asJsonObject
+        val data = obj.get("data")
+        if (data != null && data.isJsonObject) {
+            val items = data.asJsonObject.get("items")
+            if (items != null && items.isJsonArray) {
+                return items.asJsonArray.map(mapper)
+            }
+        } else if (data != null && data.isJsonArray) {
+            return data.asJsonArray.map(mapper)
+        }
+        return emptyList()
+    }
+
+    private fun <T> parseJsonObject(json: String, mapper: (String) -> T): T? {
+        val element = com.google.gson.JsonParser.parseString(json)
+        val objJson = if (element.isJsonObject) {
+            val obj = element.asJsonObject
+            val data = obj.get("data")
+            if (data != null && data.isJsonObject) data.toString() else json
+        } else json
+        return mapper(objJson)
    }

    private suspend fun fetchPageChildren(spaceId: String, parentPage: Page, allPages: MutableList<Page>) {
@@ -156,9 +193,16 @@ class DocmostApi(private val baseUrl: String) {

    suspend fun getPageInfo(pageId: String, format: String = "json"): Page = withContext(Dispatchers.IO) {
        val json = post("/api/pages/info", PageInfoRequest(pageId, format))
-        val type = object : TypeToken<DocmostResponse<Page>>() {}.type
-        val response = gson.fromJson<DocmostResponse<Page>>(json, type)
-        response.data ?: throw IOException("Page not found in response")
+        Log.d("DocmostAPI", "PageInfo response: $json")
+        val element = com.google.gson.JsonParser.parseString(json)
+        val pageJson = if (element.isJsonObject) {
+            val obj = element.asJsonObject
+            val data = obj.get("data")
+            if (data != null && data.isJsonObject) data.toString() else json
+        } else json
+        Log.d("DocmostAPI", "PageInfo parsed: $pageJson")
+        val page = gson.fromJson(pageJson, Page::class.java)
+        page ?: throw IOException("Page not found in response")
    }

    suspend fun getPageHtml(pageId: String): String = withContext(Dispatchers.IO) {
@@ -181,9 +225,8 @@ class DocmostApi(private val baseUrl: String) {
                    description = description
                )
            )
-            val type = object : TypeToken<DocmostResponse<Space>>() {}.type
-            val response = gson.fromJson<DocmostResponse<Space>>(json, type)
-            response.data ?: throw IOException("Space update response missing data")
+            parseJsonObject(json) { gson.fromJson(it, Space::class.java) }
+                ?: throw IOException("Space update response missing data")
        }

    suspend fun uploadSpaceIcon(spaceId: String, imageUri: Uri, context: Context): String =
@@ -235,38 +278,32 @@ class DocmostApi(private val baseUrl: String) {
                    operation = "replace"
                )
            )
-            val type = object : TypeToken<DocmostResponse<Page>>() {}.type
-            val response = gson.fromJson<DocmostResponse<Page>>(json, type)
-            response.data ?: throw IOException("Update response missing data")
+            parseJsonObject(json) { gson.fromJson(it, Page::class.java) }
+                ?: throw IOException("Update response missing data")
        }

    suspend fun getCurrentUser(): User = withContext(Dispatchers.IO) {
        val json = post("/api/users/me")
-        val type = object : TypeToken<DocmostResponse<UserInfoResponse>>() {}.type
-        val response = gson.fromJson<DocmostResponse<UserInfoResponse>>(json, type)
-        response.data?.user ?: throw IOException("User not found in response")
+        val user = parseJsonObject(json) { gson.fromJson(it, User::class.java) }
+        user ?: throw IOException("User not found in response")
    }

    suspend fun updateUser(name: String?): User = withContext(Dispatchers.IO) {
        val json = post("/api/users/update", UserUpdateRequest(name = name))
-        val type = object : TypeToken<DocmostResponse<User>>() {}.type
-        val response = gson.fromJson<DocmostResponse<User>>(json, type)
-        response.data ?: throw IOException("Update user response missing data")
+        parseJsonObject(json) { gson.fromJson(it, User::class.java) }
+            ?: throw IOException("Update user response missing data")
    }

    suspend fun searchPages(query: String): List<SearchResult> = withContext(Dispatchers.IO) {
        val json = post("/api/search", SearchRequest(query = query))
-        val type = object : TypeToken<DocmostResponse<SearchResultsResponse>>() {}.type
-        val response = gson.fromJson<DocmostResponse<SearchResultsResponse>>(json, type)
-        response.data?.items ?: emptyList()
+        parseJsonArray(json) { gson.fromJson(it, SearchResult::class.java) }
    }

    suspend fun createSpace(name: String, slug: String, description: String? = null): Space =
        withContext(Dispatchers.IO) {
            val json = post("/api/spaces/create", CreateSpaceRequest(name = name, slug = slug, description = description))
-            val type = object : TypeToken<DocmostResponse<Space>>() {}.type
-            val response = gson.fromJson<DocmostResponse<Space>>(json, type)
-            response.data ?: throw IOException("Create space response missing data")
+            parseJsonObject(json) { gson.fromJson(it, Space::class.java) }
+                ?: throw IOException("Create space response missing data")
        }

    suspend fun removeAvatar() = withContext(Dispatchers.IO) {
@@ -306,16 +343,13 @@ class DocmostApi(private val baseUrl: String) {

    suspend fun getRecentPages(): List<Page> = withContext(Dispatchers.IO) {
        val json = post("/api/pages/recent", RecentPageRequest())
-        val type = object : TypeToken<DocmostResponse<RecentPagesResponse>>() {}.type
-        val response = gson.fromJson<DocmostResponse<RecentPagesResponse>>(json, type)
-        response.data?.items ?: emptyList()
+        parseJsonArray(json) { gson.fromJson(it, Page::class.java) }
    }

    suspend fun createPage(title: String, spaceId: String): Page = withContext(Dispatchers.IO) {
        val json = post("/api/pages/create", CreatePageRequest(title = title, spaceId = spaceId))
-        val type = object : TypeToken<DocmostResponse<Page>>() {}.type
-        val response = gson.fromJson<DocmostResponse<Page>>(json, type)
-        response.data ?: throw IOException("Create page response missing data")
+        parseJsonObject(json) { gson.fromJson(it, Page::class.java) }
+            ?: throw IOException("Create page response missing data")
    }

    suspend fun deletePage(pageId: String) = withContext(Dispatchers.IO) {
@@ -328,16 +362,13 @@ class DocmostApi(private val baseUrl: String) {

    suspend fun getShares(): List<Share> = withContext(Dispatchers.IO) {
        val json = post("/api/shares/", mapOf("limit" to 50))
-        val type = object : TypeToken<DocmostResponse<SharesData>>() {}.type
-        val response = gson.fromJson<DocmostResponse<SharesData>>(json, type)
-        response.data?.items ?: emptyList()
+        parseJsonArray(json) { gson.fromJson(it, Share::class.java) }
    }

    suspend fun createShare(pageId: String): Share = withContext(Dispatchers.IO) {
        val json = post("/api/shares/create", CreateShareDto(pageId = pageId))
-        val type = object : TypeToken<DocmostResponse<Share>>() {}.type
-        val response = gson.fromJson<DocmostResponse<Share>>(json, type)
-        response.data ?: throw IOException("Create share response missing data")
+        parseJsonObject(json) { gson.fromJson(it, Share::class.java) }
+            ?: throw IOException("Create share response missing data")
    }

    suspend fun deleteShare(shareId: String) = withContext(Dispatchers.IO) {
@@ -346,23 +377,19 @@ class DocmostApi(private val baseUrl: String) {

    suspend fun getComments(pageId: String): List<Comment> = withContext(Dispatchers.IO) {
        val json = post("/api/comments/", mapOf("pageId" to pageId))
-        val type = object : TypeToken<DocmostResponse<CommentsData>>() {}.type
-        val response = gson.fromJson<DocmostResponse<CommentsData>>(json, type)
-        response.data?.items ?: emptyList()
+        parseJsonArray(json) { gson.fromJson(it, Comment::class.java) }
    }

    suspend fun createComment(pageId: String, content: String): Comment = withContext(Dispatchers.IO) {
        val json = post("/api/comments/create", CreateCommentDto(pageId = pageId, content = content))
-        val type = object : TypeToken<DocmostResponse<Comment>>() {}.type
-        val response = gson.fromJson<DocmostResponse<Comment>>(json, type)
-        response.data ?: throw IOException("Create comment response missing data")
+        parseJsonObject(json) { gson.fromJson(it, Comment::class.java) }
+            ?: throw IOException("Create comment response missing data")
    }

    suspend fun updateComment(commentId: String, content: String): Comment = withContext(Dispatchers.IO) {
        val json = post("/api/comments/update", UpdateCommentDto(commentId = commentId, content = content))
-        val type = object : TypeToken<DocmostResponse<Comment>>() {}.type
-        val response = gson.fromJson<DocmostResponse<Comment>>(json, type)
-        response.data ?: throw IOException("Update comment response missing data")
+        parseJsonObject(json) { gson.fromJson(it, Comment::class.java) }
+            ?: throw IOException("Update comment response missing data")
    }

    suspend fun deleteComment(commentId: String) = withContext(Dispatchers.IO) {
@@ -371,9 +398,8 @@ class DocmostApi(private val baseUrl: String) {

    suspend fun duplicatePage(pageId: String, targetSpaceId: String? = null): Page = withContext(Dispatchers.IO) {
        val json = post("/api/pages/duplicate", DuplicatePageRequest(pageId = pageId, spaceId = targetSpaceId))
-        val type = object : TypeToken<DocmostResponse<Page>>() {}.type
-        val response = gson.fromJson<DocmostResponse<Page>>(json, type)
-        response.data ?: throw IOException("Duplicate response missing data")
+        parseJsonObject(json) { gson.fromJson(it, Page::class.java) }
+            ?: throw IOException("Duplicate response missing data")
    }

    suspend fun movePageToSpace(pageId: String, spaceId: String) = withContext(Dispatchers.IO) {
@@ -391,31 +417,33 @@ class DocmostApi(private val baseUrl: String) {

    suspend fun getPageHistory(pageId: String): List<PageHistory> = withContext(Dispatchers.IO) {
        val json = post("/api/pages/history", PageHistoryRequest(pageId = pageId))
-        val type = object : TypeToken<DocmostResponse<PageHistoryResponse>>() {}.type
-        val response = gson.fromJson<DocmostResponse<PageHistoryResponse>>(json, type)
-        response.data?.items ?: emptyList()
+        parseJsonArray(json) { gson.fromJson(it, PageHistory::class.java) }
    }

    suspend fun getPageHistoryInfo(pageId: String, historyId: String): PageHistory = withContext(Dispatchers.IO) {
        val json = post("/api/pages/history/info", mapOf("pageId" to pageId, "historyId" to historyId))
-        val type = object : TypeToken<DocmostResponse<PageHistory>>() {}.type
-        val response = gson.fromJson<DocmostResponse<PageHistory>>(json, type)
-        response.data ?: throw IOException("Page history not found in response")
+        parseJsonObject(json) { gson.fromJson(it, PageHistory::class.java) }
+            ?: throw IOException("Page history not found in response")
    }

    suspend fun getPageContent(pageId: String): PageContent = withContext(Dispatchers.IO) {
        val json = post("/api/pages/info", PageInfoRequest(pageId = pageId))
-        val type = object : TypeToken<DocmostResponse<Page>>() {}.type
-        val response = gson.fromJson<DocmostResponse<Page>>(json, type)
-        val page = response.data ?: throw IOException("Page not found in response")
+        Log.d("DocmostAPI", "PageContent response: $json")
+        val element = com.google.gson.JsonParser.parseString(json)
+        val pageJson = if (element.isJsonObject) {
+            val obj = element.asJsonObject
+            val data = obj.get("data")
+            if (data != null && data.isJsonObject) data.toString() else json
+        } else json
+        Log.d("DocmostAPI", "PageContent parsed: $pageJson")
+        val page = gson.fromJson(pageJson, Page::class.java)
+        page ?: throw IOException("Page not found in response")
        PageContent(source = page.source ?: "")
    }

    suspend fun getDeletedPages(spaceId: String): List<DeletedPage> = withContext(Dispatchers.IO) {
        val json = post("/api/pages/trash", DeletedPagesRequest(spaceId = spaceId))
-        val type = object : TypeToken<DocmostResponse<DeletedPagesResponse>>() {}.type
-        val response = gson.fromJson<DocmostResponse<DeletedPagesResponse>>(json, type)
-        response.data?.items ?: emptyList()
+        parseJsonArray(json) { gson.fromJson(it, DeletedPage::class.java) }
    }

    suspend fun restorePage(pageId: String, spaceId: String? = null) = withContext(Dispatchers.IO) {
@@ -467,9 +495,7 @@ class DocmostApi(private val baseUrl: String) {

    suspend fun getPageAttachments(pageId: String): List<Attachment> = withContext(Dispatchers.IO) {
        val json = post("/api/attachments/page", mapOf("pageId" to pageId))
-        val type = object : TypeToken<DocmostResponse<AttachmentsResponse>>() {}.type
-        val response = gson.fromJson<DocmostResponse<AttachmentsResponse>>(json, type)
-        response.data?.items ?: emptyList()
+        parseJsonArray(json) { gson.fromJson(it, Attachment::class.java) }
    }

    private fun getFileNameFromUri(context: android.content.Context, uri: android.net.Uri): String? {
--- a/app/src/main/java/com/docmost/app/data/PageCacheManager.kt
+++ b/app/src/main/java/com/docmost/app/data/PageCacheManager.kt
@@ -4,7 +4,7 @@ import android.content.Context
 import com.docmost.app.api.Page
 import com.docmost.app.BuildConfig
 import com.google.gson.Gson
-import com.google.gson.reflect.TypeToken
+import com.google.gson.JsonParser
 import java.io.File
 import java.security.MessageDigest

@@ -123,8 +123,8 @@ class PageCacheManager(private val context: Context) {
    fun getCachedPages(): List<CachedPageMeta> {
        return try {
            if (!indexFile.exists()) return emptyList()
-            val type = object : TypeToken<List<CachedPageMeta>>() {}.type
-            gson.fromJson(indexFile.readText(), type) ?: emptyList()
+            val array = JsonParser.parseString(indexFile.readText()).asJsonArray
+            array.map { gson.fromJson(it, CachedPageMeta::class.java) }
        } catch (e: Exception) {
            emptyList()
        }
@@ -153,8 +153,8 @@ class PageCacheManager(private val context: Context) {
        return try {
            val file = File(spacePagesDir, "$spaceId.json")
            if (!file.exists()) return null
-            val type = object : TypeToken<List<Page>>() {}.type
-            gson.fromJson(file.readText(), type)
+            val array = JsonParser.parseString(file.readText()).asJsonArray
+            array.map { gson.fromJson(it, Page::class.java) }
        } catch (e: Exception) {
            null
        }
@@ -178,8 +178,8 @@ class PageCacheManager(private val context: Context) {
    private fun getIndex(): List<CachedPageMeta> {
        return try {
            if (!indexFile.exists()) return emptyList()
-            val type = object : TypeToken<List<CachedPageMeta>>() {}.type
-            gson.fromJson(indexFile.readText(), type) ?: emptyList()
+            val array = JsonParser.parseString(indexFile.readText()).asJsonArray
+            array.map { gson.fromJson(it, CachedPageMeta::class.java) }
        } catch (e: Exception) {
            emptyList()
        }
--- a/app/src/main/java/com/docmost/app/data/SessionManager.kt
+++ b/app/src/main/java/com/docmost/app/data/SessionManager.kt
@@ -5,6 +5,7 @@ import android.content.SharedPreferences
 import androidx.security.crypto.EncryptedSharedPreferences
 import androidx.security.crypto.MasterKeys
 import com.google.gson.Gson
+import com.google.gson.JsonParser


 data class Credentials(
@@ -110,8 +111,8 @@ class SessionManager(private val context: Context) {
            null
        } ?: return emptyList()
        return try {
-            val type = com.google.gson.reflect.TypeToken.getParameterized(List::class.java, Credentials::class.java).type
-            gson.fromJson(json, type)
+            val array = JsonParser.parseString(json).asJsonArray
+            array.map { gson.fromJson(it, Credentials::class.java) }
        } catch (e: Exception) {
            emptyList()
        }
--- a/app/src/main/java/com/docmost/app/data/SpaceCacheManager.kt
+++ b/app/src/main/java/com/docmost/app/data/SpaceCacheManager.kt
@@ -4,7 +4,7 @@ import android.content.Context
 import com.docmost.app.api.Space
 import com.docmost.app.BuildConfig
 import com.google.gson.Gson
-import com.google.gson.reflect.TypeToken
+import com.google.gson.JsonParser
 import java.io.File
 import java.security.MessageDigest

@@ -119,8 +119,8 @@ class SpaceCacheManager(private val context: Context) {
    fun getIndex(): List<CachedSpaceMeta> {
        return try {
            if (!indexFile.exists()) return emptyList()
-            val type = object : TypeToken<List<CachedSpaceMeta>>() {}.type
-            gson.fromJson(indexFile.readText(), type) ?: emptyList()
+            val array = JsonParser.parseString(indexFile.readText()).asJsonArray
+            array.map { gson.fromJson(it, CachedSpaceMeta::class.java) }
        } catch (e: Exception) {
            emptyList()
        }
--- a/app/src/main/java/com/docmost/app/data/SyncQueue.kt
+++ b/app/src/main/java/com/docmost/app/data/SyncQueue.kt
@@ -6,7 +6,6 @@ import androidx.room.PrimaryKey
 import androidx.room.TypeConverter
 import androidx.room.TypeConverters
 import com.google.gson.Gson
-import com.google.gson.reflect.TypeToken

 enum class OperationType {
    CREATE_SPACE,
--- a/app/src/main/java/com/docmost/app/ui/PageEditorActivity.kt
+++ b/app/src/main/java/com/docmost/app/ui/PageEditorActivity.kt
@@ -59,7 +59,6 @@ import com.docmost.app.utils.NetworkConnectivityObserver
 import com.docmost.app.utils.NetworkStatus
 import com.docmost.app.databinding.ActivityPageEditorBinding
 import com.google.gson.GsonBuilder
-import com.google.gson.reflect.TypeToken
 import kotlinx.coroutines.CoroutineScope
 import kotlinx.coroutines.Dispatchers
 import kotlinx.coroutines.launch
@@ -1878,8 +1877,8 @@ class PageEditorActivity : AppCompatActivity() {

    private fun tiptapToMarkdown(tiptapJson: String): String {
        return try {
-            val mapType = object : TypeToken<Map<String, Any?>>() {}.type
-            val doc = gson.fromJson<Map<String, Any?>>(tiptapJson, mapType)
+            val type = object : com.google.gson.reflect.TypeToken<Map<String, Any?>>() {}.type
+            val doc: Map<String, Any?> = gson.fromJson(tiptapJson, type)
            extractText(doc)
        } catch (e: Exception) {
            tiptapJson
@@ -2090,11 +2089,13 @@ class PageEditorActivity : AppCompatActivity() {
        canEdit = page.permissions?.canEdit ?: true
        currentPage = page
        
+        android.util.Log.d("PageEditor", "renderPageContent: page.content type=${page.content?.let { it::class.java.simpleName } ?: "null"}")
+        
        if (!canEdit) {
            loadReadOnlyPreview(page)
        } else {
            val markdown = contentToMarkdown(page.content)
-            if (BuildConfig.DEBUG) android.util.Log.d("PageEditor", "Markdown content length: ${markdown.length}")
+            android.util.Log.d("PageEditor", "Markdown content length: ${markdown.length}")
            currentPageContent = markdown
            originalContent = markdown
            binding.etTitle.setText(page.title)
@@ -2484,13 +2485,66 @@ class PageEditorActivity : AppCompatActivity() {

    private fun contentToMarkdown(content: Any?): String {
        if (content == null) return ""
-        if (content is String) return content
+        if (content is String) {
+            return if (content.trimStart().startsWith("<")) {
+                htmlToMarkdown(content)
+            } else {
+                content
+            }
+        }
+        if (content is Map<*, *>) {
+            @Suppress("UNCHECKED_CAST")
+            return try {
+                extractText(content as Map<String, Any?>)
+            } catch (e: Exception) {
+                android.util.Log.e("PageEditor", "contentToMarkdown map error: ${e.message}")
+                ""
+            }
+        }
        return try {
            val json = gson.toJson(content)
+            if (json.isNotEmpty() && json != "null") {
                tiptapToMarkdown(json)
-        } catch (e: Exception) {
-            content.toString()
+            } else {
+                ""
            }
+        } catch (e: Exception) {
+            android.util.Log.e("PageEditor", "contentToMarkdown error: ${e.message}")
+            ""
+        }
+    }
+
+    private fun htmlToMarkdown(html: String): String {
+        return html
+            .replace(Regex("<h1[^>]*>(.*?)</h1>", RegexOption.DOT_MATCHES_ALL)) { "# ${it.groupValues[1].trim()}\n\n" }
+            .replace(Regex("<h2[^>]*>(.*?)</h2>", RegexOption.DOT_MATCHES_ALL)) { "## ${it.groupValues[1].trim()}\n\n" }
+            .replace(Regex("<h3[^>]*>(.*?)</h3>", RegexOption.DOT_MATCHES_ALL)) { "### ${it.groupValues[1].trim()}\n\n" }
+            .replace(Regex("<h4[^>]*>(.*?)</h4>", RegexOption.DOT_MATCHES_ALL)) { "#### ${it.groupValues[1].trim()}\n\n" }
+            .replace(Regex("<h5[^>]*>(.*?)</h5>", RegexOption.DOT_MATCHES_ALL)) { "##### ${it.groupValues[1].trim()}\n\n" }
+            .replace(Regex("<h6[^>]*>(.*?)</h6>", RegexOption.DOT_MATCHES_ALL)) { "###### ${it.groupValues[1].trim()}\n\n" }
+            .replace(Regex("<strong[^>]*>(.*?)</strong>", RegexOption.DOT_MATCHES_ALL)) { "**${it.groupValues[1]}**" }
+            .replace(Regex("<b[^>]*>(.*?)</b>", RegexOption.DOT_MATCHES_ALL)) { "**${it.groupValues[1]}**" }
+            .replace(Regex("<em[^>]*>(.*?)</em>", RegexOption.DOT_MATCHES_ALL)) { "*${it.groupValues[1]}*" }
+            .replace(Regex("<i[^>]*>(.*?)</i>", RegexOption.DOT_MATCHES_ALL)) { "*${it.groupValues[1]}*" }
+            .replace(Regex("<del[^>]*>(.*?)</del>", RegexOption.DOT_MATCHES_ALL)) { "~~${it.groupValues[1]}~~" }
+            .replace(Regex("<code[^>]*>(.*?)</code>", RegexOption.DOT_MATCHES_ALL)) { "`${it.groupValues[1]}`" }
+            .replace(Regex("<a[^>]*href=\"([^\"]+)\"[^>]*>(.*?)</a>", RegexOption.DOT_MATCHES_ALL)) { "[${it.groupValues[2]}](${it.groupValues[1]})" }
+            .replace(Regex("<img[^>]*src=\"([^\"]+)\"[^>]*alt=\"([^\"]*)\"[^>]*/?>", RegexOption.DOT_MATCHES_ALL)) { "![${it.groupValues[2]}](${it.groupValues[1]})" }
+            .replace(Regex("<img[^>]*alt=\"([^\"]*)\"[^>]*src=\"([^\"]+)\"[^>]*/?>", RegexOption.DOT_MATCHES_ALL)) { "![${it.groupValues[1]}](${it.groupValues[2]})" }
+            .replace(Regex("<li[^>]*>(.*?)</li>", RegexOption.DOT_MATCHES_ALL)) { "- ${it.groupValues[1].replace(Regex("<[^>]*>"), "").trim()}\n" }
+            .replace(Regex("<blockquote[^>]*>(.*?)</blockquote>", RegexOption.DOT_MATCHES_ALL)) { "> ${it.groupValues[1].replace(Regex("<[^>]*>"), "").trim()}\n\n" }
+            .replace(Regex("<pre[^>]*><code[^>]*>(.*?)</code></pre>", RegexOption.DOT_MATCHES_ALL)) { "```\n${it.groupValues[1].replace(Regex("<[^>]*>"), "")}\n```\n\n" }
+            .replace(Regex("<p[^>]*>(.*?)</p>", RegexOption.DOT_MATCHES_ALL)) { "${it.groupValues[1].replace(Regex("<[^>]*>"), "").trim()}\n\n" }
+            .replace(Regex("<br[^>]*/?>", RegexOption.DOT_MATCHES_ALL)) { "\n" }
+            .replace(Regex("<hr[^>]*/?>", RegexOption.DOT_MATCHES_ALL)) { "---\n\n" }
+            .replace(Regex("<[^>]*>"), "")
+            .replace("&amp;", "&")
+            .replace("&lt;", "<")
+            .replace("&gt;", ">")
+            .replace("&quot;", "\"")
+            .replace("&nbsp;", " ")
+            .replace(Regex("\n{3,}"), "\n\n")
+            .trim()
    }

    private fun markdownToTipTap(markdown: String): String {
--- a/app/src/main/java/com/docmost/app/ui/SpacesActivity.kt
+++ b/app/src/main/java/com/docmost/app/ui/SpacesActivity.kt
@@ -54,7 +54,6 @@ import com.docmost.app.utils.NetworkConnectivityObserver
 import com.docmost.app.utils.NetworkStatus
 import com.docmost.app.databinding.ActivitySpacesBinding
 import com.google.gson.Gson
-import com.google.gson.reflect.TypeToken
 import com.google.android.material.bottomsheet.BottomSheetDialog
 import com.google.android.material.dialog.MaterialAlertDialogBuilder
 import com.google.android.material.tabs.TabLayout
@@ -909,8 +908,8 @@ class SpacesActivity : AppCompatActivity() {
    private fun loadRecentCache(): List<Page>? {
        try {
            val json = prefs.getString("recent_cache", null) ?: return null
-            val type = object : TypeToken<List<Page>>() {}.type
-            return gson.fromJson(json, type)
+            val array = com.google.gson.JsonParser.parseString(json).asJsonArray
+            return array.map { gson.fromJson(it, Page::class.java) }
        } catch (_: Exception) { return null }
    }

--- a/app/src/main/java/com/docmost/app/utils/ContentConverter.kt
+++ b/app/src/main/java/com/docmost/app/utils/ContentConverter.kt
@@ -1,16 +1,16 @@
 package com.docmost.app.utils

 import com.google.gson.Gson
-import com.google.gson.reflect.TypeToken
+import com.google.gson.JsonObject

 object ContentConverter {
    private val gson = Gson()

    fun tipTapJsonToHtml(tipTapJson: String): String {
        return try {
-            val mapType = object : TypeToken<Map<String, Any?>>() {}.type
-            val doc = gson.fromJson<Map<String, Any?>>(tipTapJson, mapType)
-            nodeToHtml(doc)
+            val doc = gson.fromJson(tipTapJson, JsonObject::class.java).asMap()
+            @Suppress("UNCHECKED_CAST")
+            nodeToHtml(doc as Map<String, Any?>)
        } catch (e: Exception) {
            tipTapJson
        }
@@ -18,9 +18,9 @@ object ContentConverter {

    fun tipTapToHtml(tipTapJson: String): String {
        return try {
-            val mapType = object : TypeToken<Map<String, Any?>>() {}.type
-            val doc = gson.fromJson<Map<String, Any?>>(tipTapJson, mapType)
-            nodeToHtml(doc)
+            val doc = gson.fromJson(tipTapJson, JsonObject::class.java).asMap()
+            @Suppress("UNCHECKED_CAST")
+            nodeToHtml(doc as Map<String, Any?>)
        } catch (e: Exception) {
            tipTapJson
        }
--- a/settings.gradle.kts
+++ b/settings.gradle.kts
@@ -14,3 +14,12 @@ dependencyResolutionManagement {

 rootProject.name = "Docmost"
 include(":app")
+
+val localBuildDir = "/tmp/android-build/Docmost"
+
+gradle.projectsLoaded {
+    rootProject.layout.buildDirectory.set(file(localBuildDir))
+    rootProject.subprojects.forEach { project ->
+        project.layout.buildDirectory.set(file("$localBuildDir/${project.name}"))
+    }
+}