refactor(chat/character): 댓글 리스트 화면에 ViewModel 도입 및 Fragment-Repository 직접 의존 제거

CharacterCommentListViewModel을 추가하여 댓글 조회/등록/삭제/신고 및 페이지네이션 로직을 ViewModel로 이전.
Fragment는 UI 업데이트와 사용자 입력 처리에 집중하도록 리팩토링.
Koin DI에 ViewModel 등록.

app/src/main/java/kr/co/vividnext/sodalive/chat/character/comment/CharacterCommentListFragment.kt

@@ -8,14 +8,12 @@ import android.view.LayoutInflater
 import android.view.View
 import android.view.ViewGroup
 import android.view.inputmethod.InputMethodManager
-import android.widget.Toast
+import androidx.appcompat.app.AlertDialog
 import androidx.recyclerview.widget.LinearLayoutManager
 import androidx.recyclerview.widget.RecyclerView
 import coil.load
 import coil.transform.CircleCropTransformation
 import com.google.android.material.bottomsheet.BottomSheetDialogFragment
-import io.reactivex.rxjava3.android.schedulers.AndroidSchedulers
-import io.reactivex.rxjava3.schedulers.Schedulers
 import kr.co.vividnext.sodalive.R
 import kr.co.vividnext.sodalive.base.BaseFragment
 import kr.co.vividnext.sodalive.common.LoadingDialog
@@ -28,7 +26,7 @@ class CharacterCommentListFragment : BaseFragment<FragmentCharacterCommentListBi
     FragmentCharacterCommentListBinding::inflate
 ) {
 
-    private val repository: CharacterCommentRepository by inject()
+    private val viewModel: CharacterCommentListViewModel by inject()
 
     private lateinit var imm: InputMethodManager
     private lateinit var loadingDialog: LoadingDialog
@@ -54,7 +52,7 @@ class CharacterCommentListFragment : BaseFragment<FragmentCharacterCommentListBi
         setupView()
         bindData()
         // 초기 로드
-        resetAndLoad()
+        viewModel.reset(characterId)
     }
 
     private fun hideDialog() {
@@ -75,31 +73,8 @@ class CharacterCommentListFragment : BaseFragment<FragmentCharacterCommentListBi
             hideKeyboard()
             val comment = binding.etComment.text.toString()
             if (comment.isBlank()) return@setOnClickListener
-            val token = "Bearer ${SharedPreferenceManager.token}"
-            loadingDialog.show(screenWidth)
-            val d = repository.createComment(characterId, comment, token)
-                .subscribeOn(Schedulers.io())
-                .observeOn(AndroidSchedulers.mainThread())
-                .doFinally { loadingDialog.dismiss() }
-                .subscribe({ resp ->
-                    if (resp.success) {
-                        binding.etComment.setText("")
-                        resetAndLoad()
-                    } else {
-                        Toast.makeText(
-                            requireContext(),
-                            resp.message ?: "요청 중 오류가 발생했습니다",
-                            Toast.LENGTH_SHORT
-                        ).show()
-                    }
-                }, { e ->
-                    Toast.makeText(
-                        requireContext(),
-                        e.message ?: "요청 중 오류가 발생했습니다",
-                        Toast.LENGTH_SHORT
-                    ).show()
-                })
-            compositeDisposable.add(d)
+            viewModel.createComment(characterId, comment)
+            binding.etComment.setText("")
         }
 
         adapter = CharacterCommentsAdapter(
@@ -109,74 +84,20 @@ class CharacterCommentListFragment : BaseFragment<FragmentCharacterCommentListBi
                     onReport = {
                         val reportSheet = CharacterCommentReportBottomSheet.newInstance()
                         reportSheet.onSubmit = { reason ->
-                            val token = "Bearer ${SharedPreferenceManager.token}"
-                            val d =
-                                repository.reportComment(characterId, item.commentId, reason, token)
-                                    .subscribeOn(Schedulers.io())
-                                    .observeOn(AndroidSchedulers.mainThread())
-                                    .subscribe({ resp ->
-                                        if (resp.success) {
-                                            Toast.makeText(
-                                                requireContext(),
-                                                "신고가 접수되었습니다.",
-                                                Toast.LENGTH_SHORT
-                                            ).show()
-                                        } else {
-                                            Toast.makeText(
-                                                requireContext(),
-                                                resp.message ?: "요청 중 오류가 발생했습니다",
-                                                Toast.LENGTH_SHORT
-                                            ).show()
-                                        }
-                                    }, { e ->
-                                        Toast.makeText(
-                                            requireContext(),
-                                            e.message ?: "요청 중 오류가 발생했습니다",
-                                            Toast.LENGTH_SHORT
-                                        ).show()
-                                    })
-                            compositeDisposable.add(d)
+                            viewModel.reportComment(characterId, item.commentId, reason)
                         }
                         reportSheet.show(parentFragmentManager, "comment_report")
                     }
                     onDelete = {
                         // 삭제 확인 팝업
-                        androidx.appcompat.app.AlertDialog.Builder(requireContext())
+                        AlertDialog.Builder(requireContext())
                             .setTitle(getString(R.string.confirm_delete_title))
                             .setMessage(getString(R.string.confirm_delete_message))
                             .setPositiveButton(getString(R.string.confirm)) { _, _ ->
-                                val token = "Bearer ${SharedPreferenceManager.token}"
-                                loadingDialog.show(screenWidth)
-                                val d = repository.deleteComment(
+                                viewModel.deleteComment(
                                     characterId = characterId,
-                                    commentId = item.commentId,
-                                    token = token
+                                    commentId = item.commentId
                                 )
-                                    .subscribeOn(Schedulers.io())
-                                    .observeOn(AndroidSchedulers.mainThread())
-                                    .doFinally { loadingDialog.dismiss() }
-                                    .subscribe({ resp ->
-                                        if (resp.success) {
-                                            val index = adapter.items.indexOfFirst { it.commentId == item.commentId }
-                                            if (index >= 0) {
-                                                adapter.items.removeAt(index)
-                                                adapter.notifyItemRemoved(index)
-                                            }
-                                        } else {
-                                            Toast.makeText(
-                                                requireContext(),
-                                                resp.message ?: "요청 중 오류가 발생했습니다",
-                                                Toast.LENGTH_SHORT
-                                            ).show()
-                                        }
-                                    }, { e ->
-                                        Toast.makeText(
-                                            requireContext(),
-                                            e.message ?: "요청 중 오류가 발생했습니다",
-                                            Toast.LENGTH_SHORT
-                                        ).show()
-                                    })
-                                compositeDisposable.add(d)
                             }
                             .setNegativeButton(getString(R.string.cancel), null)
                             .show()
@@ -229,13 +150,11 @@ class CharacterCommentListFragment : BaseFragment<FragmentCharacterCommentListBi
         recyclerView.addOnScrollListener(object : RecyclerView.OnScrollListener() {
             override fun onScrolled(recyclerView: RecyclerView, dx: Int, dy: Int) {
                 super.onScrolled(recyclerView, dx, dy)
-                val lastVisible =
-                    (recyclerView.layoutManager as LinearLayoutManager).findLastCompletelyVisibleItemPosition()
+                val lastVisible = (recyclerView.layoutManager as LinearLayoutManager)
+                        .findLastCompletelyVisibleItemPosition()
                 val total = recyclerView.adapter?.itemCount ?: 0
-                // 초기 진입(아이템 없음) 또는 다음 페이지가 존재할 때(cursor != null)에만 로드
-                val canLoadMore = adapter.items.isEmpty() || cursor != null
-                if (canLoadMore && !recyclerView.canScrollVertically(1) && lastVisible == total - 1) {
-                    loadMore()
+                if (!recyclerView.canScrollVertically(1) && lastVisible == total - 1) {
+                    viewModel.getCommentList(characterId)
                 }
             }
         })
@@ -245,57 +164,37 @@ class CharacterCommentListFragment : BaseFragment<FragmentCharacterCommentListBi
 
     @SuppressLint("NotifyDataSetChanged")
     private fun bindData() {
-        // total count 스텁: 어댑터 크기 사용
-        // 필요 시 ViewModel 도입 가능
+        viewModel.isLoading.observe(viewLifecycleOwner) {
+            if (it) {
+                loadingDialog.show(screenWidth)
+            } else {
+                loadingDialog.dismiss()
+            }
+        }
+
+        viewModel.toastLiveData.observe(viewLifecycleOwner) { msg ->
+
+            msg?.let { showToast(it) }
+        }
+
+        viewModel.totalCommentCount.observe(viewLifecycleOwner) { count ->
+            binding.tvCommentCount.text = "$count"
+        }
+
+        viewModel.commentList.observe(viewLifecycleOwner) { items ->
+            if (viewModel.page - 1 == 1) {
+                adapter.items.clear()
+                binding.rvComment.scrollToPosition(0)
+            }
+            adapter.items.addAll(items)
+            adapter.notifyDataSetChanged()
+        }
     }
 
     private fun hideKeyboard() {
         imm.hideSoftInputFromWindow(view?.windowToken, 0)
     }
 
-    private var cursor: Long? = null
-    private var isLoading = false
-
-    @SuppressLint("NotifyDataSetChanged")
-    private fun resetAndLoad() {
-        cursor = null
-        adapter.items.clear()
-        adapter.notifyDataSetChanged()
-        loadMore()
-    }
-
-    private fun loadMore() {
-        if (isLoading) return
-        // 초기 로드(아이템 없음)는 허용. 그 외에는 cursor가 null이면 더 이상 로드하지 않음
-        if (adapter.items.isNotEmpty() && cursor == null) return
-        val token = "Bearer ${SharedPreferenceManager.token}"
-        isLoading = true
-        val d = repository.listComments(characterId, 20, cursor, token)
-            .subscribeOn(Schedulers.io())
-            .observeOn(AndroidSchedulers.mainThread())
-            .doFinally { isLoading = false }
-            .subscribe({ resp ->
-                if (resp.success) {
-                    val data = resp.data
-                    val items = data?.comments ?: emptyList()
-                    val start = adapter.items.size
-                    adapter.items.addAll(items)
-                    adapter.notifyItemRangeInserted(start, items.size)
-                    binding.tvCommentCount.text = data?.totalCount?.toString() ?: "0"
-                    cursor = data?.cursor
-                } else {
-                    Toast.makeText(
-                        requireContext(),
-                        resp.message ?: "요청 중 오류가 발생했습니다",
-                        Toast.LENGTH_SHORT
-                    ).show()
-                }
-            }, { e ->
-                Toast.makeText(requireContext(), e.message ?: "요청 중 오류가 발생했습니다", Toast.LENGTH_SHORT)
-                    .show()
-            })
-        compositeDisposable.add(d)
-    }
 
     companion object {
         private const val EXTRA_CHARACTER_ID = "extra_character_id"

app/src/main/java/kr/co/vividnext/sodalive/chat/character/comment/CharacterCommentListViewModel.kt

@@ -0,0 +1,197 @@
+package kr.co.vividnext.sodalive.chat.character.comment
+
+import androidx.lifecycle.LiveData
+import androidx.lifecycle.MutableLiveData
+import com.orhanobut.logger.Logger
+import io.reactivex.rxjava3.android.schedulers.AndroidSchedulers
+import io.reactivex.rxjava3.schedulers.Schedulers
+import kr.co.vividnext.sodalive.base.BaseViewModel
+import kr.co.vividnext.sodalive.common.SharedPreferenceManager
+
+class CharacterCommentListViewModel(
+    private val repository: CharacterCommentRepository
+) : BaseViewModel() {
+
+    private val _toastLiveData = MutableLiveData<String?>()
+    val toastLiveData: LiveData<String?>
+        get() = _toastLiveData
+
+    private val _isLoading = MutableLiveData(false)
+    val isLoading: LiveData<Boolean>
+        get() = _isLoading
+
+    private val _commentList = MutableLiveData<List<CharacterCommentResponse>>()
+    val commentList: LiveData<List<CharacterCommentResponse>>
+        get() = _commentList
+
+    private val _totalCommentCount = MutableLiveData(0)
+    val totalCommentCount: LiveData<Int>
+        get() = _totalCommentCount
+
+    // 페이지네이션 상태 (cursor 기반이지만 UI에선 1페이지 초기화 판단을 위해 page 인덱스 유지)
+    var page: Int = 1
+        private set
+    private var isLast: Boolean = false
+    private val size: Int = 20
+    private var cursor: Long? = null
+
+    fun reset(characterId: Long) {
+        page = 1
+        isLast = false
+        cursor = null
+        getCommentList(characterId)
+    }
+
+    fun getCommentList(characterId: Long, onFailure: (() -> Unit)? = null) {
+        // 로딩 중이면 차단
+        if (_isLoading.value == true) return
+        // 이슈 요구사항: 초기 1회 로드 허용, 이후엔 cursor != null일 때만 추가 로드
+        if (page > 1 && cursor == null) return
+        // 이미 마지막이면 차단 (보조 안전장치)
+        if (isLast) return
+
+        _isLoading.value = true
+
+        val token = "Bearer ${SharedPreferenceManager.token}"
+        compositeDisposable.add(
+            repository.listComments(
+                characterId = characterId,
+                limit = size,
+                cursor = cursor,
+                token = token
+            )
+                .subscribeOn(Schedulers.io())
+                .observeOn(AndroidSchedulers.mainThread())
+                .subscribe({ resp ->
+                    _isLoading.value = false
+                    if (resp.success && resp.data != null) {
+                        // total count 업데이트
+                        _totalCommentCount.postValue(resp.data.totalCount)
+
+                        // 다음 페이지 커서 및 마지막 여부 갱신
+                        val nextCursor = resp.data.cursor
+                        cursor = nextCursor
+                        isLast = (nextCursor == null)
+
+                        // 페이지 인덱스 증가 (UI에서 초기화 판단용)
+                        page += 1
+
+                        val items = resp.data.comments
+                        // 응답 아이템 전달 (비어있어도 전달) — UI는 addAll 처리
+                        _commentList.postValue(items)
+                    } else {
+                        val message = resp.message ?: "알 수 없는 오류가 발생했습니다. 다시 시도해 주세요."
+                        _toastLiveData.postValue(message)
+                        onFailure?.invoke()
+                    }
+                }, { e ->
+                    _isLoading.value = false
+                    Logger.e(e, "Character comments load failed")
+                    _toastLiveData.postValue("알 수 없는 오류가 발생했습니다. 다시 시도해 주세요.")
+                    onFailure?.invoke()
+                })
+        )
+    }
+
+    fun createComment(characterId: Long, comment: String) {
+        if (comment.isBlank()) {
+            _toastLiveData.postValue("내용을 입력하세요")
+            return
+        }
+        if (_isLoading.value == true) return
+        _isLoading.value = true
+
+        val token = "Bearer ${SharedPreferenceManager.token}"
+        compositeDisposable.add(
+            repository.createComment(
+                characterId = characterId,
+                comment = comment,
+                token = token
+            )
+                .subscribeOn(Schedulers.io())
+                .observeOn(AndroidSchedulers.mainThread())
+                .subscribe({ resp ->
+                    _isLoading.value = false
+                    if (resp.success) {
+                        // 목록 초기화 후 재조회
+                        page = 1
+                        isLast = false
+                        cursor = null
+                        getCommentList(characterId)
+                    } else {
+                        val message = resp.message ?: "알 수 없는 오류가 발생했습니다. 다시 시도해 주세요."
+                        _toastLiveData.postValue(message)
+                    }
+                }, { e ->
+                    _isLoading.value = false
+                    Logger.e(e, "Character comment create failed")
+                    _toastLiveData.postValue("알 수 없는 오류가 발생했습니다. 다시 시도해 주세요.")
+                })
+        )
+    }
+
+    fun deleteComment(characterId: Long, commentId: Long) {
+        if (_isLoading.value == true) return
+        _isLoading.value = true
+        val token = "Bearer ${SharedPreferenceManager.token}"
+        compositeDisposable.add(
+            repository.deleteComment(
+                characterId = characterId,
+                commentId = commentId,
+                token = token
+            )
+                .subscribeOn(Schedulers.io())
+                .observeOn(AndroidSchedulers.mainThread())
+                .subscribe({ resp ->
+                    _isLoading.value = false
+                    if (resp.success) {
+                        // 간단하게 전체를 새로고침
+                        page = 1
+                        isLast = false
+                        cursor = null
+                        getCommentList(characterId)
+                    } else {
+                        val message = resp.message ?: "알 수 없는 오류가 발생했습니다. 다시 시도해 주세요."
+                        _toastLiveData.postValue(message)
+                    }
+                }, { e ->
+                    _isLoading.value = false
+                    Logger.e(e, "Character comment delete failed")
+                    _toastLiveData.postValue("알 수 없는 오류가 발생했습니다. 다시 시도해 주세요.")
+                })
+        )
+    }
+
+    fun reportComment(characterId: Long, commentId: Long, reason: String) {
+        if (reason.isBlank()) {
+            _toastLiveData.postValue("신고 사유를 입력하세요")
+            return
+        }
+        if (_isLoading.value == true) return
+        _isLoading.value = true
+        val token = "Bearer ${SharedPreferenceManager.token}"
+        compositeDisposable.add(
+            repository.reportComment(
+                characterId = characterId,
+                commentId = commentId,
+                reason = reason,
+                token = token
+            )
+                .subscribeOn(Schedulers.io())
+                .observeOn(AndroidSchedulers.mainThread())
+                .subscribe({ resp ->
+                    _isLoading.value = false
+                    if (resp.success) {
+                        _toastLiveData.postValue("신고가 접수되었습니다.")
+                    } else {
+                        val message = resp.message ?: "알 수 없는 오류가 발생했습니다. 다시 시도해 주세요."
+                        _toastLiveData.postValue(message)
+                    }
+                }, { e ->
+                    _isLoading.value = false
+                    Logger.e(e, "Character comment report failed")
+                    _toastLiveData.postValue("알 수 없는 오류가 발생했습니다. 다시 시도해 주세요.")
+                })
+        )
+    }
+}

app/src/main/java/kr/co/vividnext/sodalive/di/AppDI.kt

@@ -359,6 +359,7 @@ class AppDI(private val context: Context, isDebugMode: Boolean) {
         viewModel { CharacterTabViewModel(get()) }
         viewModel { CharacterDetailViewModel(get()) }
         viewModel { TalkTabViewModel(get()) }
+        viewModel { kr.co.vividnext.sodalive.chat.character.comment.CharacterCommentListViewModel(get()) }
     }
 
     private val repositoryModule = module {