106 lines
3.9 KiB
Kotlin
106 lines
3.9 KiB
Kotlin
package dev.inmo.micro_utils.repos
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import dev.inmo.micro_utils.pagination.*
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import dev.inmo.micro_utils.pagination.utils.paginate
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import dev.inmo.micro_utils.pagination.utils.reverse
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import kotlinx.coroutines.flow.*
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class MapReadOneToManyKeyValueRepo<Key, Value>(
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private val map: Map<Key, List<Value>> = emptyMap()
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) : ReadOneToManyKeyValueRepo<Key, Value> {
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override suspend fun get(k: Key, pagination: Pagination, reversed: Boolean): PaginationResult<Value> {
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val list = map[k] ?: return emptyPaginationResult()
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return list.paginate(
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if (reversed) {
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pagination.reverse(list.size)
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} else {
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pagination
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}
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)
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}
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override suspend fun keys(pagination: Pagination, reversed: Boolean): PaginationResult<Key> {
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val keys = map.keys
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val actualPagination = if (reversed) pagination.reverse(keys.size) else pagination
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return keys.paginate(actualPagination).let {
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if (reversed) {
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it.copy(results = it.results.reversed())
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} else {
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it
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}
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}
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}
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override suspend fun keys(v: Value, pagination: Pagination, reversed: Boolean): PaginationResult<Key> {
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val keys = map.keys.filter { map[it] ?.contains(v) == true }
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val actualPagination = if (reversed) pagination.reverse(keys.size) else pagination
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return keys.paginate(actualPagination).let {
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if (reversed) {
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it.copy(results = it.results.reversed())
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} else {
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it
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}
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}
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}
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override suspend fun contains(k: Key): Boolean = map.containsKey(k)
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override suspend fun contains(k: Key, v: Value): Boolean = map[k] ?.contains(v) == true
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override suspend fun count(k: Key): Long = map[k] ?.size ?.toLong() ?: 0L
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override suspend fun count(): Long = map.size.toLong()
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}
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class MapWriteOneToManyKeyValueRepo<Key, Value>(
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private val map: MutableMap<Key, MutableList<Value>> = mutableMapOf()
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) : WriteOneToManyKeyValueRepo<Key, Value> {
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private val _onNewValue: MutableSharedFlow<Pair<Key, Value>> = MutableSharedFlow()
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override val onNewValue: Flow<Pair<Key, Value>> = _onNewValue.asSharedFlow()
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private val _onValueRemoved: MutableSharedFlow<Pair<Key, Value>> = MutableSharedFlow()
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override val onValueRemoved: Flow<Pair<Key, Value>> = _onValueRemoved.asSharedFlow()
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private val _onDataCleared: MutableSharedFlow<Key> = MutableSharedFlow()
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override val onDataCleared: Flow<Key> = _onDataCleared.asSharedFlow()
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override suspend fun add(toAdd: Map<Key, List<Value>>) {
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toAdd.keys.forEach { k ->
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if (map.getOrPut(k) { mutableListOf() }.addAll(toAdd[k] ?: return@forEach)) {
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toAdd[k] ?.forEach { v ->
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_onNewValue.emit(k to v)
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}
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}
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}
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}
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override suspend fun remove(toRemove: Map<Key, List<Value>>) {
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toRemove.keys.forEach { k ->
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if (map[k] ?.removeAll(toRemove[k] ?: return@forEach) == true) {
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toRemove[k] ?.forEach { v ->
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_onValueRemoved.emit(k to v)
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}
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}
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}
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}
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override suspend fun clear(k: Key) {
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map.remove(k) ?.also { _onDataCleared.emit(k) }
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}
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override suspend fun clearWithValue(v: Value) {
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map.forEach { (k, values) ->
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if (values.remove(v)) _onValueRemoved.emit(k to v)
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}
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}
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}
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class MapOneToManyKeyValueRepo<Key, Value>(
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private val map: MutableMap<Key, MutableList<Value>> = mutableMapOf()
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) : OneToManyKeyValueRepo<Key, Value>,
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ReadOneToManyKeyValueRepo<Key, Value> by MapReadOneToManyKeyValueRepo(map),
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WriteOneToManyKeyValueRepo<Key, Value> by MapWriteOneToManyKeyValueRepo(map)
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fun <K, V> MutableMap<K, List<V>>.asOneToManyKeyValueRepo(): OneToManyKeyValueRepo<K, V> = MapOneToManyKeyValueRepo(
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map { (k, v) -> k to v.toMutableList() }.toMap().toMutableMap()
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)
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