/*
 * Copyright (c) 2024 New Vector Ltd
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

package io.element.android.libraries.textcomposer.components.markdown

import android.text.SpannableString
import androidx.compose.runtime.Stable
import androidx.compose.runtime.getValue
import androidx.compose.runtime.mutableStateOf
import androidx.compose.runtime.setValue
import io.element.android.libraries.core.extensions.orEmpty

@Stable
class StableCharSequence(initialText: CharSequence = "") {
    private var value by mutableStateOf<SpannableString>(SpannableString(initialText))
    private var needsDisplaying by mutableStateOf(false)

    fun update(newText: CharSequence?, needsDisplaying: Boolean) {
        value = SpannableString(newText.orEmpty())
        this.needsDisplaying = needsDisplaying
    }

    fun value(): CharSequence = value
    fun needsDisplaying(): Boolean = needsDisplaying

    override fun toString(): String {
        return "StableCharSequence(value='$value', needsDisplaying=$needsDisplaying)"
    }
}
