package com.swmansion.rnscreens.bottomsheet

import android.view.View
import com.google.android.material.bottomsheet.BottomSheetBehavior

internal fun <T : View> BottomSheetBehavior<T>.updateMetrics(
    maxAllowedHeight: Int? = null,
    expandedOffsetFromTop: Int? = null,
): BottomSheetBehavior<T> {
    maxAllowedHeight?.let {
        this.maxHeight = maxAllowedHeight
    }
    expandedOffsetFromTop?.let {
        this.expandedOffset = expandedOffsetFromTop
    }
    return this
}

internal fun <T : View> BottomSheetBehavior<T>.useSingleDetent(
    maxAllowedHeight: Int? = null,
    forceExpandedState: Boolean = true,
    enableManualInsetsAdjustmentWorkaround: Boolean? = null,
): BottomSheetBehavior<T> {
    this.skipCollapsed = true
    this.isFitToContents = true
    if (forceExpandedState) {
        this.state = BottomSheetBehavior.STATE_EXPANDED
    }
    maxAllowedHeight?.let {
        this.maxHeight = maxAllowedHeight
    }
    maybeApplyManualInsetsAdjustmentWorkaround(enableManualInsetsAdjustmentWorkaround)
    return this
}

internal fun <T : View> BottomSheetBehavior<T>.useTwoDetents(
    @BottomSheetBehavior.StableState state: Int? = null,
    firstHeight: Int? = null,
    maxAllowedHeight: Int? = null,
    enableManualInsetsAdjustmentWorkaround: Boolean? = null,
): BottomSheetBehavior<T> {
    this.skipCollapsed = false
    this.isFitToContents = true
    state?.let { this.state = state }
    firstHeight?.let { this.peekHeight = firstHeight }
    maxAllowedHeight?.let { this.maxHeight = maxAllowedHeight }
    maybeApplyManualInsetsAdjustmentWorkaround(enableManualInsetsAdjustmentWorkaround)
    return this
}

internal fun <T : View> BottomSheetBehavior<T>.useThreeDetents(
    @BottomSheetBehavior.StableState state: Int? = null,
    firstHeight: Int? = null,
    maxAllowedHeight: Int? = null,
    halfExpandedRatio: Float? = null,
    expandedOffsetFromTop: Int? = null,
    enableManualInsetsAdjustmentWorkaround: Boolean? = null,
): BottomSheetBehavior<T> {
    this.skipCollapsed = false
    this.isFitToContents = false
    state?.let { this.state = state }
    firstHeight?.let { this.peekHeight = firstHeight }
    halfExpandedRatio?.let { this.halfExpandedRatio = halfExpandedRatio }
    expandedOffsetFromTop?.let { this.expandedOffset = expandedOffsetFromTop }
    maxAllowedHeight?.let { this.maxHeight = maxAllowedHeight }
    maybeApplyManualInsetsAdjustmentWorkaround(enableManualInsetsAdjustmentWorkaround)
    return this
}

private fun <T : View> BottomSheetBehavior<T>.maybeApplyManualInsetsAdjustmentWorkaround(enableManualInsetsAdjustmentWorkaround: Boolean?) {
    /**
     * WORKAROUND: We manually control 'isGestureInsetBottomIgnored' to bypass the internal
     * 'setWindowInsetsListener' logic in BottomSheetBehavior.
     *
     * The default implementation of 'setWindowInsetsListener' performs wide-ranging
     * adjustments, including calculating 'insetTop' from system bars. This internal
     * 'insetTop' value can trigger unwanted top padding during the layout pass.
     *
     * By using the 'sheetShouldOverflowTopInset' prop, we're taking full responsibility for
     * handling both status bar coverage and avoidance. Enabling this workaround
     * prevents the system from interfering with our custom overflow logic,
     * ensuring the sheet renders correctly in both states.
     */
    enableManualInsetsAdjustmentWorkaround?.let {
        this.isGestureInsetBottomIgnored = it
    }
}

internal fun <T : View> BottomSheetBehavior<T>.fitToContentsSheetHeight(): Int {
    // In fitToContents only a single detent is allowed, and the actual
    // sheet height is stored in this field.
    return this.maxHeight
}