Add dialog to choose who to buy resources from

Resolves:
https://github.com/joffrey-bion/seven-wonders/issues/50

9 files changed, 302 insertions, 92 deletions

diff --git a/sw-ui/src/main/kotlin/com/palantir/blueprintjs/blueprintjsHelpers.kt b/sw-ui/src/main/kotlin/com/palantir/blueprintjs/blueprintjsHelpers.kt
index b74e984d..0bd126fd 100644
--- a/sw-ui/src/main/kotlin/com/palantir/blueprintjs/blueprintjsHelpers.kt
+++ b/sw-ui/src/main/kotlin/com/palantir/blueprintjs/blueprintjsHelpers.kt
@@ -1,13 +1,12 @@
 package com.palantir.blueprintjs
 
-import kotlinext.js.js
 import org.w3c.dom.events.Event
 import org.w3c.dom.events.MouseEvent
 import react.RBuilder
 import react.RHandler
 import react.ReactElement
 import react.buildElement
-import react.dom.*
+import react.dom.h2
 
 typealias IconName = String
 
diff --git a/sw-ui/src/main/kotlin/org/luxons/sevenwonders/ui/components/game/GameScene.kt b/sw-ui/src/main/kotlin/org/luxons/sevenwonders/ui/components/game/GameScene.kt
index fbd6d8c5..bab6fe81 100644
--- a/sw-ui/src/main/kotlin/org/luxons/sevenwonders/ui/components/game/GameScene.kt
+++ b/sw-ui/src/main/kotlin/org/luxons/sevenwonders/ui/components/game/GameScene.kt
@@ -1,38 +1,18 @@
 package org.luxons.sevenwonders.ui.components.game
 
-import com.palantir.blueprintjs.Elevation
-import com.palantir.blueprintjs.Intent
-import com.palantir.blueprintjs.bpButton
-import com.palantir.blueprintjs.bpButtonGroup
-import com.palantir.blueprintjs.bpCallout
-import com.palantir.blueprintjs.bpCard
-import com.palantir.blueprintjs.bpNonIdealState
-import com.palantir.blueprintjs.bpOverlay
+import com.palantir.blueprintjs.*
 import kotlinx.css.*
-import kotlinx.css.properties.*
+import kotlinx.css.properties.transform
+import kotlinx.css.properties.translate
 import kotlinx.html.DIV
-import org.luxons.sevenwonders.model.Action
-import org.luxons.sevenwonders.model.PlayerMove
-import org.luxons.sevenwonders.model.PlayerTurnInfo
+import org.luxons.sevenwonders.model.*
 import org.luxons.sevenwonders.model.api.PlayerDTO
 import org.luxons.sevenwonders.model.boards.Board
 import org.luxons.sevenwonders.model.boards.RelativeBoardPosition
 import org.luxons.sevenwonders.model.cards.HandCard
-import org.luxons.sevenwonders.model.getBoard
-import org.luxons.sevenwonders.model.getOwnBoard
 import org.luxons.sevenwonders.ui.components.GlobalStyles
-import org.luxons.sevenwonders.ui.redux.GameState
-import org.luxons.sevenwonders.ui.redux.RequestLeaveGame
-import org.luxons.sevenwonders.ui.redux.RequestPrepareMove
-import org.luxons.sevenwonders.ui.redux.RequestSayReady
-import org.luxons.sevenwonders.ui.redux.RequestUnprepareMove
-import org.luxons.sevenwonders.ui.redux.connectStateAndDispatch
-import react.RBuilder
-import react.RClass
-import react.RComponent
-import react.RProps
-import react.RState
-import react.ReactElement
+import org.luxons.sevenwonders.ui.redux.*
+import react.*
 import styled.StyledDOMBuilder
 import styled.css
 import styled.getClassName
@@ -50,6 +30,8 @@ interface GameSceneDispatchProps : RProps {
     var sayReady: () -> Unit
     var prepareMove: (move: PlayerMove) -> Unit
     var unprepareMove: () -> Unit
+    var startTransactionsSelection: (TransactionSelectorState) -> Unit
+    var cancelTransactionsSelection: () -> Unit
     var leaveGame: () -> Unit
 }
 
@@ -92,9 +74,14 @@ private class GameScene(props: GameSceneProps) : RComponent<GameSceneProps, RSta
                     height = 100.pct
                 }
             }
+            transactionsSelectorDialog(
+                state = props.gameState?.transactionSelector,
+                prepareMove = props.prepareMove,
+                cancelTransactionSelection = props.cancelTransactionsSelection,
+            )
             boardSummaries(leftBoard, rightBoard, topBoards)
             handRotationIndicator(turnInfo.table.handRotationDirection)
-            handCards(turnInfo, props.preparedMove, props.prepareMove)
+            handCards(turnInfo, props.preparedMove, props.prepareMove, props.startTransactionsSelection)
             val card = props.preparedCard
             val move = props.preparedMove
             if (card != null && move != null) {
@@ -235,6 +222,8 @@ private val gameScene: RClass<GameSceneProps> =
         mapDispatchToProps = { dispatch, _ ->
             prepareMove = { move -> dispatch(RequestPrepareMove(move)) }
             unprepareMove = { dispatch(RequestUnprepareMove()) }
+            startTransactionsSelection = { selector -> dispatch(StartTransactionSelection(selector)) }
+            cancelTransactionsSelection = { dispatch(CancelTransactionSelection) }
             sayReady = { dispatch(RequestSayReady()) }
             leaveGame = { dispatch(RequestLeaveGame()) }
         },
diff --git a/sw-ui/src/main/kotlin/org/luxons/sevenwonders/ui/components/game/GameStyles.kt b/sw-ui/src/main/kotlin/org/luxons/sevenwonders/ui/components/game/GameStyles.kt
index b2e12dab..e69bc671 100644
--- a/sw-ui/src/main/kotlin/org/luxons/sevenwonders/ui/components/game/GameStyles.kt
+++ b/sw-ui/src/main/kotlin/org/luxons/sevenwonders/ui/components/game/GameStyles.kt
@@ -6,8 +6,10 @@ import styled.StyleSheet
 
 object GameStyles : StyleSheet("GameStyles", isStatic = true) {
 
+    private val sandColor = Color.paleGoldenrod.withAlpha(0.7)
+
     val fullBoardPreviewPopover by css {
-        val bgColor = Color.paleGoldenrod.withAlpha(0.7)
+        val bgColor = sandColor
         backgroundColor = bgColor
         borderRadius = 0.5.rem
         padding(all = 0.5.rem)
@@ -35,6 +37,14 @@ object GameStyles : StyleSheet("GameStyles", isStatic = true) {
         filter = "brightness(60%) grayscale(50%)"
     }
 
+    val transactionsSelector by css {
+        backgroundColor = sandColor
+
+        children(".bp3-dialog-header") {
+            background = "none" // overrides default white background
+        }
+    }
+
     val discardMoveText by css {
         display = Display.flex
         alignItems = Align.center
diff --git a/sw-ui/src/main/kotlin/org/luxons/sevenwonders/ui/components/game/Hand.kt b/sw-ui/src/main/kotlin/org/luxons/sevenwonders/ui/components/game/Hand.kt
index c8fb8d61..373ad0f1 100644
--- a/sw-ui/src/main/kotlin/org/luxons/sevenwonders/ui/components/game/Hand.kt
+++ b/sw-ui/src/main/kotlin/org/luxons/sevenwonders/ui/components/game/Hand.kt
@@ -1,28 +1,16 @@
 package org.luxons.sevenwonders.ui.components.game
 
-import com.palantir.blueprintjs.IButtonGroupProps
-import com.palantir.blueprintjs.IButtonProps
-import com.palantir.blueprintjs.IconName
-import com.palantir.blueprintjs.Intent
-import com.palantir.blueprintjs.bpButton
-import com.palantir.blueprintjs.bpButtonGroup
-import com.palantir.blueprintjs.bpIcon
+import com.palantir.blueprintjs.*
 import kotlinx.css.*
 import kotlinx.css.properties.*
 import kotlinx.html.DIV
-import org.luxons.sevenwonders.model.Action
-import org.luxons.sevenwonders.model.MoveType
-import org.luxons.sevenwonders.model.PlayerMove
-import org.luxons.sevenwonders.model.PlayerTurnInfo
+import org.luxons.sevenwonders.model.*
 import org.luxons.sevenwonders.model.cards.CardPlayability
 import org.luxons.sevenwonders.model.cards.HandCard
-import org.luxons.sevenwonders.model.getOwnBoard
+import org.luxons.sevenwonders.model.resources.PricedResourceTransactions
 import org.luxons.sevenwonders.model.wonders.WonderBuildability
-import react.RBuilder
-import react.RComponent
-import react.RElementBuilder
-import react.RProps
-import react.RState
+import org.luxons.sevenwonders.ui.redux.TransactionSelectorState
+import react.*
 import styled.StyledDOMBuilder
 import styled.css
 import styled.styledDiv
@@ -43,6 +31,7 @@ interface HandProps : RProps {
     var turnInfo: PlayerTurnInfo
     var preparedMove: PlayerMove?
     var prepareMove: (PlayerMove) -> Unit
+    var startTransactionsSelection: (TransactionSelectorState) -> Unit
 }
 
 class HandComponent(props: HandProps) : RComponent<HandProps, RState>(props) {
@@ -131,10 +120,7 @@ class HandComponent(props: HandProps) : RComponent<HandProps, RState>(props) {
             large = true,
             intent = Intent.SUCCESS,
             disabled = !card.playability.isPlayable,
-            onClick = {
-                val transactions = card.playability.cheapestTransactions.first()
-                props.prepareMove(PlayerMove(handAction.moveType, card.name, transactions))
-            },
+            onClick = { prepareMove(handAction.moveType, card, card.playability.cheapestTransactions) },
         ) {
             bpIcon(handAction.icon)
             if (card.playability.isPlayable && !card.playability.isFree) {
@@ -150,10 +136,7 @@ class HandComponent(props: HandProps) : RComponent<HandProps, RState>(props) {
             large = true,
             intent = Intent.PRIMARY,
             disabled = !wonderBuildability.isBuildable,
-            onClick = {
-                val transactions = wonderBuildability.cheapestTransactions.first()
-                props.prepareMove(PlayerMove(MoveType.UPGRADE_WONDER, card.name, transactions))
-            },
+            onClick = { prepareMove(MoveType.UPGRADE_WONDER, card, wonderBuildability.cheapestTransactions) },
         ) {
             bpIcon("key-shift")
             if (wonderBuildability.isBuildable && !wonderBuildability.isFree) {
@@ -162,6 +145,13 @@ class HandComponent(props: HandProps) : RComponent<HandProps, RState>(props) {
         }
     }
 
+    private fun prepareMove(moveType: MoveType, card: HandCard, transactions: Set<PricedResourceTransactions>) {
+        when (transactions.size) {
+            1 -> props.prepareMove(PlayerMove(moveType, card.name, transactions.first()))
+            else -> props.startTransactionsSelection(TransactionSelectorState(moveType, card, transactions))
+        }
+    }
+
     private fun RElementBuilder<IButtonGroupProps>.discardButton(card: HandCard) {
         bpButton(
             title = "DISCARD (+3 coins)", // TODO remove hardcoded value
@@ -266,12 +256,14 @@ fun RBuilder.handCards(
     turnInfo: PlayerTurnInfo,
     preparedMove: PlayerMove?,
     prepareMove: (PlayerMove) -> Unit,
+    startTransactionsSelection: (TransactionSelectorState) -> Unit,
 ) {
     child(HandComponent::class) {
         attrs {
             this.turnInfo = turnInfo
             this.preparedMove = preparedMove
             this.prepareMove = prepareMove
+            this.startTransactionsSelection = startTransactionsSelection
         }
     }
 }
diff --git a/sw-ui/src/main/kotlin/org/luxons/sevenwonders/ui/components/game/ProductionBar.kt b/sw-ui/src/main/kotlin/org/luxons/sevenwonders/ui/components/game/ProductionBar.kt
index 507883e7..c3cd9911 100644
--- a/sw-ui/src/main/kotlin/org/luxons/sevenwonders/ui/components/game/ProductionBar.kt
+++ b/sw-ui/src/main/kotlin/org/luxons/sevenwonders/ui/components/game/ProductionBar.kt
@@ -1,35 +1,14 @@
 package org.luxons.sevenwonders.ui.components.game
 
-import kotlinx.css.Align
-import kotlinx.css.BorderStyle
-import kotlinx.css.CSSBuilder
-import kotlinx.css.Color
-import kotlinx.css.Display
-import kotlinx.css.Position
-import kotlinx.css.VerticalAlign
-import kotlinx.css.alignItems
-import kotlinx.css.background
-import kotlinx.css.bottom
-import kotlinx.css.color
-import kotlinx.css.display
-import kotlinx.css.fontSize
-import kotlinx.css.height
-import kotlinx.css.margin
-import kotlinx.css.marginLeft
-import kotlinx.css.position
-import kotlinx.css.properties.*
-import kotlinx.css.px
-import kotlinx.css.rem
-import kotlinx.css.verticalAlign
-import kotlinx.css.vw
-import kotlinx.css.width
-import kotlinx.css.zIndex
+import kotlinx.css.*
+import kotlinx.css.properties.borderTop
+import kotlinx.css.properties.boxShadow
 import kotlinx.html.DIV
 import org.luxons.sevenwonders.model.boards.Production
 import org.luxons.sevenwonders.model.resources.CountedResource
 import org.luxons.sevenwonders.model.resources.ResourceType
 import react.RBuilder
-import react.dom.*
+import react.dom.key
 import styled.StyledDOMBuilder
 import styled.css
 import styled.styledDiv
@@ -53,7 +32,7 @@ private fun RBuilder.fixedResources(resources: List<CountedResource>) {
             display = Display.flex
         }
         resources.forEach {
-            tokenWithCount(tokenName = getResourceTokenName(it.type), count = it.count, imgSize = 3.rem) {
+            resourceWithCount(resourceType = it.type, count = it.count, imgSize = 3.rem) {
                 attrs { key = it.type.toString() }
                 css { marginLeft = 1.rem }
             }
@@ -84,7 +63,7 @@ private fun RBuilder.resourceChoice(types: Set<ResourceType>, block: StyledDOMBu
         }
         block()
         for ((i, t) in types.withIndex()) {
-            tokenImage(tokenName = getResourceTokenName(t), size = 3.rem) {
+            resourceImage(resourceType = t, size = 3.rem) {
                 attrs { this.key = t.toString() }
             }
             if (i < types.indices.last) {
@@ -97,8 +76,6 @@ private fun RBuilder.resourceChoice(types: Set<ResourceType>, block: StyledDOMBu
     }
 }
 
-private fun getResourceTokenName(resourceType: ResourceType) = "resources/${resourceType.toString().toLowerCase()}"
-
 private fun CSSBuilder.productionBarStyle() {
     alignItems = Align.center
     background = "linear-gradient(#eaeaea, #888 7%)"
diff --git a/sw-ui/src/main/kotlin/org/luxons/sevenwonders/ui/components/game/Tokens.kt b/sw-ui/src/main/kotlin/org/luxons/sevenwonders/ui/components/game/Tokens.kt
index 74dc232e..846a9f07 100644
--- a/sw-ui/src/main/kotlin/org/luxons/sevenwonders/ui/components/game/Tokens.kt
+++ b/sw-ui/src/main/kotlin/org/luxons/sevenwonders/ui/components/game/Tokens.kt
@@ -4,13 +4,14 @@ import kotlinx.css.*
 import kotlinx.html.DIV
 import kotlinx.html.IMG
 import kotlinx.html.title
+import org.luxons.sevenwonders.model.resources.ResourceType
 import org.luxons.sevenwonders.ui.components.GlobalStyles
 import react.RBuilder
-import styled.StyledDOMBuilder
-import styled.css
-import styled.styledDiv
-import styled.styledImg
-import styled.styledSpan
+import styled.*
+
+private fun getResourceTokenName(resourceType: ResourceType) = "resources/${resourceType.toString().toLowerCase()}"
+
+private fun getTokenImagePath(tokenName: String) = "/images/tokens/$tokenName.png"
 
 enum class TokenCountPosition {
     LEFT,
@@ -36,6 +37,37 @@ fun RBuilder.goldIndicator(
     )
 }
 
+fun RBuilder.resourceWithCount(
+    resourceType: ResourceType,
+    count: Int,
+    title: String = resourceType.toString(),
+    imgSize: LinearDimension? = null,
+    countPosition: TokenCountPosition = TokenCountPosition.RIGHT,
+    brightText: Boolean = false,
+    customCountStyle: CSSBuilder.() -> Unit = {},
+    block: StyledDOMBuilder<DIV>.() -> Unit = {},
+) {
+    tokenWithCount(
+        tokenName = getResourceTokenName(resourceType),
+        count = count,
+        title = title,
+        imgSize = imgSize,
+        countPosition = countPosition,
+        brightText = brightText,
+        customCountStyle = customCountStyle,
+        block = block
+    )
+}
+
+fun RBuilder.resourceImage(
+    resourceType: ResourceType,
+    title: String = resourceType.toString(),
+    size: LinearDimension?,
+    block: StyledDOMBuilder<IMG>.() -> Unit = {},
+) {
+    tokenImage(getResourceTokenName(resourceType), title, size, block)
+}
+
 fun RBuilder.tokenWithCount(
     tokenName: String,
     count: Int,
@@ -72,7 +104,11 @@ fun RBuilder.tokenWithCount(
             }
             TokenCountPosition.OVER -> {
                 styledDiv {
-                    css { position = Position.relative }
+                    css {
+                        position = Position.relative
+                        // if container becomes large, this one stays small so that children stay on top of each other
+                        width = LinearDimension.fitContent
+                    }
                     tokenImage(tokenName, title = title, size = imgSize)
                     styledSpan {
                         css {
@@ -109,8 +145,6 @@ fun RBuilder.tokenImage(
     }
 }
 
-private fun getTokenImagePath(tokenName: String) = "/images/tokens/$tokenName.png"
-
 private fun CSSBuilder.tokenCountStyle(
     size: LinearDimension,
     brightText: Boolean,
diff --git a/sw-ui/src/main/kotlin/org/luxons/sevenwonders/ui/components/game/TransactionsSelector.kt b/sw-ui/src/main/kotlin/org/luxons/sevenwonders/ui/components/game/TransactionsSelector.kt
new file mode 100644
index 00000000..e8b6cf8c
--- /dev/null
+++ b/sw-ui/src/main/kotlin/org/luxons/sevenwonders/ui/components/game/TransactionsSelector.kt
@@ -0,0 +1,193 @@
+package org.luxons.sevenwonders.ui.components.game
+
+import com.palantir.blueprintjs.*
+import kotlinx.css.*
+import kotlinx.html.DIV
+import kotlinx.html.TD
+import kotlinx.html.classes
+import kotlinx.html.js.onClickFunction
+import org.luxons.sevenwonders.model.PlayerMove
+import org.luxons.sevenwonders.model.resources.CountedResource
+import org.luxons.sevenwonders.model.resources.Provider
+import org.luxons.sevenwonders.model.resources.ResourceType
+import org.luxons.sevenwonders.ui.redux.TransactionSelectorState
+import react.RBuilder
+import react.dom.div
+import react.dom.p
+import react.dom.tbody
+import styled.*
+
+fun RBuilder.transactionsSelectorDialog(
+    state: TransactionSelectorState?,
+    prepareMove: (PlayerMove) -> Unit,
+    cancelTransactionSelection: () -> Unit,
+) {
+    bpDialog(
+        isOpen = state != null,
+        title = "Time to foot the bill!",
+        canEscapeKeyClose = true,
+        canOutsideClickClose = true,
+        isCloseButtonShown = true,
+        onClose = cancelTransactionSelection,
+    ) {
+        attrs {
+            className = GameStyles.getClassName { it::transactionsSelector }
+        }
+        div {
+            attrs {
+                classes += Classes.DIALOG_BODY
+            }
+            p {
+                +"You don't have enough resources to perform this move, but you can buy them from neighbours. "
+                +"Please pick an option:"
+            }
+            if (state != null) { // should always be true when the dialog is rendered
+                styledDiv {
+                    css {
+                        margin(all = LinearDimension.auto)
+                        display = Display.flex
+                        alignItems = Align.center
+                    }
+                    bpIcon("user", size = 50)
+                    styledDiv {
+                        css {
+                            grow(Grow.GROW)
+                            margin(horizontal = 0.5.rem)
+                        }
+                        optionsTable(state, prepareMove)
+                    }
+                    bpIcon("user", size = 50)
+                }
+            }
+        }
+    }
+}
+
+private fun RBuilder.optionsTable(
+    state: TransactionSelectorState,
+    prepareMove: (PlayerMove) -> Unit,
+) {
+    bpHtmlTable(interactive = true) {
+        tbody {
+            state.transactionsOptions.forEach { transactions ->
+                styledTr {
+                    css {
+                        cursor = Cursor.pointer
+                        alignItems = Align.center
+                    }
+                    attrs {
+                        onClickFunction = { prepareMove(PlayerMove(state.moveType, state.card.name, transactions)) }
+                    }
+                    // there should be at most one of each
+                    val left = transactions.firstOrNull { it.provider == Provider.LEFT_PLAYER }
+                    val right = transactions.firstOrNull { it.provider == Provider.RIGHT_PLAYER }
+                    styledTd {
+                        transactionCellCss()
+                        if (left != null) {
+                            styledDiv {
+                                transactionCellInnerCss()
+                                bpIcon(name = left.provider.arrowIcon(), size = Icon.SIZE_LARGE)
+                                goldIndicator(left.totalPrice, imgSize = 2.rem)
+                            }
+                        }
+                    }
+                    styledTd {
+                        transactionCellCss()
+                        if (left != null) {
+                            styledDiv {
+                                transactionCellInnerCss()
+                                resourceList(left.resources)
+                            }
+                        }
+                    }
+                    styledTd {
+                        transactionCellCss()
+                        css {
+                            // make this cell fill the space
+                            width = 100.pct
+                        }
+//                        goldIndicator(-transactions.sumBy { it.totalPrice }) {
+//                            css {
+//                                width = LinearDimension.fitContent
+//                                margin(horizontal = LinearDimension.auto)
+//                            }
+//                        }
+                    }
+                    styledTd {
+                        transactionCellCss()
+                        if (right != null) {
+                            styledDiv {
+                                transactionCellInnerCss()
+                                resourceList(right.resources)
+                            }
+                        }
+                    }
+                    styledTd {
+                        transactionCellCss()
+                        if (right != null) {
+                            styledDiv {
+                                transactionCellInnerCss()
+                                goldIndicator(right.totalPrice, imgSize = 2.rem)
+                                bpIcon(name = right.provider.arrowIcon(), size = Icon.SIZE_LARGE)
+                            }
+                        }
+                    }
+                }
+            }
+        }
+    }
+}
+
+private fun StyledDOMBuilder<TD>.transactionCellCss() {
+    // we need inline styles to win over blueprintjs's styles (which are more specific than .class)
+    inlineStyles {
+        verticalAlign = VerticalAlign.middle
+    }
+}
+
+private fun StyledDOMBuilder<DIV>.transactionCellInnerCss() {
+    css {
+        display = Display.flex
+        flexDirection = FlexDirection.row
+        alignItems = Align.center
+    }
+}
+
+private fun Provider.arrowIcon() = when (this) {
+    Provider.LEFT_PLAYER -> "caret-left"
+    Provider.RIGHT_PLAYER -> "caret-right"
+}
+
+private fun RBuilder.resourceList(resources: List<CountedResource>) {
+    // The biggest card is the Palace and requires 7 resources (1 of each).
+    // We always have at least 1 resource on our wonder, so we'll never need to buy more than 6.
+    // Therefore, 3 by row seems decent.
+    val rows = resources.toRepeatedTypesList().chunked(3)
+    styledDiv {
+        css {
+            display = Display.flex
+            flexDirection = FlexDirection.column
+            alignItems = Align.center
+            grow(Grow.GROW)
+        }
+        rows.forEach { row ->
+            styledDiv {
+                resourceRowCss()
+                row.forEach {
+                    resourceImage(it, size = 1.5.rem)
+                }
+            }
+        }
+    }
+}
+
+private fun StyledDOMBuilder<DIV>.resourceRowCss() {
+    css {
+        display = Display.flex
+        flexDirection = FlexDirection.row
+        alignItems = Align.center
+        margin(horizontal = LinearDimension.auto)
+    }
+}
+
+private fun List<CountedResource>.toRepeatedTypesList(): List<ResourceType> = flatMap { cr -> List(cr.count) { cr.type } }
diff --git a/sw-ui/src/main/kotlin/org/luxons/sevenwonders/ui/redux/Actions.kt b/sw-ui/src/main/kotlin/org/luxons/sevenwonders/ui/redux/Actions.kt
index bacf6795..951f4f2a 100644
--- a/sw-ui/src/main/kotlin/org/luxons/sevenwonders/ui/redux/Actions.kt
+++ b/sw-ui/src/main/kotlin/org/luxons/sevenwonders/ui/redux/Actions.kt
@@ -19,6 +19,10 @@ data class EnterGameAction(val lobby: LobbyDTO, val turnInfo: PlayerTurnInfo) :
 
 data class TurnInfoEvent(val turnInfo: PlayerTurnInfo) : RAction
 
+data class StartTransactionSelection(val transactionSelector: TransactionSelectorState) : RAction
+
+object CancelTransactionSelection : RAction
+
 data class PreparedMoveEvent(val move: PlayerMove) : RAction
 
 data class PreparedCardEvent(val card: PreparedCard) : RAction
diff --git a/sw-ui/src/main/kotlin/org/luxons/sevenwonders/ui/redux/Reducers.kt b/sw-ui/src/main/kotlin/org/luxons/sevenwonders/ui/redux/Reducers.kt
index 97d00ab7..ef1f0362 100644
--- a/sw-ui/src/main/kotlin/org/luxons/sevenwonders/ui/redux/Reducers.kt
+++ b/sw-ui/src/main/kotlin/org/luxons/sevenwonders/ui/redux/Reducers.kt
@@ -1,5 +1,6 @@
 package org.luxons.sevenwonders.ui.redux
 
+import org.luxons.sevenwonders.model.MoveType
 import org.luxons.sevenwonders.model.PlayerMove
 import org.luxons.sevenwonders.model.PlayerTurnInfo
 import org.luxons.sevenwonders.model.api.ConnectedPlayer
@@ -8,6 +9,7 @@ import org.luxons.sevenwonders.model.api.PlayerDTO
 import org.luxons.sevenwonders.model.api.State
 import org.luxons.sevenwonders.model.cards.CardBack
 import org.luxons.sevenwonders.model.cards.HandCard
+import org.luxons.sevenwonders.model.resources.PricedResourceTransactions
 import redux.RAction
 
 data class SwState(
@@ -29,11 +31,18 @@ data class GameState(
     val turnInfo: PlayerTurnInfo?,
     val preparedCardsByUsername: Map<String, CardBack?> = emptyMap(),
     val currentPreparedMove: PlayerMove? = null,
+    val transactionSelector: TransactionSelectorState? = null,
 ) {
     val currentPreparedCard: HandCard?
         get() = turnInfo?.hand?.firstOrNull { it.name == currentPreparedMove?.cardName }
 }
 
+data class TransactionSelectorState(
+    val moveType: MoveType,
+    val card: HandCard,
+    val transactionsOptions: Set<PricedResourceTransactions>,
+)
+
 fun rootReducer(state: SwState, action: RAction): SwState = state.copy(
     gamesById = gamesReducer(state.gamesById, action),
     connectedPlayer = currentPlayerReducer(state.connectedPlayer, action),
@@ -81,5 +90,8 @@ private fun gameStateReducer(gameState: GameState?, action: RAction): GameState?
         turnInfo = action.turnInfo,
         currentPreparedMove = null,
     )
+    is StartTransactionSelection -> gameState?.copy(transactionSelector = action.transactionSelector)
+    is CancelTransactionSelection -> gameState?.copy(transactionSelector = null)
+    is RequestPrepareMove -> gameState?.copy(transactionSelector = null)
     else -> gameState
 }