import { BallState, Player, PlayerPhantom } from "../model/tactic/Player"
import { TacticComponent, TacticContent } from "../model/tactic/Tactic"
import { removeComponent, updateComponent } from "./TacticContentDomains"
import {
    removeAllActionsTargeting,
    spreadNewStateFromOriginStateChange,
} from "./ActionsDomains"
import { ActionKind } from "../model/tactic/Action"

export function getOrigin(
    pathItem: PlayerPhantom,
    components: TacticComponent[],
): Player {
    // Trust the components to contains only phantoms with valid player origin identifiers
    return components.find((c) => c.id == pathItem.originPlayerId)! as Player
}

export function areInSamePath(
    a: Player | PlayerPhantom,
    b: Player | PlayerPhantom,
) {
    if (a.type === "phantom" && b.type === "phantom") {
        return a.originPlayerId === b.originPlayerId
    }
    if (a.type === "phantom") {
        return b.id === a.originPlayerId
    }
    if (b.type === "phantom") {
        return a.id === b.originPlayerId
    }
    return false
}

/**
 * @param origin
 * @param other
 * @param components
 * @returns true if the `other` player is the phantom next-to the origin's path.
 */
export function isNextInPath(
    origin: Player | PlayerPhantom,
    other: Player | PlayerPhantom,
    components: TacticComponent[],
): boolean {
    if (origin.type === "player") {
        return origin.path?.items[0] === other.id
    }
    const originPath = getOrigin(origin, components).path!
    return (
        originPath.items!.indexOf(origin.id) ===
        originPath.items!.indexOf(other.id) - 1
    )
}

export function removePlayerPath(
    player: Player,
    content: TacticContent,
): TacticContent {
    if (player.path == null) {
        return content
    }

    for (const pathElement of player.path.items) {
        content = removeComponent(pathElement, content)
        content = removeAllActionsTargeting(pathElement, content)
    }
    return updateComponent(
        {
            ...player,
            path: null,
        },
        content,
    )
}

export function removePlayer(
    player: Player | PlayerPhantom,
    content: TacticContent,
): TacticContent {
    content = removeAllActionsTargeting(player.id, content)

    if (player.type == "phantom") {
        const origin = getOrigin(player, content.components)
        return truncatePlayerPath(origin, player, content)
    }

    content = removePlayerPath(player, content)
    content = removeComponent(player.id, content)

    for (const action of player.actions) {
        if (action.type !== ActionKind.SHOOT) {
            continue
        }
        const actionTarget = content.components.find(
            (c) => c.id === action.target,
        )! as Player | PlayerPhantom
        return spreadNewStateFromOriginStateChange(
            actionTarget,
            BallState.NONE,
            content,
        )
    }

    return content
}

export function truncatePlayerPath(
    player: Player,
    phantom: PlayerPhantom,
    content: TacticContent,
): TacticContent {
    if (player.path == null) return content

    const path = player.path!

    const truncateStartIdx = path.items.indexOf(phantom.id)

    for (let i = truncateStartIdx; i < path.items.length; i++) {
        const pathPhantomId = path.items[i]

        //remove the phantom from the tactic
        content = removeComponent(pathPhantomId, content)
        content = removeAllActionsTargeting(pathPhantomId, content)
    }

    return updateComponent(
        {
            ...player,
            path:
                truncateStartIdx == 0
                    ? null
                    : {
                          ...path,
                          items: path.items.toSpliced(truncateStartIdx),
                      },
        },
        content,
    )
}

export function changePlayerBallState(
    player: Player | PlayerPhantom,
    newState: BallState,
    content: TacticContent,
): TacticContent {
    return spreadNewStateFromOriginStateChange(player, newState, content)
}