import { ScrollListState, ScrollListScrollState } from './reducers'

export const SCROLL_LIST_SCROLL = '@@cosmo_ui/SCROLL_LIST_SCROLL'
export const SCROLL_LIST_UPDATE = '@@cosmo_ui/SCROLL_LIST_UPDATE'
export const SCROLL_LIST_JUMP = '@@cosmo_ui/SCROLL_LIST_JUMP'

export interface ScrollListScrollAction {
    type: '@@cosmo_ui/SCROLL_LIST_SCROLL'
    id: string
    scroll: ScrollListScrollState
}

export interface ScrollListUpdateAction {
    type: '@@cosmo_ui/SCROLL_LIST_UPDATE'
    id: string
    scrollList: ScrollListState
}

export interface ScrollListJumpAction {
    type: '@@cosmo_ui/SCROLL_LIST_JUMP'
    id: string
    idx: number
}

export type ScrollListAction = ScrollListScrollAction
    | ScrollListUpdateAction
    | ScrollListJumpAction

export const scrollListScroll = (id: string,
                                 scroll: ScrollListScrollState): ScrollListScrollAction =>
    ({
        type: SCROLL_LIST_SCROLL,
        id,
        scroll,
    })

export const scrollListUpdate = (id: string, scrollList: ScrollListState): ScrollListUpdateAction =>
    ({
        type: SCROLL_LIST_UPDATE,
        id,
        scrollList,
    })

export const scrollListJump = (id: string, idx: number): ScrollListJumpAction => ({
    type: SCROLL_LIST_JUMP,
    id,
    idx,
})