package pl.treksoft.kvision.dropdown

import com.github.snabbdom.VNode
import pl.treksoft.kvision.core.Component
import pl.treksoft.kvision.core.CssSize
import pl.treksoft.kvision.html.BUTTONSTYLE
import pl.treksoft.kvision.html.Button
import pl.treksoft.kvision.html.LIST
import pl.treksoft.kvision.html.Link
import pl.treksoft.kvision.html.ListTag
import pl.treksoft.kvision.html.TAG
import pl.treksoft.kvision.html.Tag
import pl.treksoft.kvision.panel.SimplePanel
import pl.treksoft.kvision.snabbdom.StringBoolPair
import pl.treksoft.kvision.snabbdom.StringPair
import pl.treksoft.kvision.snabbdom.obj

enum class DD(val type: String) {
    HEADER("DD#HEADER"),
    DISABLED("DD#DISABLED"),
    SEPARATOR("DD#SEPARATOR")
}

open class DropDown(
    text: String, elements: List<StringPair>? = null, icon: String? = null,
    style: BUTTONSTYLE = BUTTONSTYLE.DEFAULT, disabled: Boolean = false,
    classes: Set<String> = setOf()
) : SimplePanel(classes) {
    var text
        get() = button.text
        set(value) {
            button.text = value
        }
    private var elements = elements
        set(value) {
            field = value
            setChildrenFromElements()
        }
    var icon
        get() = button.icon
        set(value) {
            button.icon = value
        }
    var style
        get() = button.style
        set(value) {
            button.style = value
        }
    var size
        get() = button.size
        set(value) {
            button.size = value
        }
    var block
        get() = button.block
        set(value) {
            button.block = value
        }
    var disabled
        get() = button.disabled
        set(value) {
            button.disabled = value
        }
    var image
        get() = button.image
        set(value) {
            button.image = value
        }
    var dropup = false
        set(value) {
            field = value
            refresh()
        }
    override var width: CssSize?
        get() = super.width
        set(value) {
            super.width = value
            button.width = value
        }

    private val idc = "kv_dropdown_" + counter
    internal val button: DropDownButton = DropDownButton(
        idc, text, icon, style,
        disabled, setOf("dropdown")
    )
    internal val list: DropDownListTag = DropDownListTag(idc, setOf("dropdown-menu"))

    init {
        setChildrenFromElements()
        this.addInternal(button)
        this.addInternal(list)
        counter++
    }

    companion object {
        var counter = 0
    }

    override fun add(child: Component): SimplePanel {
        list.add(child)
        return this
    }

    override fun addAll(children: List<Component>): SimplePanel {
        list.addAll(children)
        return this
    }

    override fun remove(child: Component): SimplePanel {
        list.remove(child)
        return this
    }

    override fun removeAll(): SimplePanel {
        list.removeAll()
        return this
    }

    override fun getChildren(): List<Component> {
        return list.getChildren()
    }


    private fun setChildrenFromElements() {
        list.removeAll()
        elements?.let { elems ->
            val c = elems.map {
                when (it.second) {
                    DD.HEADER.type -> Tag(TAG.LI, it.first, classes = setOf("dropdown-header"))
                    DD.SEPARATOR.type -> {
                        val tag = Tag(TAG.LI, it.first, classes = setOf("divider"))
                        tag.role = "separator"
                        tag
                    }
                    DD.DISABLED.type -> {
                        val tag = Tag(TAG.LI, classes = setOf("disabled"))
                        tag.add(Link(it.first, "#"))
                        tag
                    }
                    else -> Link(it.first, it.second)
                }
            }
            list.addAll(c)
        }
    }

    @Suppress("UnsafeCastFromDynamic")
    override fun afterInsert(node: VNode) {
        this.getElementJQuery()?.on("show.bs.dropdown", { e, _ ->
            this.dispatchEvent("showBsDropdown", obj { detail = e })
        })
        this.getElementJQuery()?.on("shown.bs.dropdown", { e, _ ->
            this.dispatchEvent("shownBsDropdown", obj { detail = e })
        })
        this.getElementJQuery()?.on("hide.bs.dropdown", { e, _ ->
            this.dispatchEvent("hideBsDropdown", obj { detail = e })
        })
        this.getElementJQuery()?.on("hidden.bs.dropdown", { e, _ ->
            this.dispatchEvent("hiddenBsDropdown", obj { detail = e })
        })
    }

    override fun getSnClass(): List<StringBoolPair> {
        val cl = super.getSnClass().toMutableList()
        if (dropup)
            cl.add("dropup" to true)
        else
            cl.add("dropdown" to true)
        return cl
    }

    open fun toggle() {
        this.list.getElementJQueryD()?.dropdown("toggle")
    }
}

open class DropDownButton(
    id: String, text: String, icon: String? = null, style: BUTTONSTYLE = BUTTONSTYLE.DEFAULT,
    disabled: Boolean = false, classes: Set<String> = setOf()
) :
    Button(text, icon, style, disabled, classes) {

    init {
        this.id = id
    }

    override fun getSnAttrs(): List<StringPair> {
        return super.getSnAttrs() + listOf(
            "data-toggle" to "dropdown", "aria-haspopup" to "true",
            "aria-expanded" to "false"
        )
    }
}

open class DropDownListTag(private val ariaId: String, classes: Set<String> = setOf()) : ListTag(
    LIST.UL, null,
    false, classes
) {

    override fun getSnAttrs(): List<StringPair> {
        return super.getSnAttrs() + listOf("aria-labelledby" to ariaId)
    }
}