/*
 * Copyright (c) 2017-present Robert Jaros
 *
 * Permission is hereby granted, free of charge, to any person obtaining a copy
 * of this software and associated documentation files (the "Software"), to deal
 * in the Software without restriction, including without limitation the rights
 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
 * copies of the Software, and to permit persons to whom the Software is
 * furnished to do so, subject to the following conditions:
 *
 * The above copyright notice and this permission notice shall be included in all
 * copies or substantial portions of the Software.
 *
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
 * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
 * SOFTWARE.
 */
package pl.treksoft.kvision.navbar

import com.github.snabbdom.VNode
import pl.treksoft.kvision.core.Component
import pl.treksoft.kvision.core.Container
import pl.treksoft.kvision.core.StringBoolPair
import pl.treksoft.kvision.core.StringPair
import pl.treksoft.kvision.html.Link
import pl.treksoft.kvision.html.TAG
import pl.treksoft.kvision.html.Tag.Companion.tag
import pl.treksoft.kvision.panel.SimplePanel

/**
 * Navbar types.
 */
enum class NavbarType(internal val navbarType: String) {
    FIXEDTOP("navbar-fixed-top"),
    FIXEDBOTTOM("navbar-fixed-bottom"),
    STATICTOP("navbar-static-top")
}

/**
 * The Bootstrap Navbar container.
 *
 * @constructor
 * @param label the navbar label
 * @param type the navbar type
 * @param inverted determines if the navbar is inverted
 * @param classes a set of CSS class names
 * @param init an initializer extension function
 */
open class Navbar(
    label: String? = null,
    type: NavbarType? = null,
    inverted: Boolean = false,
    classes: Set<String> = setOf(), init: (Navbar.() -> Unit)? = null
) : SimplePanel(classes) {

    /**
     * The navbar header label.
     */
    var label
        get() = if (brandLink.visible) brandLink.label else null
        set(value) {
            if (value != null) {
                brandLink.label = value
                brandLink.show()
            } else {
                brandLink.hide()
            }
        }

    /**
     * The navbar type.
     */
    var type by refreshOnUpdate(type)
    /**
     * Determines if the navbar is inverted.
     */
    var inverted by refreshOnUpdate(inverted)

    private val idc = "kv_navbar_$counter"

    private val brandLink = Link(label ?: "", "#", classes = setOf("navbar-brand"))
    internal val container = SimplePanel(setOf("collapse", "navbar-collapse")) {
        id = idc
    }

    init {
        val c = SimplePanel(setOf("container-fluid")) {
            simplePanel(setOf("navbar-header")) {
                add(NavbarButton(idc))
                add(brandLink)
            }
            add(container)
        }
        addInternal(c)
        if (label == null) brandLink.hide()
        counter++
        @Suppress("LeakingThis")
        init?.invoke(this)
    }

    override fun render(): VNode {
        return render("nav", childrenVNodes())
    }

    override fun add(child: Component): Navbar {
        container.add(child)
        return this
    }

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

    override fun remove(child: Component): Navbar {
        container.remove(child)
        return this
    }

    override fun removeAll(): Navbar {
        container.removeAll()
        return this
    }

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

    override fun getSnClass(): List<StringBoolPair> {
        val cl = super.getSnClass().toMutableList()
        cl.add("navbar" to true)
        type?.let {
            cl.add(it.navbarType to true)
        }
        if (inverted) {
            cl.add("navbar-inverse" to true)
        } else {
            cl.add("navbar-default" to true)
        }
        return cl
    }

    companion object {
        internal var counter = 0

        /**
         * DSL builder extension function.
         *
         * It takes the same parameters as the constructor of the built component.
         */
        fun Container.navbar(
            label: String? = null,
            type: NavbarType? = null,
            inverted: Boolean = false,
            classes: Set<String> = setOf(), init: (Navbar.() -> Unit)? = null
        ): Navbar {
            val navbar = Navbar(label, type, inverted, classes, init)
            this.add(navbar)
            return navbar
        }
    }
}

/**
 * @suppress
 * Internal component.
 * The Bootstrap Navbar header button.
 */
internal class NavbarButton(private val idc: String, toggle: String = "Toggle navigation") :
    SimplePanel(setOf("navbar-toggle", "collapsed")) {

    init {
        tag(TAG.SPAN, toggle, classes = setOf("sr-only"))
        tag(TAG.SPAN, classes = setOf("icon-bar"))
        tag(TAG.SPAN, classes = setOf("icon-bar"))
        tag(TAG.SPAN, classes = setOf("icon-bar"))
    }

    override fun render(): VNode {
        return render("button", childrenVNodes())
    }

    override fun getSnAttrs(): List<StringPair> {
        return super.getSnAttrs() + listOf(
            "type" to "button",
            "data-toggle" to "collapse",
            "data-target" to "#$idc",
            "aria-expanded" to "false"
        )
    }
}