<template>
    <div
        ref="config"
        class="csc-pbx-device-config justify-center row"
    >
        <div
            class="csc-pbx-device-canvas"
            :style="canvasStyles"
        >
            <div
                ref="imageWrapper"
                class="csc-pbx-device-image"
                :style="imageWrapperStyles"
            >
                <img
                    ref="image"
                    :src="imageUrl"
                    :style="imageStyles"
                    @load="imageLoaded"
                >
            </div>
            <div
                v-for="(key, index) in keys"
                :key="index"
                :class="spotClasses(key)"
                :style="spotPosition(key)"
                @click="openKeyOverlay(key)"
            >
                {{ key.index + 1 }}
            </div>
        </div>
        <div
            v-if="keyOverlayActive"
            class="csc-pbx-device-config-key-overlay animate-fade"
        >
            <csc-pbx-device-config-key-form
                :selected-line="selectedLine"
                :selected-key="selectedKey"
                :subsriber-map="subscriberMap"
                :loading="isDeviceLoading(device.id)"
                @closeKeyOverlay="keyOverlayActive = false"
                @onSave="onSave"
            />
        </div>
        <q-resize-observer
            @resize="windowResize"
        />
    </div>
</template>

<script>
import _ from 'lodash'
import CscPbxDeviceConfigKeyForm from './CscPbxDeviceConfigKeyForm'
import {
    BoundingBox2D
} from 'src/helpers/graphics'
import { mapGetters } from 'vuex'

export default {
    name: 'CscPbxDeviceConfig',
    components: {
        CscPbxDeviceConfigKeyForm
    },
    props: {
        device: {
            type: Object,
            default: null
        },
        model: {
            type: Object,
            default: null
        },
        modelImage: {
            type: Object,
            default: null
        },
        subscriberMap: {
            type: Object,
            default: null
        }
    },
    emits: ['keysChanged'],
    data () {
        return {
            configWidth: 0,
            imageDeltaX: 0,
            imageScaleFactor: 1,
            imageWidth: 0,
            boundingBox: null,
            scaledBoundingBox: null,
            selectedKey: null,
            selectedLine: null,
            keyOverlayActive: false
        }
    },
    computed: {
        ...mapGetters('pbxDevices', [
            'isDeviceLoading'
        ]),
        imageUrl () {
            return _.get(this.modelImage, 'url', null)
        },
        keySets () {
            return _.get(this.model, 'linerange', [])
        },
        keys () {
            const keys = []
            this.keySets.forEach(($keySet, $keySetIndex) => {
                const $keys = _.get($keySet, 'keys', [])
                $keys.forEach(($key, $index) => {
                    const key = _.clone($key)
                    key.keySet = $keySet
                    key.index = $index + $keySetIndex
                    keys.push(key)
                })
            })
            return keys
        },
        canvasStyles () {
            return {
                width: this.configWidth + 'px'
            }
        },
        imageWrapperStyles () {
            return {
                width: this.configWidth + 'px'
            }
        },
        imageStyles () {
            return {
                left: this.imageDeltaX + 'px',
                width: (this.imageWidth * this.imageScaleFactor) + 'px'
            }
        },
        lines () {
            return _.get(this.device, 'lines', [])
        }
    },
    watch: {
        device () {
            if (this.keyOverlayActive) {
                this.selectedLine = this.getLineByKey(this.selectedKey)
            }
        }
    },
    mounted () {
        this.boundingBox = BoundingBox2D.createFromPoints(this.keys)
        this.boundingBox.addMargin(40)
    },
    methods: {
        getLineByKey (key) {
            let line = null
            this.lines.forEach(($line, $lineIndex) => {
                if ($line.key_num === key.index && $line.linerange === key.keySet.name) {
                    line = _.clone($line)
                    line.index = $lineIndex
                }
            })
            return line
        },
        windowResize () {
            this.resize()
            this.placeImage()
        },
        imageLoaded () {
            this.resize()
            this.placeImage()
        },
        resize () {
            this.imageWidth = this.$refs.image?.naturalWidth
            this.configWidth = this.$refs.config?.clientWidth
            if (this.boundingBox !== null) {
                if (this.boundingBox.getWidth() > this.configWidth) {
                    this.imageScaleFactor = this.configWidth / this.boundingBox.getWidth()
                } else {
                    this.imageScaleFactor = 1
                }
                this.scaledBoundingBox = this.boundingBox.clone()
                this.scaledBoundingBox.scale(this.imageScaleFactor)
            }
        },
        placeImage () {
            const configCenterX = this.configWidth / 2
            if (this.scaledBoundingBox !== null) {
                this.imageDeltaX = -1 * this.scaledBoundingBox.getCenterX() + configCenterX
            }
        },
        getScaleFactorX () {
            if (_.isObject(this.$refs.image)) {
                return this.$refs.image.width / this.$refs.image.naturalWidth
            }
            return 1
        },
        getScaleFactorY () {
            if (_.isObject(this.$refs.image)) {
                return this.$refs.image.height / this.$refs.image.naturalHeight
            }
            return 1
        },
        keyPointing (key) {
            const pointing = {
                left: 'right',
                right: 'left',
                top: 'down',
                bottom: 'up'
            }
            return pointing[key.labelpos]
        },
        spotPosition (key) {
            let deltaX = 0
            if (this.scaledBoundingBox !== null) {
                deltaX = -1 * this.scaledBoundingBox.getCenterX() + this.configWidth / 2
            }
            const width = 25 * this.imageScaleFactor
            const height = 25 * this.imageScaleFactor
            let x = (key.x * this.imageScaleFactor) + deltaX
            let y = (key.y * this.imageScaleFactor)
            switch (key.labelpos) {
            case 'left':
                y = y - height / 2
                x = x - width
                break
            case 'right':
                y = y - height / 2
                break
            case 'top':
                x = x - width / 2
                y = y - height
                break
            case 'bottom':
                x = x - width / 2
                break
            }
            return {
                top: y + 'px',
                left: x + 'px',
                width: width + 'px',
                height: height + 'px',
                position: 'absolute',
                lineHeight: width + 'px',
                zIndex: 10
            }
        },
        spotClasses (key) {
            const classes = ['csc-pbx-device-button-spot', 'shadow-3']
            if (this.getLineByKey(key) !== null) {
                classes.push('csc-pbx-device-button-active')
            }
            return classes
        },
        openKeyOverlay (key) {
            this.selectedKey = key
            this.selectedLine = this.getLineByKey(key)
            this.keyOverlayActive = true
            this.$scrollTo(this.$parent.$el)
        },
        onSave (newLine) {
            const newLines = []
            const lines = _.cloneDeep(this.lines)
            const line = this.getLineByKey(this.selectedKey)
            if (line !== null && newLine.type === null) {
                delete lines[line.index]
            } else if (line !== null) {
                _.set(lines, line.index + '.subscriber_id', newLine.subscriber_id)
                _.set(lines, line.index + '.target_number', newLine.target_number)
                _.set(lines, line.index + '.type', newLine.type)
            } else {
                newLines.push(newLine)
            }
            lines.forEach((line) => {
                newLines.push({
                    extension_unit: line.extension_unit,
                    key_num: line.key_num,
                    subscriber_id: line.subscriber_id,
                    linerange: line.linerange,
                    type: line.type,
                    target_number: line.target_number
                })
            })
            this.$emit('keysChanged', newLines)
        }
    }
}
</script>

<style lang="sass" rel="stylesheet/sass">
$spotSize: 25px

.csc-device-key-title
    margin-bottom: $flex-gutter-md

.csc-device-key-title-icon
    margin-right: $flex-gutter-xs

.csc-device-key-title-main
    font-size: 1rem
.csc-device-key-title-sub
    font-size: 90%
    margin-top: 0.2rem

.csc-pbx-device-config-key-overlay
    .title
        .q-icon
            margin-right: 8px
        font-size: 18px
        font-weight: 400
        letter-spacing: normal
        line-height: 1.8rem
        margin-bottom: 32px
        text-align: center

    position: absolute
    top: 0
    left: 0
    right: 0
    bottom: 0
    background-color: rgba($secondary, 85%)
    z-index: 10
    padding: 48px

.csc-pbx-device-key-details
    padding: 50px
    position: relative

.csc-pbx-device-config
    margin-top: $flex-gutter-lg
    position: relative
    .spot-modal-content
        position: relative
    .actions
        padding: 32px

.csc-pbx-device-image
    position: relative
    overflow: hidden
    img
        display: block
        position: relative

.csc-pbx-device-canvas
    position: relative

.csc-pbx-key-popover-title
    font-size: 18px
    font-weight: 400
    letter-spacing: normal
    line-height: 1.8rem

.csc-pbx-device-loader
    z-index: 20

.csc-pbx-device-button-spot
    border-radius: 50%
    width: $spotSize
    height: $spotSize
    background-color: white
    line-height: $spotSize
    color: $primary
    text-align: center
    cursor: pointer
    font-weight: bold

.csc-pbx-device-button
    background-color: $primary

.csc-pbx-device-button-active
    background-color: $primary
    color: white

.csc-pbx-key-popover
    min-height: 40px
    padding: 16px
    padding-right: 40px

.csc-close-button.q-btn
    padding: $flex-gutter-xs
    .q-btn-inner
        i
            margin: 0
</style>
