###
# Copyright (C) 2014-2018 Taiga Agile LLC
#
# This program is free software: you can redistribute it and/or modify
# it under the terms of the GNU Affero General Public License as
# published by the Free Software Foundation, either version 3 of the
# License, or (at your option) any later version.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU Affero General Public License for more details.
#
# You should have received a copy of the GNU Affero General Public License
# along with this program. If not, see <http://www.gnu.org/licenses/>.
#
# File: modules/common/components.coffee
###

taiga = @.taiga
bindOnce = @.taiga.bindOnce

module = angular.module("taigaCommon")


#############################################################################
## Date Range Directive (used mainly for sprint date range)
#############################################################################

DateRangeDirective = ($translate) ->
    renderRange = ($el, first, second) ->
        prettyDate = $translate.instant("BACKLOG.SPRINTS.DATE")
        initDate = moment(first).format(prettyDate)
        endDate = moment(second).format(prettyDate)
        $el.html("#{initDate}-#{endDate}")

    link = ($scope, $el, $attrs) ->
        [first, second] = $attrs.tgDateRange.split(",")

        bindOnce $scope, first, (valFirst) ->
            bindOnce $scope, second, (valSecond) ->
                renderRange($el, valFirst, valSecond)

    return {link:link}

module.directive("tgDateRange", ["$translate", DateRangeDirective])


#############################################################################
## Date Selector Directive (using pikaday)
#############################################################################

DateSelectorDirective = ($rootscope, datePickerConfigService) ->
    link = ($scope, $el, $attrs, $model) ->
        selectedDate = null

        initialize = () ->
            datePickerConfig = datePickerConfigService.get()

            _.merge(datePickerConfig, {
                field: $el[0]
            })

            $el.picker = new Pikaday(datePickerConfig)

        unbind = $rootscope.$on "$translateChangeEnd", (ctx) =>
            $el.picker.destroy() if $el.picker
            initialize()

        $attrs.$observe "pickerValue", (val) ->
            $el.val(val)

            if val?
                $el.picker.destroy() if $el.picker
                initialize()

            $el.picker.setDate(val)

        $scope.$on "$destroy", ->
            $el.off()
            unbind()
            $el.picker.destroy()

    return {
        link: link
    }

module.directive("tgDateSelector", ["$rootScope", "tgDatePickerConfigService", DateSelectorDirective])


#############################################################################
## Sprint Progress Bar Directive
#############################################################################

SprintProgressBarDirective = ->
    renderProgress = ($el, percentage, visual_percentage) ->
        if $el.hasClass(".current-progress")
            $el.css("width", "#{percentage}%")
        else
            $el.find(".current-progress").css("width", "#{visual_percentage}%")
            $el.find(".number").html("#{percentage} %")

    link = ($scope, $el, $attrs) ->
        bindOnce $scope, $attrs.tgSprintProgressbar, (sprint) ->
            closedPoints = sprint.closed_points
            totalPoints = sprint.total_points
            percentage = 0
            percentage = Math.round(100 * (closedPoints/totalPoints)) if totalPoints != 0
            visual_percentage = 0
            #Visual hack for .current-progress bar
            visual_percentage = Math.round(98 * (closedPoints/totalPoints)) if totalPoints != 0

            renderProgress($el, percentage, visual_percentage)

        $scope.$on "$destroy", ->
            $el.off()

    return {link: link}

module.directive("tgSprintProgressbar", SprintProgressBarDirective)


#############################################################################
## Created-by display directive
#############################################################################

CreatedByDisplayDirective = ($template, $compile, $translate, $navUrls, avatarService)->
    # Display the owner information (full name and photo) and the date of
    # creation of an object (like USs, tasks and issues).
    #
    # Example:
    #     div.us-created-by(tg-created-by-display, ng-model="us")
    #
    # Requirements:
    #   - model object must have the attributes 'created_date' and
    #     'owner'(ng-model)
    #   - scope.usersById object is required.

    link = ($scope, $el, $attrs) ->
        bindOnce $scope, $attrs.ngModel, (model) ->
            if model?

                avatar = avatarService.getAvatar(model.owner_extra_info)
                $scope.owner = model.owner_extra_info or {
                    full_name_display: $translate.instant("COMMON.EXTERNAL_USER")
                }

                $scope.owner.avatar = avatar.url
                $scope.owner.bg = avatar.bg

                $scope.url = if $scope.owner?.is_active then $navUrls.resolve("user-profile", {username: $scope.owner.username}) else ""


                $scope.date =  moment(model.created_date).format($translate.instant("COMMON.DATETIME"))

        $scope.$on "$destroy", ->
            $el.off()

    return {
        link: link
        restrict: "EA"
        require: "ngModel",
        scope: true,
        templateUrl: "common/components/created-by.html"
    }

module.directive("tgCreatedByDisplay", ["$tgTemplate", "$compile", "$translate", "$tgNavUrls", "tgAvatarService",
                                        CreatedByDisplayDirective])


UserDisplayDirective = ($template, $compile, $translate, $navUrls, avatarService)->
    # Display the user information (full name and photo).
    #
    # Example:
    #     div.creator(tg-user-display, tg-user-id="{{ user.id }}")
    #
    # Requirements:
    #   - scope.usersById object is required.

    link = ($scope, $el, $attrs) ->
        id = $attrs.tgUserId
        $scope.user = $scope.usersById[id] or {
            full_name_display: $translate.instant("COMMON.EXTERNAL_USER")
        }

        avatar = avatarService.getAvatar($scope.usersById[id] or null)

        $scope.user.avatar = avatar.url
        $scope.user.bg = avatar.bg

        $scope.url = if $scope.user.is_active then $navUrls.resolve("user-profile", {username: $scope.user.username}) else ""

        $scope.$on "$destroy", ->
            $el.off()

    return {
        link: link
        restrict: "EA"
        scope: true,
        templateUrl: "common/components/user-display.html"
    }

module.directive("tgUserDisplay", ["$tgTemplate", "$compile", "$translate", "$tgNavUrls", "tgAvatarService",
                                   UserDisplayDirective])

#############################################################################
## Watchers directive
#############################################################################

WatchersDirective = ($rootscope, $confirm, $repo, $modelTransform, $template, $compile, $translate) ->
    # You have to include a div with the tg-lb-watchers directive in the page
    # where use this directive

    link = ($scope, $el, $attrs, $model) ->
        isEditable = ->
            return $scope.project?.my_permissions?.indexOf($attrs.requiredPerm) != -1

        save = (watchers) ->
            transform = $modelTransform.save (item) ->
                item.watchers = watchers

                return item

            transform.then ->
                watchers = _.map(watchers, (watcherId) -> $scope.usersById[watcherId])
                renderWatchers(watchers)
                $rootscope.$broadcast("object:updated")
            transform.then null, ->
                $confirm.notify("error")

        deleteWatcher = (watcherIds) ->
            transform = $modelTransform.save (item) ->
                item.watchers = watcherIds

                return item

            transform.then () ->
                item = $modelTransform.getObj()
                watchers = _.map(item.watchers, (watcherId) -> $scope.usersById[watcherId])
                renderWatchers(watchers)
                $rootscope.$broadcast("object:updated")

            transform.then null, ->
                item.revert()
                $confirm.notify("error")

        renderWatchers = (watchers) ->
            $scope.watchers = watchers
            $scope.isEditable = isEditable()

        $el.on "click", ".js-delete-watcher", (event) ->
            event.preventDefault()
            return if not isEditable()
            target = angular.element(event.currentTarget)
            watcherId = target.data("watcher-id")

            title = $translate.instant("COMMON.WATCHERS.TITLE_LIGHTBOX_DELETE_WARTCHER")
            message = $scope.usersById[watcherId].full_name_display

            $confirm.askOnDelete(title, message).then (askResponse) =>
                askResponse.finish()

                watcherIds = _.clone($model.$modelValue.watchers, false)
                watcherIds = _.pull(watcherIds, watcherId)

                deleteWatcher(watcherIds)

        $scope.$on "watcher:added", (ctx, watcherId) ->
            watchers = _.clone($model.$modelValue.watchers, false)
            watchers.push(watcherId)
            watchers = _.uniq(watchers)

            save(watchers)

        $scope.$watch $attrs.ngModel, (item) ->
            return if not item?
            watchers = _.map(item.watchers, (watcherId) -> $scope.usersById[watcherId])
            watchers = _.filter watchers, (it) -> return !!it

            renderWatchers(watchers)

        $scope.$on "$destroy", ->
            $el.off()

    return {
        scope: true,
        templateUrl: "common/components/watchers.html",
        link:link,
        require:"ngModel"
    }

module.directive("tgWatchers", ["$rootScope", "$tgConfirm", "$tgRepo", "$tgQueueModelTransformation", "$tgTemplate", "$compile",
                                "$translate", WatchersDirective])

#############################################################################
## Block Button directive
#############################################################################

BlockButtonDirective = ($rootscope, $loading, $template) ->
    template = $template.get("common/components/block-button.html")

    link = ($scope, $el, $attrs, $model) ->
        isEditable = ->
            return $scope.project.my_permissions.indexOf("modify_us") != -1

        $scope.$watch $attrs.ngModel, (item) ->
            return if not item

            if isEditable()
                $el.find('.item-block').addClass('editable')

            if item.is_blocked
                $el.find('.item-block').removeClass('is-active')
                $el.find('.item-unblock').addClass('is-active')
            else
                $el.find('.item-block').addClass('is-active')
                $el.find('.item-unblock').removeClass('is-active')

        $el.on "click", ".item-block", (event) ->
            event.preventDefault()
            $rootscope.$broadcast("block", $model.$modelValue)

        $el.on "click", ".item-unblock", (event) ->
            event.preventDefault()
            currentLoading = $loading()
                .target($el.find(".item-unblock"))
                .start()

            finish = ->
                currentLoading.finish()

            $rootscope.$broadcast("unblock", $model.$modelValue, finish)

        $scope.$on "$destroy", ->
            $el.off()

    return {
        link: link
        restrict: "EA"
        require: "ngModel"
        template: template
    }

module.directive("tgBlockButton", ["$rootScope", "$tgLoading", "$tgTemplate", BlockButtonDirective])


#############################################################################
## Delete Button directive
#############################################################################

DeleteButtonDirective = ($log, $repo, $confirm, $location, $template) ->
    template = $template.get("common/components/delete-button.html")

    link = ($scope, $el, $attrs, $model) ->
        if not $attrs.onDeleteGoToUrl
            return $log.error "DeleteButtonDirective requires on-delete-go-to-url set in scope."
        if not $attrs.onDeleteTitle
            return $log.error "DeleteButtonDirective requires on-delete-title set in scope."

        $el.on "click", ".button-delete", (event) ->
            title = $attrs.onDeleteTitle
            subtitle = $model.$modelValue.subject

            $confirm.askOnDelete(title, subtitle).then (askResponse) =>
                promise = $repo.remove($model.$modelValue)
                promise.then =>
                    askResponse.finish()
                    url = $scope.$eval($attrs.onDeleteGoToUrl)
                    $location.path(url)
                promise.then null, =>
                    askResponse.finish(false)
                    $confirm.notify("error")

        $scope.$on "$destroy", ->
            $el.off()

    return {
        link: link
        restrict: "EA"
        require: "ngModel"
        template: template
    }

module.directive("tgDeleteButton", ["$log", "$tgRepo", "$tgConfirm", "$tgLocation", "$tgTemplate", DeleteButtonDirective])

#############################################################################
## Common list directives
#############################################################################
## NOTE: These directives are used in issues and search and are
##       completely bindonce, they only serves for visualization of data.
#############################################################################

ListItemEpicStatusDirective = ->
    link = ($scope, $el, $attrs) ->
        epic = $scope.$eval($attrs.tgListitemEpicStatus)
        bindOnce $scope, "epicStatusById", (epicStatusById) ->
            $el.html(epicStatusById[epic.status].name)

    return {link:link}

module.directive("tgListitemEpicStatus", ListItemEpicStatusDirective)

ListItemUsStatusDirective = ->
    link = ($scope, $el, $attrs) ->
        us = $scope.$eval($attrs.tgListitemUsStatus)
        bindOnce $scope, "usStatusById", (usStatusById) ->
            $el.html(usStatusById[us.status].name)

    return {link:link}

module.directive("tgListitemUsStatus", ListItemUsStatusDirective)


ListItemTaskStatusDirective = ->
    link = ($scope, $el, $attrs) ->
        task = $scope.$eval($attrs.tgListitemTaskStatus)
        bindOnce $scope, "taskStatusById", (taskStatusById) ->
            $el.html(taskStatusById[task.status].name)

    return {link:link}

module.directive("tgListitemTaskStatus", ListItemTaskStatusDirective)


ListItemAssignedtoDirective = ($template, $translate, avatarService) ->
    template = $template.get("common/components/list-item-assigned-to-avatar.html", true)

    link = ($scope, $el, $attrs) ->
        bindOnce $scope, "usersById", (usersById) ->
            item = $scope.$eval($attrs.tgListitemAssignedto)
            ctx = {
                name: $translate.instant("COMMON.ASSIGNED_TO.NOT_ASSIGNED"),
            }

            member = usersById[item.assigned_to]
            avatar = avatarService.getAvatar(member)

            ctx.imgurl = avatar.url
            ctx.bg = avatar.bg

            if member
                ctx.name = member.full_name_display

            $el.html(template(ctx))

    return {link:link}

module.directive("tgListitemAssignedto", ["$tgTemplate", "$translate", "tgAvatarService", ListItemAssignedtoDirective])


ListItemIssueStatusDirective = ->
    link = ($scope, $el, $attrs) ->
        issue = $scope.$eval($attrs.tgListitemIssueStatus)
        bindOnce $scope, "issueStatusById", (issueStatusById) ->
            $el.html(issueStatusById[issue.status].name)

    return {link:link}

module.directive("tgListitemIssueStatus", ListItemIssueStatusDirective)


ListItemTypeDirective = ->
    link = ($scope, $el, $attrs) ->
        render = (issueTypeById, issue) ->
            type = issueTypeById[issue.type]
            domNode = $el.find(".level")
            domNode.css("background-color", type.color)
            domNode.attr("title", type.name)

        bindOnce $scope, "issueTypeById", (issueTypeById) ->
            issue = $scope.$eval($attrs.tgListitemType)
            render(issueTypeById, issue)

        $scope.$watch $attrs.tgListitemType, (issue) ->
            render($scope.issueTypeById, issue)

    return {
        link: link
        templateUrl: "common/components/level.html"
    }

module.directive("tgListitemType", ListItemTypeDirective)


ListItemPriorityDirective = ->
    link = ($scope, $el, $attrs) ->
        render = (priorityById, issue) ->
            priority = priorityById[issue.priority]
            domNode = $el.find(".level")
            domNode.css("background-color", priority.color)
            domNode.attr("title", priority.name)

        bindOnce $scope, "priorityById", (priorityById) ->
            issue = $scope.$eval($attrs.tgListitemPriority)
            render(priorityById, issue)

        $scope.$watch $attrs.tgListitemPriority, (issue) ->
            render($scope.priorityById, issue)

    return {
        link: link
        templateUrl: "common/components/level.html"
    }

module.directive("tgListitemPriority", ListItemPriorityDirective)


ListItemSeverityDirective = ->
    link = ($scope, $el, $attrs) ->
        render = (severityById, issue) ->
            severity = severityById[issue.severity]
            domNode = $el.find(".level")
            domNode.css("background-color", severity.color)
            domNode.attr("title", severity.name)

        bindOnce $scope, "severityById", (severityById) ->
            issue = $scope.$eval($attrs.tgListitemSeverity)
            render(severityById, issue)

        $scope.$watch $attrs.tgListitemSeverity, (issue) ->
            render($scope.severityById, issue)

    return {
        link: link
        templateUrl: "common/components/level.html"
    }

module.directive("tgListitemSeverity", ListItemSeverityDirective)


#############################################################################
## Progress bar directive
#############################################################################

TgProgressBarDirective = ($template) ->
    template = $template.get("common/components/progress-bar.html", true)

    render = (el, percentage) ->
        el.html(template({percentage: percentage}))

    link = ($scope, $el, $attrs) ->
        element = angular.element($el)

        $scope.$watch $attrs.tgProgressBar, (percentage) ->
            percentage = _.max([0 , percentage])
            percentage = _.min([100, percentage])
            render($el, percentage)

        $scope.$on "$destroy", ->
            $el.off()

    return {link: link}

module.directive("tgProgressBar", ["$tgTemplate", TgProgressBarDirective])


#############################################################################
## Main title directive
#############################################################################

TgMainTitleDirective = ($translate) ->
    link = ($scope, $el, $attrs) ->
        $attrs.$observe "i18nSectionName", (i18nSectionName) ->
            $scope.sectionName = i18nSectionName

        $scope.$on "$destroy", ->
            $el.off()

    return {
        link: link
        templateUrl: "common/components/main-title.html"
        scope: {
            projectName : "=projectName"
        }
    }

module.directive("tgMainTitle", ["$translate",  TgMainTitleDirective])