src/main/kotlin/de/uapcore/lightpit/servlet/FeedServlet.kt

/*
 * Copyright 2021 Mike Becker. All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions are met:
 *
 * 1. Redistributions of source code must retain the above copyright
 * notice, this list of conditions and the following disclaimer.
 *
 * 2. Redistributions in binary form must reproduce the above copyright
 * notice, this list of conditions and the following disclaimer in the
 * documentation and/or other materials provided with the distribution.
 *
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
 * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
 * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
 * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
 * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 */

package de.uapcore.lightpit.servlet

import de.uapcore.lightpit.AbstractServlet
import de.uapcore.lightpit.HttpRequest
import de.uapcore.lightpit.dao.DataAccessObject
import de.uapcore.lightpit.util.IssueFilter
import de.uapcore.lightpit.util.IssueSorter
import de.uapcore.lightpit.util.SpecificFilter
import de.uapcore.lightpit.viewmodel.IssueFeed
import de.uapcore.lightpit.viewmodel.ProjectFeed
import javax.servlet.annotation.WebServlet

@WebServlet(urlPatterns = ["/feed/*"])
class FeedServlet : AbstractServlet() {

    init {
        get("/projects.rss", this::projects)
        get("/%project/issues.rss", this::issues)
    }

    private fun projects(http: HttpRequest, dao: DataAccessObject) {

        val projects = dao.listProjects()

        http.view = ProjectFeed(projects)
        http.renderFeed("project-feed")
    }

    private fun issues(http: HttpRequest, dao: DataAccessObject) {
        val project = http.pathParams["project"]?.let { dao.findProjectByNode(it) }
        if (project == null) {
            http.response.sendError(404)
            return
        }

        val issues = dao.listIssues(IssueFilter(SpecificFilter(project))).sortedWith(IssueSorter.DEFAULT_ISSUE_SORTER)

        http.view = IssueFeed(project, issues)
        http.renderFeed("issues-feed")
    }
}