Mercurial > hg > LightPIT / file revision

 /*

  * 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 com.github.difflib.text.DiffRow

 import com.github.difflib.text.DiffRowGenerator

 import de.uapcore.lightpit.AbstractServlet

 import de.uapcore.lightpit.HttpRequest

 import de.uapcore.lightpit.dao.DataAccessObject

 import de.uapcore.lightpit.entities.IssueCommentHistoryEntry

 import de.uapcore.lightpit.entities.IssueHistoryEntry

 import de.uapcore.lightpit.types.IssueHistoryType

 import de.uapcore.lightpit.viewmodel.CommentDiff

 import de.uapcore.lightpit.viewmodel.IssueDiff

 import de.uapcore.lightpit.viewmodel.IssueFeed

 import de.uapcore.lightpit.viewmodel.IssueFeedEntry

 import jakarta.servlet.annotation.WebServlet

 import java.text.SimpleDateFormat

 @WebServlet(urlPatterns = ["/feed/*"])

 class FeedServlet : AbstractServlet() {

     init {

         get("/%project/issues.rss", this::issues)

     }

     val diffGenerator by lazyOf(DiffRowGenerator.create()

         .showInlineDiffs(true)

         .mergeOriginalRevised(true)

         .inlineDiffByWord(true)

         .oldTag { start -> if (start) "<strike style=\"color:red\">" else "</strike>" }

         .newTag { start -> if (start) "<i style=\"color: green\">" else "</i>" }

         .build()

     )

     private fun fullContent(data: IssueCommentHistoryEntry) =

         CommentDiff(

             data.issueid,

             data.commentid,

             data.subject,

             data.comment.replace("\r", "")

         )

     private fun diffContent(cur: IssueCommentHistoryEntry, next: IssueCommentHistoryEntry) =

         CommentDiff(

             cur.issueid,

             cur.commentid,

             cur.subject,

             diffGenerator.generateDiffRows(

                 next.comment.replace("\r", "").split('\n'),

                 cur.comment.replace("\r", "").split('\n')

             ).joinToString("\n", transform = DiffRow::getOldLine)

         )

     private fun fullContent(issue: IssueHistoryEntry) = IssueDiff(

         issue.issueid,

         issue.subject,

         issue.component,

         issue.status.name,

         issue.category.name,

         issue.subject,

         issue.description.replace("\r", ""),

         issue.assignee,

         issue.eta?.let { SimpleDateFormat("dd.MM.yyyy").format(it) } ?: "",

         issue.affected,

         issue.resolved

     )

     private fun diffContent(cur: IssueHistoryEntry, next: IssueHistoryEntry): IssueDiff {

         val prev = fullContent(next)

         val diff = fullContent(cur)

         val result = diffGenerator.generateDiffRows(

             listOf(

                 prev.subject, prev.component, prev.status,

                 prev.category, prev.assignee, prev.eta, prev.affected, prev.resolved

             ),

             listOf(

                 diff.subject, diff.component, diff.status,

                 diff.category, diff.assignee, diff.eta, diff.affected, diff.resolved

             )

         )

         diff.subject = result[0].oldLine

         diff.component = result[1].oldLine

         diff.status = result[2].oldLine

         diff.category = result[3].oldLine

         diff.assignee = result[4].oldLine

         diff.eta = result[5].oldLine

         diff.affected = result[6].oldLine

         diff.resolved = result[7].oldLine

         diff.description = diffGenerator.generateDiffRows(

             prev.description.split('\n'),

             diff.description.split('\n')

         ).joinToString("\n", transform = DiffRow::getOldLine)

         return diff

     }

     /**

      * Generates the feed entries.

      * Assumes that [issueEntries] and [commentEntries] are already sorted by timestamp (descending).

      */

     private fun generateFeedEntries(

         issueEntries: List<IssueHistoryEntry>,

         commentEntries: List<IssueCommentHistoryEntry>

     ): List<IssueFeedEntry> =

         (generateIssueFeedEntries(issueEntries) + generateCommentFeedEntries(commentEntries)).sortedByDescending { it.time }

     private fun generateIssueFeedEntries(entries: List<IssueHistoryEntry>): List<IssueFeedEntry> =

         if (entries.isEmpty()) {

             emptyList()

         } else {

             entries.groupBy { it.issueid }.mapValues { (_, history) ->

                 history.zipWithNext().map { (cur, next) ->

                     IssueFeedEntry(

                         cur.time, cur.type, issue = diffContent(cur, next)

                     )

                 }.plus(

                     history.last().let { IssueFeedEntry(it.time, it.type, issue = fullContent(it)) }

                 )

             }.flatMap { it.value }

         }

     private fun generateCommentFeedEntries(entries: List<IssueCommentHistoryEntry>): List<IssueFeedEntry> =

         if (entries.isEmpty()) {

             emptyList()

         } else {

             entries.groupBy { it.commentid }.mapValues { (_, history) ->

                 history.zipWithNext().map { (cur, next) ->

                     IssueFeedEntry(

                         cur.time, cur.type, comment = diffContent(cur, next)

                     )

                 }.plus(

                     history.last().let { IssueFeedEntry(it.time, it.type, comment = fullContent(it)) }

                 )

             }.flatMap { it.value }

         }

     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 assignees = http.param("assignee")?.split(',')

         val comments = http.param("comments") ?: "all"

         val days = http.param("days")?.toIntOrNull() ?: 30

         val issuesFromDb = dao.listIssueHistory(project.id, days)

         val issueHistory = if (assignees == null) issuesFromDb else

             issuesFromDb.filter { assignees.contains(it.currentAssignee) }

         val commentsFromDb = dao.listIssueCommentHistory(project.id, days)

         val commentHistory = when (comments) {

             "all" -> commentsFromDb

             "new" -> commentsFromDb.filter { it.type == IssueHistoryType.NewComment }

             else -> emptyList()

         }

         http.view = IssueFeed(project, generateFeedEntries(issueHistory, commentHistory))

         http.renderFeed("issues-feed")

     }

 }