src/main/kotlin/de/uapcore/lightpit/entities/Issue.kt

/*
 * Copyright 2020 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.entities

import java.sql.Date
import java.sql.Timestamp
import java.time.Instant
import kotlin.math.roundToInt

data class IssueStatusPhase(val number: Int) {
    companion object {
        val Open = IssueStatusPhase(0)
        val WorkInProgress = IssueStatusPhase(1)
        val Done = IssueStatusPhase(2)
    }
}

enum class IssueStatus(val phase: IssueStatusPhase) {
    InSpecification(IssueStatusPhase.Open),
    ToDo(IssueStatusPhase.Open),
    Scheduled(IssueStatusPhase.Open),
    InProgress(IssueStatusPhase.WorkInProgress),
    InReview(IssueStatusPhase.WorkInProgress),
    Done(IssueStatusPhase.Done),
    Rejected(IssueStatusPhase.Done),
    Withdrawn(IssueStatusPhase.Done),
    Duplicate(IssueStatusPhase.Done);
}

enum class IssueCategory {
    Feature, Improvement, Bug, Task, Test
}

data class Issue(var id: Int) {

    var project: Project? = null
    var component: Component? = null

    var status = IssueStatus.InSpecification
    var category = IssueCategory.Feature

    var subject: String? = null
    var description: String? = null
    var assignee: User? = null

    var affectedVersions = emptyList<Version>()
    var resolvedVersions = emptyList<Version>()

    var created: Timestamp = Timestamp.from(Instant.now())
    var updated: Timestamp = Timestamp.from(Instant.now())
    var eta: Date? = null

    /**
     * An issue is overdue, if it is not done and the ETA is before the current time.
     */
    val overdue get() = status.phase != IssueStatusPhase.Done && eta?.before(Date(System.currentTimeMillis())) ?: false
}

class IssueSummary {
    var open = 0
    var active = 0
    var done = 0

    val total get() = open + active + done

    val openPercent get() = 100 - activePercent - donePercent
    val activePercent get() = if (total > 0) (100f * active / total).roundToInt() else 0
    val donePercent get() = if (total > 0) (100f * done / total).roundToInt() else 100

    /**
     * Adds the specified issue to the summary by incrementing the respective counter.
     * @param issue the issue
     */
    fun add(issue: Issue) {
        when (issue.status.phase) {
            IssueStatusPhase.Open -> open++
            IssueStatusPhase.WorkInProgress -> active++
            IssueStatusPhase.Done -> done++
        }
    }
}