1 files changed, 347 insertions, 0 deletions
diff --git a/src/main/kotlin/at/hannibal2/skyhanni/changelog/Main.kt b/src/main/kotlin/at/hannibal2/skyhanni/changelog/Main.kt
new file mode 100644
index 0000000..8f62f34
--- /dev/null
+++ b/src/main/kotlin/at/hannibal2/skyhanni/changelog/Main.kt
@@ -0,0 +1,347 @@
+package org.example
+
+import com.google.gson.GsonBuilder
+import com.google.gson.JsonArray
+
+import java.net.URL
+import java.time.Instant
+import java.util.regex.Matcher
+import java.util.regex.Pattern
+import kotlin.system.exitProcess
+
+enum class Category(val changeLogName: String, val prTitle: String) {
+    NEW("New Features", "Feature"),
+    IMPROVEMENT("Improvements", "Improvement"),
+    FIX("Fixes", "Fix"),
+    INTERNAL("Technical Details", "Backend"),
+    REMOVED("Removed Features", "Removed Feature"),
+    ;
+}
+
+//val allowedCategories = listOf("New Features", "Improvements", "Fixes", "Technical Details", "Removed Features")
+
+val categoryPattern = "## Changelog (?<category>.*)".toPattern()
+val changePattern = "\\+ (?<text>.*) - (?<author>.*)".toPattern()
+val extraInfoPattern = " {4}\\* (?<text>.*)".toPattern()
+val illegalStartPattern = "^[-=*+ ].*".toPattern()
+
+fun getTextFromUrl(urlString: String): List<String> {
+    val url = URL(urlString)
+    val connection = url.openConnection()
+    val inputStream = connection.getInputStream()
+    val text = mutableListOf<String>()
+
+    inputStream.bufferedReader().useLines { lines ->
+        lines.forEach {
+            text.add(it)
+        }
+    }
+
+    return text
+}
+
+enum class WhatToDo {
+    NEXT_BETA, OPEN_PRS,
+    ;
+}
+
+fun main() {
+    val firstPr = 1168
+    val hideWhenError = true
+    val fullVersion = "0.24"
+    val beta = 13
+
+    val whatToDo = WhatToDo.NEXT_BETA
+
+    @Suppress("KotlinConstantConditions")
+    val url = when (whatToDo) {
+        WhatToDo.NEXT_BETA -> "https://api.github.com/repos/hannibal002/SkyHanni/pulls?state=closed&sort=updated&direction=desc&per_page=50"
+        WhatToDo.OPEN_PRS -> "https://api.github.com/repos/hannibal002/SkyHanni/pulls?state=open&sort=updated&direction=desc&per_page=30"
+    }
+
+    val data = getTextFromUrl(url).joinToString("")
+    val gson = GsonBuilder().create()
+    val fromJson = gson.fromJson(data, JsonArray::class.java)
+    val prs = fromJson.map { gson.fromJson(it, PullRequest::class.java) }
+    readPrs(prs, firstPr, hideWhenError, whatToDo, fullVersion, beta)
+}
+
+fun readPrs(
+    prs: List<PullRequest>,
+    firstPr: Int,
+    hideWhenError: Boolean,
+    whatToDo: WhatToDo,
+    fullVersion: String,
+    beta: Int,
+) {
+    val allChanges = mutableListOf<Change>()
+    val errors = mutableListOf<String>()
+    var excluded = 0
+    var done = 0
+    var wrongPrName = 0
+    // TODO find better solution for this sorting logic
+    val filtered = when (whatToDo) {
+        WhatToDo.NEXT_BETA -> prs.filter { it.mergedAt != null }
+            .map { it to it.mergedAt }
+
+        WhatToDo.OPEN_PRS -> prs
+            .map { it to it.updatedAt }
+
+    }
+        .map { it.first to Long.MAX_VALUE - Instant.parse(it.second).toEpochMilli() }
+        .sortedBy { it.second }
+        .map { it.first }
+
+    println("")
+    for (pr in filtered) {
+        val number = pr.number
+        val prLink = pr.htmlUrl
+        val body = pr.body
+        val title = pr.title
+
+        val description = body?.split(System.lineSeparator()) ?: emptyList()
+        if (description.isNotEmpty()) {
+            val last = description.last()
+            if (last == "exclude_from_changelog") {
+                println("")
+                println("Excluded #$number ($prLink)")
+                excluded++
+                continue
+            }
+        }
+        try {
+            val newChanges = parseChanges(description, prLink)
+            if (hasWrongPrName(prLink, title, newChanges)) {
+                wrongPrName++
+            }
+            allChanges.addAll(newChanges)
+            done++
+        } catch (t: Throwable) {
+            errors.add("Error in #$number ($prLink)\n${t.message}")
+            if (hasWrongPrName(prLink, title, emptyList())) {
+                wrongPrName++
+            }
+        }
+        if (whatToDo == WhatToDo.NEXT_BETA) {
+            if (number == firstPr) break
+        }
+    }
+    println("")
+
+    for (error in errors) {
+        println(" ")
+        println(error)
+    }
+
+    for (type in OutputType.entries) {
+        print(allChanges, type, fullVersion, beta)
+    }
+    println("")
+    if (excluded > 0) {
+        println("Excluded $excluded PRs.")
+    }
+    val errorSize = errors.size
+    if (errorSize > 0) {
+        println("Found $errorSize PRs with errors!")
+    }
+    if (wrongPrName > 0) {
+        println("Found $wrongPrName PRs with wrong names!")
+    }
+    println("Loaded $done PRs correctly.")
+    if (errorSize > 0) {
+        if (hideWhenError) {
+            exitProcess(-1)
+        }
+    }
+}
+
+fun hasWrongPrName(prLink: String, title: String, newChanges: List<Change>): Boolean {
+    val hasFix = newChanges.any { it.category == Category.FIX }
+    for (category in Category.entries) {
+        if (newChanges.any { it.category == category }) {
+            var start = category.prTitle
+            if (hasFix && category != Category.FIX) {
+                start += " + Fix"
+            }
+            start += ": "
+            val wrongName = !title.startsWith(start)
+            if (wrongName) {
+                println("wrong pr title!")
+                println("found: '$title'")
+                println("should start with $start")
+                println("link: $prLink")
+                println(" ")
+            }
+            return wrongName
+        }
+    }
+
+    val prefix = "Wrong/broken Changelog: "
+    if (!title.startsWith(prefix)) {
+        println("wrong pr title!")
+        println("found: '$title'")
+        println("should start with $prefix")
+        println("link: $prLink")
+        println(" ")
+        return true
+    }
+
+    return false
+}
+
+enum class OutputType {
+    DISCORD_INTERNAL, GITHUB, DISCORD_PUBLIC,
+}
+
+private fun print(
+    allChanges: MutableList<Change>,
+    outputType: OutputType,
+    fullVersion: String,
+    beta: Int,
+) {
+    val extraInfoPrefix = when (outputType) {
+        OutputType.DISCORD_PUBLIC -> " = "
+        OutputType.GITHUB -> "   * "
+        OutputType.DISCORD_INTERNAL -> " - "
+    }
+    val list = createPrint(outputType, allChanges, extraInfoPrefix, fullVersion, beta)
+    val border = "================================================================================="
+    println("")
+    println("outputType ${outputType.name.lowercase()}:")
+    val totalLength = list.sumOf { it.length }
+    if (outputType != OutputType.GITHUB) {
+        println("$totalLength/2000 characters used")
+    }
+    println(border)
+    for (line in list) {
+        println(line)
+    }
+    println(border)
+}
+
+private fun createPrint(
+    outputType: OutputType,
+    allChanges: MutableList<Change>,
+    extraInfoPrefix: String,
+    fullVersion: String,
+    beta: Int,
+): MutableList<String> {
+    val list = mutableListOf<String>()
+    list.add("## Version $fullVersion Beta $beta")
+
+    for (category in Category.entries) {
+        if (outputType == OutputType.DISCORD_PUBLIC && category == Category.INTERNAL) continue
+        val changes = allChanges.filter { it.category == category }
+        if (changes.isEmpty()) continue
+        list.add("### " + category.changeLogName)
+        if (outputType == OutputType.DISCORD_PUBLIC) {
+            list.add("```diff")
+        }
+        for (change in changes) {
+            val pr = when (outputType) {
+                OutputType.DISCORD_PUBLIC -> ""
+                OutputType.GITHUB -> " (${change.prLink})"
+                OutputType.DISCORD_INTERNAL -> " [PR](<${change.prLink}>)"
+            }
+            val changePrefix = getChangePrefix(category, outputType)
+            list.add("$changePrefix${change.text} - ${change.author}$pr")
+            for (s in change.extraInfo) {
+                list.add("$extraInfoPrefix$s")
+            }
+        }
+        if (outputType == OutputType.DISCORD_PUBLIC) {
+            list.add("```")
+        }
+    }
+    if (outputType == OutputType.DISCORD_PUBLIC) {
+        val root = "https://github.com/hannibal002/SkyHanni"
+        val releaseLink = "$root/releases/tag/$fullVersion.Beta.$beta>"
+        list.add("For a full changelog, including technical details, see the [GitHub release](<$releaseLink)")
+
+        val downloadLink = "$root/releases/download/$fullVersion.Beta.$beta/SkyHanni-$fullVersion.Beta.$beta.jar"
+        list.add("Download link: $downloadLink")
+    }
+
+    return list
+}
+
+fun getChangePrefix(category: Category, outputType: OutputType): String = when (outputType) {
+    OutputType.DISCORD_INTERNAL -> "- "
+    OutputType.GITHUB -> "+ "
+    OutputType.DISCORD_PUBLIC -> when (category) {
+        Category.NEW -> "+ "
+        Category.IMPROVEMENT -> "+ "
+        Category.FIX -> "~ "
+        Category.REMOVED -> "- "
+        Category.INTERNAL -> error("internal not in discord public")
+    }
+}
+
+inline fun <T> Pattern.matchMatcher(text: String, consumer: Matcher.() -> T) =
+    matcher(text).let { if (it.matches()) consumer(it) else null }
+
+@Suppress("IMPLICIT_NOTHING_TYPE_ARGUMENT_IN_RETURN_POSITION")
+fun parseChanges(
+    description: List<String>,
+    prLink: String,
+): List<Change> {
+    var currentCategory: Category? = null
+    var currentChange: Change? = null
+    val changes = mutableListOf<Change>()
+    for (line in description) {
+        if (line == "") {
+            currentChange = null
+            currentCategory = null
+            continue
+        }
+
+        categoryPattern.matchMatcher(line) {
+            val categoryName = group("category")
+            currentCategory = getCategoryByLogName(categoryName) ?: error("unknown category: '$categoryName'")
+            currentChange = null
+            continue
+        }
+
+        val category = currentCategory ?: continue
+
+        changePattern.matchMatcher(line) {
+            val author = group("author")
+            if (author == "your_name_here") {
+                error("no author name")
+            }
+            val text = group("text")
+            if (illegalStartPattern.matcher(text).matches()) {
+                error("illegal start at change: '$text'")
+            }
+            currentChange = Change(text, category, prLink, author).also {
+                changes.add(it)
+            }
+            continue
+        }
+
+        extraInfoPattern.matchMatcher(line) {
+            val change = currentChange ?: error("Found extra info without change: '$line'")
+            val text = group("text")
+            if (illegalStartPattern.matcher(text).matches()) {
+                error("illegal start at extra info: '$text'")
+            }
+            change.extraInfo.add(text)
+            continue
+        }
+        error("found unexpected line: '$line'")
+    }
+
+    if (changes.isEmpty()) {
+        error("no changes found")
+    }
+
+    return changes
+}
+
+fun getCategoryByLogName(name: String): Category? = Category.entries.find { it.changeLogName == name }
+
+//class Category(val name: String)
+
+class Change(val text: String, val category: Category, val prLink: String, val author: String) {
+    val extraInfo = mutableListOf<String>()
+}