utilities.gradle

// Author: UpcraftLP
// Source: https://github.com/OnyxStudios/Gradle-Scripts/

def getProjectProperty(String name) {
    return project.findProperty(name) ?: System.getenv(name)
}

def getSystemProperty(String name) {
    return System.getenv(name) ?: project.findProperty(name)
}

String getChangelogText() {
    def changelogFile = project.file("changelog.md")
    String str = ''
    if (!changelogFile.exists()) {
        println("No changelog file found, creating one at \"" + changelogFile.getAbsolutePath() + "\"")
        try {
            changelogFile.getParentFile().mkdirs()
            changelogFile.createNewFile()
            String newText = '------------------------------------------------------\n' +
                'Version ' + project.version + '\n' +
                '------------------------------------------------------\n' +
                'Additions\n' +
                '- None\n' +
                '\n' +
                'Changes\n' +
                '- None\n' +
                '\n' +
                'Bug Fixes\n' +
                '- None\n'
            String oldText = changelogFile.getText()
            changelogFile.setText(newText + oldText)
            return str
        }
        catch (IOException e) {
            println("Unable to write changelog file: " + e.getMessage())
            e.printStackTrace()
            return ''
        }
    }
    String separator = '---'
    int lineCount = 0
    boolean done = false
    changelogFile.eachLine {
        if (done || it == null) {
            return
        }
        if (lineCount < 3) {
            lineCount++
            if (it.startsWith(separator)) {
                return ""
            }
        }
        if (!it.startsWith(separator)) {
            str += "$it" + (lineCount < 3 ? ':\n\n' : '\n')
            return
        }
        done = true // once we go past the first version block, parse no more
    }
    str += "\n\n see full changelog [here](${findProperty("changelog_base_url")}/${project.mod_version}/changelog.md \"Changelog\")"
    return str
}

// Export methods by turning them into closures
ext {
    getProjectProperty = this.&getProjectProperty
    getSystemProperty = this.&getSystemProperty
    getChangelogText = this.&getChangelogText
}