import com.atlassian.jira.component.ComponentAccessor
import com.atlassian.jira.event.type.EventDispatchOption
import com.atlassian.jira.issue.MutableIssue
import com.atlassian.jira.user.ApplicationUser

String issueDescription = event.issue.description
ApplicationUser actor = ComponentAccessor.userManager.getUserByName("automation-agent")

if (issueDescription ==~ /(?siu).*(?:\{color:[#a-z0-9]+}|\{color}).*/) {
    def regexEmptySpaces = /(?siu)(?:\{color:[#a-z0-9]+}|\{color}|[ \p{Zs}]+)*/
    def regexEmptyLines = /(?siu)(?:\{color:[#a-z0-9]+}|\{color}|[\s\p{Z}]+)+/
    def regexEmailSignatureLogo = /(?<=[\r\n])/ + regexEmptySpaces + /!(?:/ +
        /image[0-9]+\.[a-z]+(?:\|thumbnail)?/ +
        /|https?:\/\/mail\.stoloto\.ru\/res\/StolotoCJSC\.png/ +
        /)!/ + regexEmptySpaces + /(?:[\r\n]{1,2}|\p{Z}|$)/


    def regexEmailSignatures = [
        stoloto: (/(?siu)(?<=[\r\n])/ + regexEmptyLines +
    		/(?:\[\{color:[#a-z0-9]+\})?(?:–{3,}|-{3,}|_{3,}|\>{2,})[\s\p{Z}]*С уважением/ +
    		/.*?\[/ + regexEmptySpaces + /www\.stoloto\.ru/ + regexEmptySpaces +
    		/\|https?:\/\/www\.stoloto\.ru\/?\]/ + regexEmptyLines +
    		/(?:/ + regexEmailSignatureLogo + /)?(?=[\r\n])/),
    ]
    for (regexp in regexEmailSignatures) {
        issueDescription = issueDescription.replaceAll(regexp.value, "")
    }

    def regexMessageHistoryQuote = /(?siu)(?:/ +
        /\{quote}.*\{quote}/ +
        /|[\r\n]+\|\{color:[#a-z0-9]+}.*jira-generated-image-avatar.*Atlassian logo\{color:[#a-z0-9]+}.*\{color}\|/ + regexEmptyLines +
        /|\{color:[#a-z0-9]+}—-—-—-—\{color}.*\|https:\/\/jira\.stoloto\.ru\/servicedesk\/customer\/portals]/ + regexEmptyLines +
        /|\{color:[#a-z0-9]+}—-—-—-—\{color}.*(?:jira-generated-image-static-information-|jira-generated-image-avatar-).*/ +
        /)/

    issueDescription = issueDescription.replaceAll(regexMessageHistoryQuote, '')

    def regexEmailHeader = /(?siu)(?<=[\r\n])/ + regexEmptyLines +
        /[\s*]+?(?:from|от|отправитель)(?:\([a-zа-я]\))?:\*?([^\r\n]*)[\r\n]+/ +
        /(?:[\s*]+?(?:sent|отправлено|to|кому|получатель|cc|копия|bcc|скрытая(?: копия)?)(?:\([a-zа-я]\))?:\*?[^\r\n]*[\r\n]+)+/ +
        /[\s*]+?(?:subject|тема)(?:\([a-zа-я]\))?:\*?[^\r\n]*/ +
        regexEmptyLines + /(?=[\r\n]|$)/

    issueDescription = issueDescription.replaceAll(regexEmailHeader + /(?=$)/, "")
    issueDescription = issueDescription.replaceAll(
        regexEmailHeader + /(?:/ + regexEmptyLines + /|/ + regexEmailSignatureLogo + /)+(?=[\r\n]{1,2}|$)/, ""
    )
    issueDescription = issueDescription.replaceAll(regexEmailHeader, "<hr />{color:skyblue}\$1{color}\n")
    issueDescription = issueDescription.replaceAll(/^/ + regexEmptyLines, '')
    issueDescription = issueDescription.replaceAll(/(?siu)(?:\{color:[#a-z0-9]+}|\{color}|----|[\s\p{Z}]+)+$/, '')
} else if (issueDescription ==~ /(?siu).*(?:<p><font color="[#a-z0-9]+">.*?<\/font><\/p>).*/) {
    def regexEmptySpaces = /(?siu)(?:/ +
        /<p><font color="[#a-z0-9]+"><\/font><\/p>/ +
        /|<p><font color="[#a-z0-9]+">&nbsp;<\/font><\/p>/ +
        /|<p><\/p>/ +
        /|<p>&nbsp;<\/p>/ +
        /)*/

    def regexEmptyLines = /(?siu)(?:/ +
        /<p><font color="[#a-z0-9]+"><\/font><\/p>/ +
        /|<p><font color="[#a-z0-9]+">&nbsp;<\/font><\/p>/ +
        /|<p><\/p>/ +
        /|<p>&nbsp;<\/p>/ +
        /|(?<=[\r\n])(?:/ + regexEmptySpaces + /|[ \p{Zs}])*<br(?: \/)?>(?:/ + regexEmptySpaces + /|[ \p{Zs}])*(?=[\r\n])/ +
        /)*/


    def regexEmailSignatures = [
        stoloto: (/(?siu)\<p\>\<font\ color\=\"[#a-z0-9]+\"\>(?:–{3,}|-{3,}|_{3,}|\>{2,})\<br(?:\ \/)?\>/ +
                  /[\ \r\n]*С уважением,\<br(?:\ \/)?\>/ +
                  /.*?\<\/p\>/),
    ]
    for (regexp in regexEmailSignatures) {
        issueDescription = issueDescription.replaceAll(regexp.value, "")
    }

    def regexEmailHeader = /(?siu)<p>(?:<br(?: \/)?>)?/ +
        /[ \r\n]*(?:<b>)?(?:from|от|отправитель)(?:\([a-zа-я]\))?:(?:<b>)?([^\r\n]*?)<br(?: \/)?>/ +
        /(?:[ \r\n]*(?:<b>)?(?:sent|отправлено|to|кому|получатель|cc|копия|bcc|скрытая(?: копия)?)(?:\([a-zа-я]\))?:(?:<b>)?[^\r\n]*?<br(?: \/)?>)+/ +
        /[ \r\n]*(?:<b>)?(?:subject|тема)(?:\([a-zа-я]\))?:(?:<b>)?[^\r\n]*?/ +
        /<\/p>/

    issueDescription = issueDescription.replaceAll(regexEmptyLines, "")
    issueDescription = issueDescription.replaceAll(regexEmailHeader + /(?=$)/, "")
    issueDescription = issueDescription.replaceAll(regexEmailHeader, "<br><hr /><p style=\"color: skyBlue;\">\$1</p>")
} else {
    log.warn('@TODO: Simple Text - develop handler')
}
MutableIssue mutableIssue = event.issue as MutableIssue
mutableIssue.description = issueDescription

ComponentAccessor.issueManager.updateIssue(actor, mutableIssue, EventDispatchOption.DO_NOT_DISPATCH, false)