// CodeMirror, copyright (c) by Marijn Haverbeke and others
// Distributed under an MIT license: https://codemirror.net/LICENSE

;(function (mod) {
    if (typeof exports == 'object' && typeof module == 'object')
        // CommonJS
        mod(require('../../lib/codemirror'))
    else if (typeof define == 'function' && define.amd)
        // AMD
        define(['../../lib/codemirror'], mod)
    // Plain browser env
    else mod(CodeMirror)
})(function (CodeMirror) {
    'use strict'

    CodeMirror.defineMode('rpm-changes', function () {
        var headerSeparator = /^-+$/
        var headerLine = /^(Mon|Tue|Wed|Thu|Fri|Sat|Sun) (Jan|Feb|Mar|Apr|May|Jun|Jul|Aug|Sep|Oct|Nov|Dec)  ?\d{1,2} \d{2}:\d{2}(:\d{2})? [A-Z]{3,4} \d{4} - /
        var simpleEmail = /^[\w+.-]+@[\w.-]+/

        return {
            token: function (stream) {
                if (stream.sol()) {
                    if (stream.match(headerSeparator)) {
                        return 'tag'
                    }
                    if (stream.match(headerLine)) {
                        return 'tag'
                    }
                }
                if (stream.match(simpleEmail)) {
                    return 'string'
                }
                stream.next()
                return null
            },
        }
    })

    CodeMirror.defineMIME('text/x-rpm-changes', 'rpm-changes')

    // Quick and dirty spec file highlighting

    CodeMirror.defineMode('rpm-spec', function () {
        var arch = /^(i386|i586|i686|x86_64|ppc64le|ppc64|ppc|ia64|s390x|s390|sparc64|sparcv9|sparc|noarch|alphaev6|alpha|hppa|mipsel)/

        var preamble = /^[a-zA-Z0-9()]+:/
        var section =
            /^%(debug_package|package|description|prep|build|install|files|clean|changelog|preinstall|preun|postinstall|postun|pretrans|posttrans|pre|post|triggerin|triggerun|verifyscript|check|triggerpostun|triggerprein|trigger)/
        var control_flow_complex = /^%(ifnarch|ifarch|if)/ // rpm control flow macros
        var control_flow_simple = /^%(else|endif)/ // rpm control flow macros
        var operators = /^(\!|\?|\<\=|\<|\>\=|\>|\=\=|\&\&|\|\|)/ // operators in control flow macros

        return {
            startState: function () {
                return {
                    controlFlow: false,
                    macroParameters: false,
                    section: false,
                }
            },
            token: function (stream, state) {
                var ch = stream.peek()
                if (ch == '#') {
                    stream.skipToEnd()
                    return 'comment'
                }

                if (stream.sol()) {
                    if (stream.match(preamble)) {
                        return 'header'
                    }
                    if (stream.match(section)) {
                        return 'atom'
                    }
                }

                if (stream.match(/^\$\w+/)) {
                    return 'def'
                } // Variables like '$RPM_BUILD_ROOT'
                if (stream.match(/^\$\{\w+\}/)) {
                    return 'def'
                } // Variables like '${RPM_BUILD_ROOT}'

                if (stream.match(control_flow_simple)) {
                    return 'keyword'
                }
                if (stream.match(control_flow_complex)) {
                    state.controlFlow = true
                    return 'keyword'
                }
                if (state.controlFlow) {
                    if (stream.match(operators)) {
                        return 'operator'
                    }
                    if (stream.match(/^(\d+)/)) {
                        return 'number'
                    }
                    if (stream.eol()) {
                        state.controlFlow = false
                    }
                }

                if (stream.match(arch)) {
                    if (stream.eol()) {
                        state.controlFlow = false
                    }
                    return 'number'
                }

                // Macros like '%make_install' or '%attr(0775,root,root)'
                if (stream.match(/^%[\w]+/)) {
                    if (stream.match('(')) {
                        state.macroParameters = true
                    }
                    return 'keyword'
                }
                if (state.macroParameters) {
                    if (stream.match(/^\d+/)) {
                        return 'number'
                    }
                    if (stream.match(')')) {
                        state.macroParameters = false
                        return 'keyword'
                    }
                }

                // Macros like '%{defined fedora}'
                if (stream.match(/^%\{\??[\w \-\:\!]+\}/)) {
                    if (stream.eol()) {
                        state.controlFlow = false
                    }
                    return 'def'
                }

                //TODO: Include bash script sub-parser (CodeMirror supports that)
                stream.next()
                return null
            },
        }
    })

    CodeMirror.defineMIME('text/x-rpm-spec', 'rpm-spec')
})