module SRTParser

# File lib/Slavkata.rb, line 82
def duration file_path
        duration = 0.0
        first_line_state = 0
        last_line = 0
        first_line = 0
        file = File.open(file_path)
        file.each_line do |line|
                if line =~ /[>]/ && first_line_state == 0
                        time = line.byteslice(0,12)
                        hours = time.byteslice(0,2).to_i
                        minutes = time.byteslice(3,2).to_i
                        seconds = time.byteslice(6,2).to_i
                        miliseconds = time.byteslice(9,3).to_i
                        first_line_state = 1
                        minutes += hours*60
                        seconds += minutes*60
                        first_line = seconds.to_f + (miliseconds.to_f/1000)
                end
                if line =~ /[>]/
                        time = line.byteslice(15,12)
                        hours = time.byteslice(0,2).to_i
                        minutes = time.byteslice(3,2).to_i
                        seconds = time.byteslice(6,2).to_i
                        miliseconds = time.byteslice(9,2).to_i
                        minutes += hours*60
                        seconds += minutes*60
                        last_line = seconds.to_f + (miliseconds.to_f/1000)
                end
        end
        duration += last_line - first_line
        return duration.round(2)
end

# File lib/Slavkata.rb, line 45
def   max_symbols_per_line file_path
        max_symbols_per_line = 0
        count = 0
        file = File.open(file_path)
        file.each_line do |line|
                line = line.gsub(/[-0-9:,>]/,'')
                if line != ''
                        count = line.scan(/[\~\!\@\#\$\%\^\&\*\(\)\-\{\}\[\]\|\"\:\>\<\?\/]/).count
                        if         max_symbols_per_line < count
                                max_symbols_per_line = count
                        end        
                end
        end
        return max_symbols_per_line
end

# File lib/Slavkata.rb, line 6
def number_of_lines file_path
        file = File.open(file_path)
        number_of_lines = 0
        file.each_line do |line|
                line = line.gsub /[-0-9:,>\n]/,''
                if line != ""
                        number_of_lines += 1
                end
        end
        return number_of_lines
end

# File lib/Slavkata.rb, line 60
def number_of_sentences file_path
        number_of_sentences = 0
        file = File.open(file_path)
        file.each_line do |line|
                line = line.gsub(/[-0-9:,>]/,'')
                if line != ''
                        line = line.split
                        line.each do |word|
                                if word =~ /[^A-Z]*/
                                        state = 1
                                end
                                if state == 1
                                        if word =~ (/[. ? !]/)
                                                state = 0
                                                number_of_sentences += 1
                                        end
                                end
                        end
                end
        end
        return number_of_sentences
end

# File lib/Slavkata.rb, line 114
def number_of_subtitles file_path
        number_of_subtitles = 0
        file = File.open(file_path)
        file.each_line do |line|
                if line.scan(/[0-9]/).count > 17
                        number_of_subtitles += 1
                end
        end
        return number_of_subtitles
end

# File lib/Slavkata.rb, line 31
def number_of_symbols file_path
        file = File.open(file_path)
        number_of_symbols = 0
        file.each_line do |line|
                words = line.split
                words.each do |word|
                        word = word.gsub /[-0-9:,>]/,''
                        if count = word.scan(/[\~\!\@\#\$\%\^\&\*\(\)\-\{\}\[\]\|\"\:\>\<\?\/]/).count
                                number_of_symbols += count
                        end
                end
        end
        return number_of_symbols
end

# File lib/Slavkata.rb, line 17
def number_of_words file_path
        file = File.open(file_path)
        number_of_words = 0
        file.each_line do |line|
                words = line.split
                words.each do |word|
                        word = word.gsub /[-0-9:,>]/,''
                        if word != ""
                                number_of_words += 1
                        end
                end
        end
        return number_of_words
end

# File lib/Slavkata.rb, line 3
def parse_file path_to_file
        file_path = path_to_file
        final = Hash.new(0)
        def number_of_lines file_path
                file = File.open(file_path)
                number_of_lines = 0
                file.each_line do |line|
                        line = line.gsub /[-0-9:,>\n]/,''
                        if line != ""
                                number_of_lines += 1
                        end
                end
                return number_of_lines
        end
        def number_of_words file_path
                file = File.open(file_path)
                number_of_words = 0
                file.each_line do |line|
                        words = line.split
                        words.each do |word|
                                word = word.gsub /[-0-9:,>]/,''
                                if word != ""
                                        number_of_words += 1
                                end
                        end
                end
                return number_of_words
        end
        def number_of_symbols file_path
                file = File.open(file_path)
                number_of_symbols = 0
                file.each_line do |line|
                        words = line.split
                        words.each do |word|
                                word = word.gsub /[-0-9:,>]/,''
                                if count = word.scan(/[\~\!\@\#\$\%\^\&\*\(\)\-\{\}\[\]\|\"\:\>\<\?\/]/).count
                                        number_of_symbols += count
                                end
                        end
                end
                return number_of_symbols
        end
        def   max_symbols_per_line file_path
                max_symbols_per_line = 0
                count = 0
                file = File.open(file_path)
                file.each_line do |line|
                        line = line.gsub(/[-0-9:,>]/,'')
                        if line != ''
                                count = line.scan(/[\~\!\@\#\$\%\^\&\*\(\)\-\{\}\[\]\|\"\:\>\<\?\/]/).count
                                if         max_symbols_per_line < count
                                        max_symbols_per_line = count
                                end        
                        end
                end
                return max_symbols_per_line
        end
        def number_of_sentences file_path
                number_of_sentences = 0
                file = File.open(file_path)
                file.each_line do |line|
                        line = line.gsub(/[-0-9:,>]/,'')
                        if line != ''
                                line = line.split
                                line.each do |word|
                                        if word =~ /[^A-Z]*/
                                                state = 1
                                        end
                                        if state == 1
                                                if word =~ (/[. ? !]/)
                                                        state = 0
                                                        number_of_sentences += 1
                                                end
                                        end
                                end
                        end
                end
                return number_of_sentences
        end
        def duration file_path
                duration = 0.0
                first_line_state = 0
                last_line = 0
                first_line = 0
                file = File.open(file_path)
                file.each_line do |line|
                        if line =~ /[>]/ && first_line_state == 0
                                time = line.byteslice(0,12)
                                hours = time.byteslice(0,2).to_i
                                minutes = time.byteslice(3,2).to_i
                                seconds = time.byteslice(6,2).to_i
                                miliseconds = time.byteslice(9,3).to_i
                                first_line_state = 1
                                minutes += hours*60
                                seconds += minutes*60
                                first_line = seconds.to_f + (miliseconds.to_f/1000)
                        end
                        if line =~ /[>]/
                                time = line.byteslice(15,12)
                                hours = time.byteslice(0,2).to_i
                                minutes = time.byteslice(3,2).to_i
                                seconds = time.byteslice(6,2).to_i
                                miliseconds = time.byteslice(9,2).to_i
                                minutes += hours*60
                                seconds += minutes*60
                                last_line = seconds.to_f + (miliseconds.to_f/1000)
                        end
                end
                duration += last_line - first_line
                return duration.round(2)
        end   
        def number_of_subtitles file_path
                number_of_subtitles = 0
                file = File.open(file_path)
                file.each_line do |line|
                        if line.scan(/[0-9]/).count > 17
                                number_of_subtitles += 1
                        end
                end
                return number_of_subtitles
        end
        final["number_of_words"] = number_of_words file_path
        final["number_of_symbols"] = number_of_symbols file_path
        final["number_of_lines"] = number_of_lines file_path
        final["average_symbols_per_line"] = ((number_of_symbols file_path ).to_f/(number_of_lines file_path).to_f).round(2)
        final["max_symbols_per_line"] = max_symbols_per_line file_path
        final["number_of_sentences"] = number_of_sentences file_path
        final["average_symbols_per_sentence"] = ((number_of_symbols file_path).to_f / (number_of_sentences file_path).to_f).round(2)
        final["duration"] = duration file_path.round
        final["average_duration"] = ((duration file_path).to_f / (number_of_subtitles file_path).to_f).round(2)
        return final
end