require "chapmanchri_quotemachine2/version"

# module QuoteMachine
#   class Error < StandardError; end
#   # Your code goes here...
# end

# declare instance variables
def declare_instance_variables
    @poem = []
    @stanza_pick = 0
    @stanza_current = 0
    @section_current = 0
    @section_previous = "na"
    @section_next = "na"
    @phrase = []
end

def set_stanza_and_section
    stanza = pick_stanza
    @stanza_current = stanza
    @section_current = pick_section(stanza)
end

def set_phrase
    @phrase[0] = @section_current
end

def set_next_section
    if @section_current < (@poem[@stanza_current].length-1)
        @section_next = @section_current + 1
    end
    @section_next
end

def set_previous_section
    if @section_current > 1
        @section_previous = @section_current - 1
    end
    @section_previous
end


def read_poem(file_name)
    # text = File.read(file_name)
    File.read(file_name)
end

def convert_text_to_array(text)
    # text_array = text.split("\n")
    text.split("\n")
end


def create_final_poem_array(text_array)
    # Convert text_array into a new two dimensional array (@poem)
    # with each stanza it's own element in the
    # @poem array and each segment in the @poem element an element in the @poem 
    # element.
    stanza_num = 0
    section = 0
    text_array.each do |line|
        if line[0..1] == "&#" #the stanza number is after "&#"
            if stanza_num == 0 && @poem[0] == nil
                @poem[stanza_num] = [line[2..(line.length-1)]]
            else
                # "in writing stanza 2 or more"
                stanza_num +=1
                section = 0
                @poem[stanza_num] = [line[2..(line.length-1)]]
            end
        elsif line == "" #these are blank lines which tell you a new section is beginning
            section += 1
        else
            temp =  @poem[stanza_num][section]
            if temp.class == NilClass
                @poem[stanza_num][section] = line
            else
                @poem[stanza_num][section] = @poem[stanza_num][section] + "<br>" + line
            end
        end
    end
end


def pick_stanza
    # stanza = rand(0...(@poem.length))
    rand(0...(@poem.length))
end

def pick_section(stanza)
    sections =  @poem[stanza].length
    # section = rand(1...(sections))
    rand(1...(sections))
end

def show_current_section
    "<div class='current_section_in_text'>#{@poem[@stanza_current][@section_current]}</div>"
end

def show_previous_section
    if @section_current > 0
        "#{@poem[@stanza_current][@section_current - 1]}"
    end
end

def show_next_section
    if @section_current < (@poem[@stanza_current].length - 1)
        " #{@poem[@stanza_current][@section_current + 1]}"
    end
end

def show_entire_verse
    print_verse = ""
    @poem[@stanza_current].each_with_index do |segment, i|
        if i > 0
            if i == @section_current
                print_verse = print_verse + show_current_section
            elsif i == (@section_current + 1)
                print_verse = print_verse + segment
            else
                print_verse = print_verse + "<br><br>" + segment
            end
        end
    end
    print_verse
end

def show_entire_poem
    print_poem = ""
    @poem.each_with_index do |verse, v|
        verse.each_with_index do |segment, s|
            if s == @section_current && @stanza_current == v
                print_poem = print_poem + show_current_section
                # show_current_section
            else
                # puts segment
                # puts "\n"
                print_poem = print_poem + segment + "<br><br>"
            end
        end
    end
    print_poem
end

def clear_screen
    puts `clear`
end

def show_section
    @poem[@stanza_current][@section_current]
end


# Main Program

def main_program
    declare_instance_variables
    init_poem
    set_stanza_and_section
    set_phrase
    build_display
    # show_section 
    # display_interface
end

def build_display
    result_text = ""
    @phrase.each do |section|
        
        # Build For a stanza with only one section
        if @poem[@stanza_current].length == 2
            result_text = show_current_section
        end
        
        # Builds For a stanza with only two sections and only one phrase
        if @poem[@stanza_current].length == 3
            # if there is only one phrase
            if @phrase.length == 1
                #the phrase if the first phrase of the stanza
                if @phrase[0] == 1
                    result_text = "<p>#{show_current_section}</p>" +  "<form id='plus_next' action='/plus_next' method='post'><button class='form-submit' type='submit'>more...</button></form>"
                    #the phrase is the second phrase of the stanza
                elsif @phrase[0] == 2
                    result_text = "<div class='plus-minus'><form id='plus_previous' action='/plus_previous' method='post'><button class='form-submit' type='submit'>more...</button></form></div>#{show_current_section}"
                end
            end
        end

        # Builds for a Stanza with more than two sections and only one phrase
        if @poem[@stanza_current].length > 3
            if @phrase.length == 1
                if @phrase[0] == 1
                    result_text = "<p>#{show_current_section}</p>" +  "<form id='plus_next' action='/plus_next' method='post'><button class='form-submit' type='submit'>more...</button></form>"
                elsif (@phrase[0] >= 2) && @phrase[0] < @poem[@stanza_current].length - 1
                    result_text = "<div class='plus-minus'><form id='plus_previous' action='/plus_previous' method='post'><button class='form-submit' type='submit'>more...</button></form></div>" + "<p>#{show_current_section}</p>" +  "<form id='plus_next' action='/plus_next' method='post'><button class='form-submit' type='submit'>more...</button></form>"
                elsif @phrase[0] == @poem[@stanza_current].length - 1
                    result_text = "<div class='plus-minus'><form id='plus_previous' action='/plus_previous' method='post'><button class='form-submit' type='submit'>more...</button></form></div>#{show_current_section}"
                end
            end
        end
        
        # Builds for Stanza with more than two sections and more than one phrase
        if @poem[@stanza_current].length > 3
            if @phrase.length > 1
                # current_phrase is first in stanza and the second phrase is also displayed
                if @phrase[0] == 1 && @section_current == 1 && @phrase[1] == 2
                    result_text = "<p>#{show_current_section}</p><p>#{show_next_section}</p><div class='minus-button'><form id='minus_next' action='/minus_next' method='post'><button class='form-submit' type='submit'>less...</button></form></div>"
                end
                # current_phrase is the last phrase in the stanza and the previous phrase is also displayed
                if @phrase.last == @section_current && @phrase[@phrase.length - 2] == (@section_current - 1)
                    result_text = "<div class='minus-button'><form id='minus_previous' action='/minus_previous' method='post'><button class='form-submit' type='submit'>less...</button></form></div><p>#{show_previous_section}</p><p>#{show_current_section}</p>"
                end
                # there are two phrases in array, current_phrase is not first or last stanza,
                # and current_phrase > second phrase
                if @phrase.length == 2 && @section_current != 1 && @section_current != @poem[@stanza_current].length - 1
                    result_text = "<div class='minus-button'><form id='minus_previous' action='/minus_previous' method='post'><button class='form-submit' type='submit'>less...</button></form></div><p>#{show_previous_section}</p><p>#{show_current_section}</p><form id='plus_next' action='/plus_next' method='post'><button class='form-submit' type='submit'>more...</button></form>"
                end
                # there are two phrases in array, current_phrase is not first or last,
                # and current_phrase < second phrase
                if @phrase.length == 2 && @section_current != 1 \
                    && @section_current != @poem[@stanza_current].length - 1 \
                    && @phrase.last >  @section_current
                    result_text = "<div class='plus-minus'><form id='plus_previous' action='/plus_previous' method='post'><button class='form-submit' type='submit'>more...</button></form></div><p>#{show_current_section}</p><p>#{show_next_section}</p><div class='minus-button'><form id='minus_next' action='/minus_next' method='post'><button class='form-submit' type='submit'>less...</button></form></div>"
                end
                # three phrases in the phrase storage array
                if @phrase.length == 3
                    result_text = "<div class='minus-button'><form id='minus_previous' action='/minus_previous' method='post'><button class='form-submit' type='submit'>less...</button></form></div><p>#{show_previous_section}</p><p>#{show_current_section}</p><p>#{show_next_section}</p><div class='minus-button'><form id='minus_next' action='/minus_next' method='post'><button class='form-submit' type='submit'>less...</button></form></div>"
                end
            end
        end
        
    end
    # show result
    result_text
end

def init_poem
    declare_instance_variables
    text = read_poem('complete_verse.txt')
    text_array = convert_text_to_array(text)
    create_final_poem_array(text_array)
end

# run the program
puts Dir.pwd
# main_program

def test_method
  "text method"
end