package main

import (
	"fmt"
	"math/rand"
	"os"
	"path/filepath"
	"red-green/door"
	"regexp"
	"strconv"
	"strings"
	"time"
	"unicode"

	_ "github.com/mattn/go-sqlite3"
	"github.com/seehuhn/mt19937"
)

var SPACEACE string
var SPACEACE_VERSION string
var SPACEACE_COPYRIGHT string

func init() {
	SPACEACE = "Space Ace"
	SPACEACE_VERSION = "0.0.2"
	SPACEACE_COPYRIGHT = "(C) 2021 Bugz, Red-Green Software"
}

var Config map[string]string

func find_words(text string) [][]int {
	word, _ := regexp.Compile("([A-Za-z]+)")
	return word.FindAllStringIndex(text, -1)
}

func press_a_key(d *door.Door) int {
	green := door.ColorText("BOLD GREEN")
	blue := door.ColorText("BOLD BLUE")
	yellow := door.ColorText("BOLD YELLOW")
	any_caps := green
	any_lower := yellow

	any_color := func(text string) string {
		var output string
		var lastColor string

		for _, letter := range text {
			if unicode.IsUpper(letter) {
				if lastColor != any_caps {
					lastColor = any_caps
					output += any_caps
				}
				output += string(letter)
			} else {
				if lastColor != any_lower {
					lastColor = any_lower
					output += any_lower
				}
				output += string(letter)
			}
		}
		return output
	}

	text := "Press a key to continue..."
	work_text := []rune(text)

	d.Write(door.Reset + any_color(text))

	var r int = -1
	var t int
	sleep_ms := 250
	ms_sleep := 0

	words := find_words(text)
	var word int = 0
	var wpos int = 0
	current_word := text[words[word][0]:words[word][1]]
	t = 0

	r = d.WaitKey(0, int64(sleep_ms)*1000)

	for r == -1 {
		ms_sleep += sleep_ms

		if ms_sleep > 1000 {
			ms_sleep -= 1000
			t++
			if t >= int(door.Inactivity) {
				d.Write(strings.Repeat("\b", len(text)))
				d.Write(any_color(text) + door.CRNL)
				return -1
			}
		}
		wpos++

		if wpos == len(current_word) {
			word++
			wpos = 0
			work_text = []rune(text)

			if word == len(words) {
				word = 0
				if any_caps == green {
					any_caps = blue
				} else {
					any_caps = green
				}
				d.Write(strings.Repeat("\b", len(text)))
				d.Write(any_color(string(work_text)))
				current_word = text[words[word][0]:words[word][1]]
				goto READKEY
			}

			current_word = text[words[word][0]:words[word][1]]
		}

		{
			c := rune(current_word[wpos])

			for !unicode.IsLower(c) {
				wpos++
				if wpos == len(current_word) {
					wpos = 0
					word++
					work_text = []rune(text)
					if word == len(words) {
						word = 0
					}
					current_word = text[words[word][0]:words[word][1]]
				}
				c = rune(current_word[wpos])
			}

			// Ok, we found something that's lower case
			work_text[words[word][0]+wpos] = unicode.ToUpper(c)
		}
		d.Write(strings.Repeat("\b", len(text)))
		d.Write(any_color(string(work_text)))

	READKEY:
		r = d.WaitKey(0, int64(sleep_ms)*1000)
	}

	d.Write(strings.Repeat("\b", len(text)))
	d.Write(any_color(text))
	return r
}

func MainMenu() door.Menu {
	// Make the main menu
	m := door.Menu{Panel: door.Panel{Width: 25,
		X:           5,
		Y:           5,
		Style:       door.DOUBLE,
		Title:       "[ Main Menu: ]",
		TitleOffset: 3,
		BorderColor: door.ColorText("BRI CYAN ON BLA")}}
	m.SelectedR = door.MakeMenuRender(door.ColorText("BOLD CYAN"),
		door.ColorText("BOLD BLUE"),
		door.ColorText("BOLD CYAN"),
		door.ColorText("BOLD BLUE"))
	m.UnselectedR = door.MakeMenuRender(door.ColorText("BOLD YEL ON BLUE"),
		door.ColorText("BOLD WHI ON BLUE"),
		door.ColorText("BOLD YEL ON BLUE"),
		door.ColorText("BOLD CYAN ON BLUE"))

	m.AddSelection("P", "Play Cards")
	m.AddSelection("S", "View Scores")
	m.AddSelection("C", "Configure")
	m.AddSelection("H", "Help")
	m.AddSelection("A", "About this game")
	m.AddSelection("Q", "Quit")
	return m
}

func ConfigMenu() door.Menu {
	m := door.Menu{Panel: door.Panel{Width: 31,
		X:           5,
		Y:           5,
		Style:       door.DOUBLE,
		Title:       "[ Configuration Menu ]",
		TitleColor:  door.ColorText("BRI CYAN ON BLUE"),
		BorderColor: door.ColorText("CYAN ON BLUE")}}
	m.SelectedR = door.MakeMenuRender(door.ColorText("BOLD CYAN"),
		door.ColorText("BOLD BLUE"),
		door.ColorText("BOLD CYAN"),
		door.ColorText("BOLD BLUE"))
	m.UnselectedR = door.MakeMenuRender(door.ColorText("BOLD YEL ON BLUE"),
		door.ColorText("BOLD WHI ON BLUE"),
		door.ColorText("BOLD YEL ON BLUE"),
		door.ColorText("BOLD CYAN ON BLUE"))

	m.AddSelection("D", "Deck Colors")
	m.AddSelection("V", "View Settings")
	m.AddSelection("Q", "Quit")
	return m
}

func display_information(d *door.Door) {
	d.Write(door.Clrscr)

	keyColor := door.ColorText("BRI GREEN")
	sepColor := door.ColorText("BRI YEL")
	valColor := door.ColorText("CYAN")
	nice_format := func(key string, value string) string {
		return fmt.Sprintf("%s%-20s %s: %s%s", keyColor, key, sepColor, valColor, value) + door.CRNL
	}

	d.Write(nice_format("BBS Software", d.Config.BBSID))
	d.Write(nice_format("Real Name", d.Config.Real_name))
	d.Write(nice_format("Handle", d.Config.Handle))
	d.Write(nice_format("User #", strconv.Itoa(d.Config.User_number)))
	d.Write(nice_format("Security Level", strconv.Itoa(d.Config.Security_level)))
	d.Write(nice_format("Node #", strconv.Itoa(d.Config.Node)))
	d.Write(nice_format("Unicode", strconv.FormatBool(door.Unicode)))
	d.Write(nice_format("CP437", strconv.FormatBool(door.CP437)))
	d.Write(nice_format("Screen Size", fmt.Sprintf("%d X %d", door.Width, door.Height)))
}

func panel_demo(d *door.Door) {
	width := 55
	fmtStr := "%-55s"
	p := door.Panel{X: 5, Y: 5, Width: width, Style: door.DOUBLE, BorderColor: door.ColorText("CYAN ON BLUE"), Title: "[ Panel Demo ]"}

	lineColor := door.ColorText("BRIGHT WHI ON BLUE")
	// Add lines to the panel
	for _, line := range []string{"The BBS Door Panel Demo", "(C) 2021 Red Green Software, https://red-green.com"} {
		if door.Unicode {
			line = strings.Replace(line, "(C)", "\u00a9", -1)
		}
		l := door.Line{Text: fmt.Sprintf(fmtStr, line), DefaultColor: lineColor}
		p.Lines = append(p.Lines, l)
	}
	p.Lines = append(p.Lines, p.Spacer())
	p.Lines = append(p.Lines, door.Line{Text: fmt.Sprintf(fmtStr, "Welcome to golang!"), DefaultColor: lineColor})

	d.Write(door.Clrscr)
	d.Write(p.Output() + door.CRNL)
}

func MakeColorsRender(brackets string, text_color string, colors map[string]string) func(string) string {
	renderF := func(text string) string {
		words := find_words(text)
		var option bool = true
		var color_word bool = false
		var result string
		var last_color string
		var word_color string
		var words_id = 0
		word_pair := words[words_id]
		normal := colors["ALL"]

		for tpos, c := range text {
			if option {
				if c == '[' || c == ']' {
					if last_color != brackets {
						result += brackets
						last_color = brackets
					}
					if c == ']' {
						option = false
					}
				} else {
					if last_color != text_color {
						result += text_color
						last_color = text_color
					}
				}
				result += string(c)
			} else {
				// Out of the options
				if color_word {
					if tpos < word_pair[1] {
						if last_color != word_color {
							result += word_color
							last_color = word_color
						} else {
							color_word = false
							if last_color != normal {
								result += normal
								last_color = normal
							}
						}
						result += string(c)
					}
				} else {
					// look for COLOR word
					if tpos >= word_pair[1] {
						words_id++
						if words_id >= len(words) {
							word_pair = []int{999, 999}
						} else {
							word_pair = words[words_id]
						}
					}

					if word_pair[0] == tpos {
						// start of word
						possible := text[word_pair[0]:word_pair[1]]
						color_code, has := colors[strings.ToUpper(possible)]
						// log.Printf("Match %s / found %s %#v\n", possible, color_code, has)
						if has {
							word_color = color_code
						} else {
							word_color = colors["ALL"]
						}
						if last_color != word_color {
							result += word_color
							last_color = word_color
						}
					}

					result += string(c)
				}
			}
		}
		return result
	}
	return renderF
}

var DeckColors []string

func init() {
	DeckColors = []string{
		"All", "Brown", "Green", "Red", "Blue", "Cyan", "Magenta", "White"}
}

func DeckColorMenu(current string) door.Menu {
	m := door.Menu{Panel: door.Panel{Width: 31,
		X:           5,
		Y:           5,
		Style:       door.DOUBLE,
		Title:       "[ Deck Menu ]",
		TitleColor:  door.ColorText("BRI CYAN ON BLUE"),
		BorderColor: door.ColorText("CYAN ON BLUE")}}

	unselectMap := map[string]string{"BLUE": door.ColorText("BRI BLUE ON BLUE"),
		"BROWN":   door.ColorText("BROWN ON BLUE"),
		"RED":     door.ColorText("BRI RED ON BLUE"),
		"CYAN":    door.ColorText("CYAN ON BLUE"),
		"GREEN":   door.ColorText("BRI GREEN ON BLUE"),
		"MAGENTA": door.ColorText("BRI MAGENTA ON BLUE"),
		"WHITE":   door.ColorText("BRI WHITE ON BLUE"),
		"ALL":     door.ColorText("BRI WHITE ON BLUE")}
	selectMap := map[string]string{"BLUE": door.ColorText("BRI BLUE ON BLACK"),
		"BROWN":   door.ColorText("BROWN ON BLACK"),
		"RED":     door.ColorText("BRI RED ON BLACK"),
		"CYAN":    door.ColorText("CYAN ON BLACK"),
		"GREEN":   door.ColorText("BRI GREEN ON BLACK"),
		"MAGENTA": door.ColorText("BRI MAGENTA ON BLACK"),
		"WHITE":   door.ColorText("BRI WHITE ON BLACK"),
		"ALL":     door.ColorText("BRI WHITE ON BLACK")}

	m.SelectedR = MakeColorsRender(door.ColorText("BOLD CYAN"),
		door.ColorText("BOLD BLUE"),
		selectMap)
	m.UnselectedR = MakeColorsRender(door.ColorText("BOLD YEL ON BLUE"),
		door.ColorText("BOLD WHI ON BLUE"),
		unselectMap)

	m.Chosen = 0
	for idx, color := range DeckColors {
		m.AddSelection(color[:1], color)
		if color == current {
			m.Chosen = idx
		}
	}
	return m
}

/*
door::renderFunction statusValue(door::ANSIColor status,
                                 door::ANSIColor value) {
  door::renderFunction rf = [status,
                             value](const std::string &txt) -> door::Render {
    door::Render r(txt);
    size_t pos = txt.find(':');
    if (pos == std::string::npos) {
      for (char const &c : txt) {
        if (std::isdigit(c))
          r.append(value);
        else
          r.append(status);
      }
    } else {
      pos++;
      r.append(status, pos);
      r.append(value, txt.length() - pos);
    }
    return r;
  };
  return rf;
}

*/

func RenderStatusValue(status string, value string) func(string) string {
	renderF := func(text string) string {
		var result string
		pos := strings.Index(text, ":")
		if pos != -1 {
			result = status + text[:pos] + value + text[pos:]
		} else {
			// TO FIX:  See above.  We do digits in value color...
			result = status + text
		}
		return result
	}
	return renderF
}

// Display the SysOp settings in the Config/yaml file
func DisplaySettings(d *door.Door) {
	d.Write(door.Clrscr + door.Reset)
	W := 35
	panel := door.Panel{Width: W,
		X:           5,
		Y:           5,
		Style:       door.DOUBLE,
		BorderColor: door.ColorText("BOLD CYAN ON BLUE"),
	}
	l := door.Line{Text: fmt.Sprintf("%*s", W, "Game Settings - SysOp Configurable"),
		DefaultColor: door.ColorText("BOLD GREEN ON BLUE")}
	panel.Lines = append(panel.Lines, l)
	renderF := RenderStatusValue(door.ColorText("BOLD YELLOW ON BLUE"), door.ColorText("BOLD GREEN ON BLUE"))
	for key, value := range Config {
		if key[0] == '_' {
			continue
		}
		key = strings.Replace(key, "_", " ", -1)
		l = door.Line{Text: fmt.Sprintf("%20s : %*s", key, -(W - 23), value), RenderF: renderF}
		panel.Lines = append(panel.Lines, l)
	}
	d.Write(panel.Output() + door.Reset + door.CRNL)
	press_a_key(d)
}

func Configure(d *door.Door, db *DBData) {
	menu := ConfigMenu()
	// deckcolor := "DeckColor"
	// save_deckcolor := false
	var choice int

	for choice >= 0 {
		d.Write(door.Clrscr)
		choice = menu.Choose(d)

		if choice < 0 {
			break
		}
		option := menu.GetOption(choice)

		switch option {
		case 'D':
			// Deck color
			current_color := db.GetSetting("DeckColor", "All")
			colormenu := DeckColorMenu(current_color)
			d.Write(door.Clrscr)
			c := colormenu.Choose(d)
			if c > 0 {
				db.SetSetting("DeckColor", DeckColors[c-1])
			}
			press_a_key(d)
		case 'V':
			// View settings
			DisplaySettings(d)
		case 'Q':
			choice = -1
		}
	}
}

func Help() door.Panel {
	W := 60
	center_x := (door.Width - W) / 2
	center_y := (door.Height - 16) / 2
	help := door.Panel{X: center_x,
		Y:           center_y,
		Width:       W,
		Style:       door.DOUBLE,
		BorderColor: door.ColorText("BOLD YELLOW ON BLUE")}
	help.Lines = append(help.Lines, door.Line{Text: fmt.Sprintf("%*s", -W, "Help"),
		DefaultColor: door.ColorText("BOLD CYAN ON BLUE")})
	help.Lines = append(help.Lines, help.Spacer())
	copyright := SPACEACE + " v" + SPACEACE_VERSION
	help.Lines = append(help.Lines,
		door.Line{Text: fmt.Sprintf("%*s", -W, copyright),
			DefaultColor: door.ColorText("BOLD WHITE ON BLUE")})
	copyright = SPACEACE_COPYRIGHT
	if door.Unicode {
		copyright = strings.Replace(copyright, "(C)", "\u00a9", -1)
	}
	help.Lines = append(help.Lines,
		door.Line{Text: fmt.Sprintf("%*s", -W, copyright),
			DefaultColor: door.ColorText("BOLD WHITE ON BLUE")})
	for _, text := range []string{"",
		"Use Left/Right arrow keys, or 4/6 keys to move marker.",
		"The marker wraps around the sides of the screen.", "",
		"Select card to play with Space or 5.",
		"A card can play if it is higher or lower in rank by 1.",
		"",
		"Enter draws another card.",
		"",
		"Example: A Jack could play either a Ten or a Queen.",
		"Example: A King could play either an Ace or a Queen.",
		"",
		"The more cards in your streak, the more points earn.",
	} {
		help.Lines = append(help.Lines, door.Line{Text: fmt.Sprintf("%*s", -W, text)})
	}
	return help
}

func About() door.Panel {
	W := 60
	center_x := (door.Width - W) / 2
	center_y := (door.Height - 16) / 2
	about := door.Panel{X: center_x,
		Y:           center_y,
		Width:       W,
		Style:       door.SINGLE_DOUBLE,
		BorderColor: door.ColorText("BOLD YELLOW ON BLUE"),
	}
	about.Lines = append(about.Lines, door.Line{Text: fmt.Sprintf("%*s", -W, "About This Door"),
		DefaultColor: door.ColorText("BOLD CYAN ON BLUE")})
	about.Lines = append(about.Lines, about.Spacer())
	copyright := SPACEACE + " v" + SPACEACE_VERSION
	about.Lines = append(about.Lines, door.Line{Text: fmt.Sprintf("%*s", -W, copyright)})
	copyright = SPACEACE_COPYRIGHT
	if door.Unicode {
		copyright = strings.Replace(copyright, "(C)", "\u00a9", -1)
	}
	about.Lines = append(about.Lines,
		door.Line{Text: fmt.Sprintf("%*s", -W, copyright),
			DefaultColor: door.ColorText("BOLD WHITE ON BLUE")})
	for _, text := range []string{"",
		"This door was written by Bugz.",
		"",
		"It is written in Go, understands CP437 and unicode, adapts",
		"to screen sizes, uses door32.sys, supports TheDraw Fonts,",
		"and runs on Linux and Windows."} {
		about.Lines = append(about.Lines, door.Line{Text: fmt.Sprintf("%*s", -W, text)})
	}
	return about
}

func main() {
	var message string

	// Get path to binary, and chdir to it.
	binaryPath, _ := os.Executable()
	binaryPath = filepath.Dir(binaryPath)
	_ = os.Chdir(binaryPath)

	fmt.Println("Starting space-ace")

	rng := rand.New(mt19937.New())
	rng.Seed(time.Now().UnixNano())

	d := door.Door{}
	d.Init("space-ace")

	db := DBData{}
	db.Open("space-database.db")
	defer db.Close()
	// Use Real_name or Handle?  Or read config?
	db.User = d.Config.Real_name

	const config_filename = "space-ace.yaml"

	if FileExists(config_filename) {
		Config = LoadConfig(config_filename)
	} else {
		Config = make(map[string]string)
	}

	var update_config bool = false

	// Guessing at this point as to what settings I actually want.
	config_defaults := map[string]string{"hands_per_day": "3",
		"date_format":     "January 2",
		"date_score":      "01/02/2006",
		"makeup_per_day":  "5",
		"play_days_ahead": "2",
		"date_monthly":    "January 2006"}

	// _seed
	_, ok := Config["_seed"]
	if !ok {
		// Initialize the seed
		Config["_seed"] = fmt.Sprintf("%d,%d,%d", rng.Int31(), rng.Int31(), rng.Int31())
		update_config = true
	}

	for key, value := range config_defaults {
		if SetConfigDefault(&Config, key, value) {
			update_config = true
		}
	}

	if update_config {
		SaveConfig(config_filename, Config)
	}

	starfield := StarField{}
	starfield.Regenerate(rng)

	starfield.Display(&d)
	d.Write(door.Goto(1, 1) + door.Reset)

	// Get the last call value (if they have called before)
	last_call, _ := strconv.ParseInt(db.GetSetting("LastCall", "0"), 10, 64)
	now := time.Now()
	db.SetSetting("LastCall", fmt.Sprintf("%d", now.Unix()))

	// Check for maint run -- get FirstOfMonthDate, and see if
	// records are older then it is.  (If so, yes -- run maint)!

	if last_call != 0 {
		d.Write("Welcome Back!" + door.CRNL)
		delta := now.Sub(time.Unix(last_call, 0))
		hours := delta.Hours()
		if hours > 24 {
			d.Write(fmt.Sprintf("It's been %0.1f days since you last played."+door.CRNL, hours/24))
		} else {
			if hours > 1 {
				d.Write(fmt.Sprintf("It's been %0.1f hours since you last played."+door.CRNL, hours))
			} else {
				minutes := delta.Minutes()
				d.Write(fmt.Sprintf("It's been %0.1f minutes since you last played."+door.CRNL, minutes))
			}
		}
	}

	left := d.TimeLeft()

	message = fmt.Sprintf("You have %0.2f minutes / %0.2f seconds remaining..."+door.CRNL, left.Minutes(), left.Seconds())
	d.Write(message)

	press_a_key(&d)

	mainmenu := MainMenu()
	var choice int

	for choice >= 0 {
		d.Write(door.Clrscr)
		starfield.Display(&d)
		choice = mainmenu.Choose(&d)

		if choice < 0 {
			break
		}
		option := mainmenu.GetOption(choice)

		// fmt.Printf("Choice: %d, Option: %c\n", choice, option)

		switch option {
		case 'P':
			// Play cards
			pc := PlayCards{Door: &d,
				DB:     &db,
				Config: &Config,
				RNG:    rng,
			}
			pc.Init()
			pc.Play()

		case 'S':
			// View Scores
		case 'C':
			// Configure
			Configure(&d, &db)
		case 'H':
			// Help
			h := Help()
			d.Write(door.Clrscr + h.Output() + door.Reset + door.CRNL)
			press_a_key(&d)
		case 'A':
			// About
			a := About()
			d.Write(door.Clrscr + a.Output() + door.Reset + door.CRNL)
			press_a_key(&d)
		case 'Q':
			choice = -1
		}

	}

	d.Write(door.Reset + door.CRNL)

	message = fmt.Sprintf("Returning to %s ..."+door.CRNL, d.Config.BBSID)
	d.Write(message)

	// d.WaitKey(1, 0)
	left = d.TimeLeft()

	message = fmt.Sprintf("You had %0.2f minutes / %0.2f seconds remaining!"+door.CRNL, left.Minutes(), left.Seconds())
	d.Write(message)

	left = d.TimeUsed()
	d.Write(fmt.Sprintf("You used %0.2f seconds / %0.2f minutes."+door.CRNL, left.Seconds(), left.Minutes()))

	fmt.Println("Exiting space-ace")
}