package version

import (
	"fmt"
	"runtime"
	"strconv"
	gotime "time"
)

// This will be set via ldflags at build time.
var (
	variant string = "<unset>"
	version string = "<unset>"
	hash    string = "<unset>"
	time    string = "<unset>"
	branch  string = "<unset>"
)

var (
	Info Build = Build{
		variant:   variant,
		version:   version,
		hash:      hash,
		time:      time,
		branch:    branch,
		goVersion: runtime.Version(),
	}
)

// Build contains information about the build environment.
type Build struct {
	// The variant of the current build.
	variant string

	// The version of the current build.
	version string

	// The git hash of the current build.
	hash string

	// The time of the current build.
	time string

	// The branch of the current build.
	branch string

	// The version of go.
	goVersion string
}

func (b Build) Variant() string {
	return b.variant
}

func (b Build) Version() string {
	return b.version
}

func (b Build) Hash() string {
	return b.hash
}

func (b Build) Time() string {
	return b.time
}

func (b Build) Branch() string {
	return b.branch
}

func (b Build) GoVersion() string {
	return b.goVersion
}

func (b Build) PrettyPrint(cfg Config) {
	if !cfg.Banner.Enabled {
		return
	}

	year := gotime.Now().Year()
	ascii := []string{
		"                       -**********=                        ",
		"                  .::-=+**********+=--:.                   ",
		"              .-=*******++=-----==+******=-.               ",
		"           :-+*******=:.            :-+******=:            ",
		"        .-********+:                   .=*******=.         ",
		"      :+********+:                       .=*******+:       ",
		"    .+*********+   :+***+.                 -********+:     ",
		"   -**********+.  .****=                    =*********=    " + "  ____  _             _   _               ____  _       _   _                ",
		" .************:   +****                      +**********:  " + " / ___|| |_ __ _ _ __| |_(_)_ __   __ _  / ___|(_) __ _| \\ | | ___ ____      ",
		".************+   .----:                      -***********- " + " \\___ \\| __/ _` | '__| __| | '_ \\ / _` | \\___ \\| |/ _` |  \\| |/ _ \\_  /      ",
		"*************=                               :************." + "  ___) | || (_| | |  | |_| | | | | (_| |  ___) | | (_| | |\\  | (_) / / _ _ _ ",
		":************+    ----:                      -***********= " + " |____/ \\__\\__,_|_|   \\__|_|_| |_|\\__, | |____/|_|\\__, |_| \\_|\\___/___(_|_|_)",
		" :************.   *****                      +**********:  " + "                                  |___/           |___/                      ",
		"  .=**********+   :****=                    -*********+.   " + " Version: " + b.version + " (" + b.variant + ")" + " [Copyright " + strconv.Itoa(year) + " SigNoz, All rights reserved]",
		"    :+*********+   :+***+                  -********+:     ",
		"      :+********+.                        =*******+-       ",
		"        :=********=.                    -*******=:         ",
		"           :=*******+-.             .-+******=-.           ",
		"              :-+*******+=--:::--=+******+=:               ",
		"                  .:-==+***********+=-::                   ",
		"                       :**********=                        ",
	}

	fmt.Println()
	for _, line := range ascii {
		fmt.Print(line)
		fmt.Println()
	}
	fmt.Println()
}