package lulu

import (
	"bytes"
	"encoding"
	"fmt"
)

//go:generate go run github.com/yawnak/string-enumer -t TrimSize -t ColorType -t Quality -t Binding -t Paper -t Finish -t Linen -t Foil --text -o ./pkgid_gen.go .

// PkgId is a pod_package_id which represents the manufacturing options
// of a printable.
type PkgId struct {
	TrimSize
	ColorType
	Quality
	Binding
	Paper
	Finish
	Linen
	Foil
}

func (p PkgId) MarshalText() ([]byte, error) {
	return []byte(fmt.Sprintf("%s.%s.%s.%s.%s.%s%s%s", p.TrimSize, p.ColorType, p.Quality, p.Binding, p.Paper, p.Finish, p.Linen, p.Foil)), nil
}

func (p *PkgId) UnmarshalText(text []byte) error {
	s := string(text)
	parts := bytes.Split(text, []byte("."))
	if len(parts) != 6 {
		return fmt.Errorf("malformed pod_package_id %q: has %d dot-separated fields; want 6", s, len(parts))
	}
	cover := parts[5]
	if len(cover) != 3 {
		return fmt.Errorf("malformed pod_package_id %q: finish/linen/foil suffix must be 3 characters", s)
	}

	for i, field := range []encoding.TextUnmarshaler{&p.TrimSize, &p.ColorType, &p.Quality, &p.Binding, &p.Paper} {
		if err := field.UnmarshalText(parts[i]); err != nil {
			return err
		}
	}
	for i, field := range []encoding.TextUnmarshaler{&p.Finish, &p.Linen, &p.Foil} {
		if err := field.UnmarshalText([]byte{cover[i]}); err != nil {
			return err
		}
	}
	return nil
}

// TrimSize is the final dimensions of the pages after the bleed margins
// are trimmed off.
type TrimSize string

const (
	Pocketbook        TrimSize = "0425X0687"
	Novella           TrimSize = "0500X0800"
	Digest            TrimSize = "0550X0850"
	A5                TrimSize = "0583X0827"
	UsTrade           TrimSize = "0600X0900"
	Royal             TrimSize = "0614X0921"
	Comic             TrimSize = "0663X1025"
	SmallSquare       TrimSize = "0750X0750"
	Executive         TrimSize = "0700X1000"
	CrownQuatro       TrimSize = "0744X0968"
	Square            TrimSize = "0850X0850"
	A4                TrimSize = "0827X1169"
	UsLetter          TrimSize = "0850X1100"
	Landscape         TrimSize = "0900X0700"
	UsLetterLandscape TrimSize = "1100X0850"
	A4Landscape       TrimSize = "1169X0827"
)

// ColorType is the color mode of the printer.
type ColorType string

const (
	Mono  ColorType = "BW"
	Color ColorType = "FC"
)

// Quality is the print quality.
type Quality string

const (
	Premium  Quality = "PRE"
	Standard Quality = "STD"
)

type Binding string

const (
	Perfect      Binding = "PB"
	Coil         Binding = "CO"
	SaddleStitch Binding = "SS"
	CaseWrap     Binding = "CW"
	LinenWrap    Binding = "LW"
	WireO        Binding = "WO"
)

// Paper is the weight/thickness and hue of the paper.
type Paper string

const (
	P60UncoatedWhite Paper = "060UW444"
	P60UncoatedCream Paper = "060UC444"
	P70CoatedWhite   Paper = "070CW460"
	P80CoatedWhite   Paper = "080CW444"
	P100CoatedWhite  Paper = "100CW"
)

// Finish is the surface finish of the cover.
type Finish string

const (
	Gloss       Finish = "G"
	Matte       Finish = "M"
	Unlaminated Finish = "U"
)

// Linen is the color of the linen-wrapped cover, if applicable.
type Linen string

const (
	RedLinen           Linen = "R"
	NavyLinen          Linen = "N"
	BlackLinen         Linen = "B"
	GrayLinen          Linen = "G"
	TanLinen           Linen = "T"
	ForestLinen        Linen = "F"
	InteriorCoverPrint Linen = "I"
	NoLinen            Linen = "X"
)

// Foil is the color of the foil stamping, if applicable.
type Foil string

const (
	GoldFoil  Foil = "G"
	BlackFoil Foil = "B"
	WhiteFoil Foil = "W"
	NoFoil    Foil = "X"
)