package cps

// EQ2Type represents supported data types in EQ2 protocol
type EQ2Type int

const (
	TypeInt8 EQ2Type = iota
	TypeInt16
	TypeInt32
	TypeInt64
	TypeFloat32
	TypeString8
	TypeString16
	TypeString32
	TypeColor
)

var typeMap = map[string]EQ2Type{
	"int8":     TypeInt8,
	"int16":    TypeInt16,
	"int32":    TypeInt32,
	"int64":    TypeInt64,
	"float":    TypeFloat32,
	"string8":  TypeString8,
	"string16": TypeString16,
	"string32": TypeString32,
	"color":    TypeColor,
}

// FieldDef represents a field definition with position and type info
type FieldDef struct {
	Name     string
	Type     EQ2Type
	Size     int // Array size, 0 for scalar, -1 for dynamic
	Position int // Explicit position, -1 for append
	After    string
	Before   string
	Remove   bool // true if field should be removed in this version
}

// VersionDef holds field definitions for a specific version
type VersionDef struct {
	Version    int
	Fields     map[string]*FieldDef
	FieldOrder []string // Preserve parsing order
}

// PacketDef represents a complete packet with all versions
type PacketDef struct {
	Name     string
	Versions map[int]*VersionDef
}

// CompiledField represents a field in the final compiled structure
type CompiledField struct {
	Name    string
	Type    EQ2Type
	Size    int
	Offset  int // Byte offset for fixed-size packets
	Dynamic bool
}

// CompiledStruct represents a compiled packet structure for a specific version
type CompiledStruct struct {
	Name    string
	Version int
	Fields  []*CompiledField
	Size    int // Total size if fixed, -1 if dynamic
}