package cdr

import (
	"time"
)

type (
	// LineKind defines several types of records
	LineKind int
	// ReasonKind is metadata about a certain Line
	ReasonKind int
)

const (
	// UnknownLine aka "never seen this LineKind before"
	UnknownLine LineKind = iota
	// VoiceLine aka "this line belongs to (a part of) a voice call"
	VoiceLine
	// TextLine aka "this line belongs to a text message"
	TextLine
	// DataLine aka "this line belongs to a data session"
	DataLine
)

const (
	// UnknownReason aka "never seen this reason before"
	UnknownReason ReasonKind = iota
	// ORIG aka "originated"
	ORIG
	// CFIM aka "call forward immediately"
	CFIM
	// CFNA aka "call forward not available"
	CFNA
	// CFBS aka "call forward busy"
	CFBS
	// CFOR aka "call forward out of reach"
	CFOR
	// ROAM aka "roaming"
	ROAM
	// PBXOR aka "PBX out of reach"
	PBXOR
)

// Line contains common metadata for a record
type Line struct {
	Id          string
	Time        time.Time
	CLI         string
	From        string
	To          string
	Account     string
	Source      string
	Destination string
	Reason      ReasonKind
	Leg         int
	Kind        LineKind
}

// PricedLine connects a cost (buy) and price (sell) to a particular Line
type PricedLine struct {
	Line

	Cost  int
	Price int
}

// Call is a record of one or more PricedLines that ultimately form "a call".
type Call struct {
	From     string
	To       string
	Duration int
	Cost     int
	Price    int
	Legs     []PricedLine
}

// Text is a specific PricedLine for a text message.
type Text struct {
	PricedLine
}

// Data is a specific PricedLine that annotates the number of bytes consumed in that session.
type Data struct {
	PricedLine

	Bytes int
}