package model

import "time"

// ForecastDiscussionProduct distinguishes the discussion bulletin family.
//
// Today weatherfeeder only normalizes Area Forecast Discussion (AFD) products,
// but this remains a distinct type so additional discussion-like products can be
// added without changing the payload field type.
type ForecastDiscussionProduct string

const (
	ForecastDiscussionProductAFD ForecastDiscussionProduct = "afd"
)

// WeatherForecastDiscussion is a canonical issued discussion bulletin for an NWS office.
//
// Unlike WeatherForecastRun, this is authored narrative text rather than a sequence
// of forecast periods.
type WeatherForecastDiscussion struct {
	OfficeID   string `json:"officeId,omitempty"`
	OfficeName string `json:"officeName,omitempty"`

	Product ForecastDiscussionProduct `json:"product"`

	IssuedAt  time.Time  `json:"issuedAt"`
	UpdatedAt *time.Time `json:"updatedAt,omitempty"`

	KeyMessages []string `json:"keyMessages,omitempty"`

	ShortTerm *WeatherForecastDiscussionSection `json:"shortTerm,omitempty"`
	LongTerm  *WeatherForecastDiscussionSection `json:"longTerm,omitempty"`
}

// WeatherForecastDiscussionSection is a fixed prose section within a discussion bulletin.
type WeatherForecastDiscussionSection struct {
	Qualifier string     `json:"qualifier,omitempty"`
	IssuedAt  *time.Time `json:"issuedAt,omitempty"`
	Text      string     `json:"text,omitempty"`
}