package generatedtext

import (
	"fmt"
	"strings"
)

type Today struct {
	Summary             string   `json:"summary"`
	ForecastDiscussion  []string `json:"forecast_discussion"`
	PrecipitationTiming string   `json:"precipitation_timing,omitempty"`
	Confidence          string   `json:"confidence,omitempty"`
}

func ValidateToday(data []byte) (Today, []byte, error) {
	value, err := decodeGeneratedText[Today](data, "today")
	if err != nil {
		return Today{}, nil, err
	}

	value.Summary = strings.TrimSpace(value.Summary)
	value.PrecipitationTiming = strings.TrimSpace(value.PrecipitationTiming)
	value.Confidence = strings.TrimSpace(value.Confidence)
	value.ForecastDiscussion = trimNonEmpty(value.ForecastDiscussion)
	if value.Summary == "" {
		return Today{}, nil, fmt.Errorf("today generated text summary is required")
	}
	if len(value.ForecastDiscussion) == 0 {
		return Today{}, nil, fmt.Errorf("today generated text forecast discussion is required")
	}

	normalized, err := normalizeGeneratedText(value, "today")
	if err != nil {
		return Today{}, nil, err
	}
	return value, normalized, nil
}