// Package generatedtext validates structured LLM text and render contexts.
package generatedtext

import (
	"fmt"
	"strings"
)

type Hourly struct {
	Summary             string `json:"summary"`
	ForecastDiscussion  string `json:"forecast_discussion"`
	PrecipitationTiming string `json:"precipitation_timing"`
}

func ValidateHourly(data []byte) (Hourly, []byte, error) {
	value, err := decodeGeneratedText[Hourly](data, "hourly")
	if err != nil {
		return Hourly{}, nil, err
	}

	value.Summary = strings.TrimSpace(value.Summary)
	value.ForecastDiscussion = strings.TrimSpace(value.ForecastDiscussion)
	value.PrecipitationTiming = strings.TrimSpace(value.PrecipitationTiming)
	if value.Summary == "" {
		return Hourly{}, nil, fmt.Errorf("hourly generated text summary is required")
	}
	if value.ForecastDiscussion == "" {
		return Hourly{}, nil, fmt.Errorf("hourly generated text forecast discussion is required")
	}
	if err := requireGeneratedTextStringField(data, "hourly", "precipitation_timing"); err != nil {
		return Hourly{}, nil, err
	}

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