package state

import (
	"context"
	"sync"

	"go.opentelemetry.io/otel/metric"
	"go.opentelemetry.io/otel/trace"

	"gitea.libretechconsulting.com/rmcguire/go-app/pkg/otel"

	"gitea.libretechconsulting.com/rmcguire/ambient-local-exporter/pkg/weather"
)

type WeatherState struct {
	updates []*weather.WeatherUpdate
	keep    int
	ctx     context.Context
	tracer  trace.Tracer
	meter   metric.Meter
	*sync.RWMutex
}

type Opts struct {
	Ctx      context.Context
	KeepLast int
}

func NewWeatherState(opts *Opts) *WeatherState {
	if opts.KeepLast < 1 {
		opts.KeepLast = 1
	}

	return &WeatherState{
		updates: make([]*weather.WeatherUpdate, 0),
		keep:    opts.KeepLast,
		ctx:     opts.Ctx,
		tracer:  otel.GetTracer(opts.Ctx, "weatherState"),
		meter:   otel.GetMeter(opts.Ctx, "weatherState"),
	}
}