package api

import (
	"context"
	"errors"

	"connectrpc.com/connect"
	"github.com/tigorlazuardi/bluemage/go/gen/jet/model"
	"github.com/tigorlazuardi/bluemage/go/pkg/errs"
	"github.com/tigorlazuardi/bluemage/go/pkg/telemetry"
	"go.opentelemetry.io/otel/attribute"
	"go.opentelemetry.io/otel/metric"
	"go.opentelemetry.io/otel/trace"

	"github.com/go-jet/jet/v2/qrm"

	. "github.com/go-jet/jet/v2/sqlite"
	. "github.com/tigorlazuardi/bluemage/go/gen/jet/table"
)

var getSubredditMetric, _ = meter.Int64Counter("api.subreddits.get",
	metric.WithDescription("The number of times a subreddit is retrieved"),
)

func (api *API) GetSubreddit(ctx context.Context, name string) (sub model.Subreddits, err error) {
	ctx, span := tracer.Start(ctx, "GetSubreddit", trace.WithAttributes(attribute.String("name", name)))
	defer func() { telemetry.EndWithStatus(span, err) }()

	getSubredditMetric.Add(ctx, 1, metric.WithAttributes(attribute.String("name", name)))

	stmt := SELECT(Subreddits.AllColumns).
		FROM(Subreddits).
		WHERE(Subreddits.Name.EQ(String(name)))

	err = stmt.QueryContext(ctx, api.DB, &sub)
	if err != nil {
		if errors.Is(err, qrm.ErrNoRows) {
			return sub, errs.
				Wrapf(err, "subreddit '%s' does not exist", name).
				Details(
					"name", name,
					"query", stmt.DebugSql(),
				).
				Code(connect.CodeNotFound)
		}
		return sub, errs.Wrapf(err, "failed to get subreddit '%s'", name).
			Details(
				"name", name,
				"query", stmt.DebugSql(),
			)
	}
	return sub, nil
}