package sinks

import (
	"context"
	"fmt"

	"gitea.maximumdirect.net/ejr/feedkit/config"
	"gitea.maximumdirect.net/ejr/feedkit/event"
)

type PostgresSink struct {
	name string
	dsn  string
}

func NewPostgresSinkFromConfig(cfg config.SinkConfig) (Sink, error) {
	dsn, err := requireStringParam(cfg, "dsn")
	if err != nil {
		return nil, err
	}
	return &PostgresSink{name: cfg.Name, dsn: dsn}, nil
}

func (p *PostgresSink) Name() string { return p.name }

func (p *PostgresSink) Consume(ctx context.Context, e event.Event) error {
	_ = ctx

	// Boundary validation: if something upstream violated invariants,
	// surface it loudly rather than printing partial nonsense.
	if err := e.Validate(); err != nil {
		return fmt.Errorf("rabbitmq sink: invalid event: %w", err)
	}

	// TODO implement Postgres transaction
	return nil
}