package builder

import (
	"context"
	"git.dragse.it/anthrove/e621-sdk-go/pkg/e621/endpoints"
	"git.dragse.it/anthrove/e621-sdk-go/pkg/e621/model"
	"strconv"
)

// PoolBuilder represents a builder for constructing queries to retrieve a specific pool.
type PoolBuilder interface {
	// ID sets the pool ID for the query.
	ID(poolID int) PoolBuilder
	// Execute sends the constructed query and returns the requested pool and an error, if any.
	Execute() (model.Pool, error)
}

// NewGetPoolBuilder creates a new instance of PoolBuilder with the provided RequestContext.
//
// Parameters:
//   - requestContext: The context for the API request, including the host, user agent, username, and API key.
//
// Returns:
//   - PoolBuilder: An instance of the PoolBuilder interface.
func NewGetPoolBuilder(requestContext model.RequestContext) PoolBuilder {
	return &getPool{requestContext: requestContext}
}

// getPool is an implementation of the PoolBuilder interface.
type getPool struct {
	requestContext model.RequestContext
	id             int
}

// ID sets the pool ID for the query.
//
// Parameters:
//   - poolID: The ID of the pool to be retrieved.
//
// Returns:
//   - PoolBuilder: The instance of the PoolBuilder for method chaining.
func (g *getPool) ID(poolID int) PoolBuilder {
	g.id = poolID
	return g
}

// Execute sends the constructed query and returns the requested pool and an error, if any.
//
// Returns:
//   - model.Pool: The requested pool.
//   - error: An error, if any, encountered during the API request or response handling.
func (g *getPool) Execute() (model.Pool, error) {
	if g.requestContext.RateLimiter != nil {
		err := g.requestContext.RateLimiter.Wait(context.Background())
		if err != nil {
			return model.Pool{}, err
		}
	}
	pool, err := endpoints.GetPool(g.requestContext, strconv.Itoa(g.id))
	if err != nil {
		return model.Pool{}, err
	}
	return pool, nil
}