package orbit

import (
	"context"
	"errors"
	"net/url"
	"strconv"
)

// CreateSubscription 保留原幂等键和请求内容重报；SDK不会自动生成新键或重新指定起点。
func (c *Client) CreateSubscription(ctx context.Context, key string, in CreateSubscriptionRequest) (SubscriptionResult, error) {
	var out SubscriptionResult
	if !validID(in.QueueID) {
		return out, errors.New("invalid queue id")
	}
	err := c.call(ctx, "POST", "/v1/subscriptions", key, in, &out)
	return out, err
}
func (c *Client) GetSubscription(ctx context.Context, id string) (Subscription, error) {
	var out Subscription
	if !validID(id) {
		return out, errors.New("invalid subscription id")
	}
	err := c.call(ctx, "GET", "/v1/subscriptions/"+id, "", nil, &out)
	return out, err
}
func (c *Client) ConfigureSubscription(ctx context.Context, id, key string, in ConfigureSubscriptionRequest) (SubscriptionResult, error) {
	var out SubscriptionResult
	if !validID(id) {
		return out, errors.New("invalid subscription id")
	}
	err := c.call(ctx, "POST", "/v1/subscriptions/"+id+":configure", key, in, &out)
	return out, err
}
func (c *Client) ListSubscriptions(ctx context.Context, queue string, in SubscriptionPageRequest) (SubscriptionPage, error) {
	var out SubscriptionPage
	if !validID(queue) {
		return out, errors.New("invalid queue id")
	}
	q, err := subscriptionQuery(in.Limit, in.Cursor)
	if err != nil {
		return out, err
	}
	q.Set("queue_id", queue)
	err = c.call(ctx, "GET", "/v1/subscriptions?"+q.Encode(), "", nil, &out)
	return out, err
}
func (c *Client) ListEventDeliveries(ctx context.Context, id string, in DeliveryPageRequest) (DeliveryPage, error) {
	var out DeliveryPage
	if !validID(id) {
		return out, errors.New("invalid subscription id")
	}
	q, err := subscriptionQuery(in.Limit, in.Cursor)
	if err != nil {
		return out, err
	}
	switch in.State {
	case "", DeliveryPending, DeliveryLeased, DeliveryAcked, DeliveryExpired:
	default:
		return out, errors.New("invalid delivery state")
	}
	if in.State != "" {
		q.Set("state", string(in.State))
	}
	err = c.call(ctx, "GET", "/v1/subscriptions/"+id+"/deliveries?"+q.Encode(), "", nil, &out)
	return out, err
}
func (c *Client) GetEventDelivery(ctx context.Context, sub, id string) (DeliveryDetail, error) {
	var out DeliveryDetail
	if !validID(sub) || !validID(id) {
		return out, errors.New("invalid subscription or delivery id")
	}
	err := c.call(ctx, "GET", "/v1/subscriptions/"+sub+"/deliveries/"+id, "", nil, &out)
	return out, err
}
func (c *Client) RetryEventDelivery(ctx context.Context, sub, id, key string, in RetryDeliveryRequest) (RetryDeliveryResult, error) {
	var out RetryDeliveryResult
	if !validID(sub) || !validID(id) {
		return out, errors.New("invalid subscription or delivery id")
	}
	err := c.call(ctx, "POST", "/v1/subscriptions/"+sub+"/deliveries/"+id+":retry", key, in, &out)
	return out, err
}
func subscriptionQuery(limit int, cursor string) (url.Values, error) {
	q := url.Values{}
	if limit < 0 || limit > 100 || len(cursor) > 2048 {
		return nil, errors.New("invalid subscription page")
	}
	if limit != 0 {
		q.Set("limit", strconv.Itoa(limit))
	}
	if cursor != "" {
		q.Set("cursor", cursor)
	}
	return q, nil
}