package extensions

import (
	"context"
	"encoding/json"
	"fmt"
	"io"
	"net/http"
	"net/url"
)

type SetExtensionConfigurationSegmentRequest struct {
	// The ID of the extension to update.
	ExtensionID string `json:"extension_id"`

	// The configuration segment to update.
	Segment ConfigurationSegment `json:"segment"`

	// The ID of the broadcaster that installed the extension.
	// Include this field only if the segment is set to developer or broadcaster.
	BroadcasterID *string `json:"broadcaster_id,omitempty"`

	// The contents of the segment.
	// This string may be a plain-text string or a string-encoded JSON object.
	Content *string `json:"content,omitempty"`

	// The version number that identifies this definition of the segment’s data.
	// If not specified, the latest definition is updated.
	Version *string `json:"version,omitempty"`
}

// Updates a configuration segment. The segment is limited to 5 KB. Extensions that are active on a channel do not receive the updated configuration.
//
// Rate Limits: You may update the configuration a maximum of 20 times per minute.
//
// Requires a signed JSON Web Token (JWT) created by an EBS. For signing requirements,
// see Signing the JWT: https://dev.twitch.tv/docs/extensions/building/#signing-the-jwt
// The signed JWT must include the role, user_id, and exp fields
// (see JWT Schema: https://dev.twitch.tv/docs/extensions/reference/#jwt-schema).
// The role field must be set to external.
func (c *Extensions) SetExtensionConfigurationSegment(ctx context.Context, body *SetExtensionConfigurationSegmentRequest) error {
	endpoint := c.baseUrl.ResolveReference(&url.URL{Path: "extensions/configurations"})

	r, w := io.Pipe()

	go func() {
		if err := json.NewEncoder(w).Encode(body); err != nil {
			w.CloseWithError(err)
		} else {
			w.Close()
		}
	}()

	req, err := http.NewRequestWithContext(ctx, http.MethodPut, endpoint.String(), r)
	if err != nil {
		return err
	}

	res, err := c.client.Do(req)
	if err != nil {
		return err
	}
	defer res.Body.Close()

	statusOK := res.StatusCode >= 200 && res.StatusCode < 300
	if !statusOK {
		return fmt.Errorf("failed to set extension configuration segment: %s", res.Status)
	}

	return nil
}