package k2v

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

type BatchInsertItem struct {
	PartitionKey   string  `json:"pk"`
	SortKey        string  `json:"sk"`
	CausalityToken *string `json:"ct"`
	Value          Item    `json:"v"`
}

func (c *Client) InsertBatch(ctx context.Context, b Bucket, items []BatchInsertItem) error {
	u, err := url.Parse(c.endpoint)
	if err != nil {
		return err
	}
	u.Path = string(b)

	reqBody, err := json.Marshal(items)
	if err != nil {
		return err
	}

	req, err := http.NewRequestWithContext(ctx, http.MethodPost, u.String(), bytes.NewReader(reqBody))
	if err != nil {
		return err
	}
	req.Header.Set("Content-Type", "application/json")

	resp, err := c.executeRequest(req)
	if err != nil {
		return err
	}
	defer resp.Body.Close()

	body, err := io.ReadAll(resp.Body)
	if err != nil {
		return err
	}

	if resp.StatusCode != http.StatusNoContent {
		return fmt.Errorf("http status code %d: %s", resp.StatusCode, string(body))
	}

	return nil
}