89 lines
1.6 KiB
Go
89 lines
1.6 KiB
Go
package client
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import (
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"context"
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"errors"
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"math/rand"
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"time"
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"git.kapelle.org/niklas/s3share/internal/db"
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"git.kapelle.org/niklas/s3share/internal/s3"
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"git.kapelle.org/niklas/s3share/internal/types"
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)
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var letters = []rune("abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ0123456789")
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type Client struct {
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db db.DB
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s3 s3.S3
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}
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func NewClient(db db.DB, s3 s3.S3) *Client {
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rand.Seed(time.Now().UnixNano())
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return &Client{
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db: db,
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s3: s3,
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}
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}
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func createRandomString() string {
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s := make([]rune, 6)
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for i := range s {
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s[i] = letters[rand.Intn(len(letters))]
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}
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return string(s)
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}
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func (c *Client) CreateValidSlug(ctx context.Context) (string, error) {
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for i := 0; i < 10; i++ {
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slug := createRandomString()
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res, err := c.db.GetShare(ctx, slug)
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if err != nil {
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return "", err
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}
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if res == nil {
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return slug, nil
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}
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}
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return "", errors.New("could not create valid slug after 10 tries")
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}
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func (c *Client) GetShare(ctx context.Context, slug string) (*types.Share, error) {
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return c.db.GetShare(ctx, slug)
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}
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func (c *Client) CreateShare(ctx context.Context, key string) (*types.Share, error) {
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slug, err := c.CreateValidSlug(ctx)
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if err != nil {
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return nil, err
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}
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share := &types.Share{
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Slug: slug,
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Key: key,
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}
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exists, err := c.s3.KeyExists(ctx, key)
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if err != nil {
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return nil, err
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}
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if !exists {
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return nil, errors.New("key does not exist")
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}
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err = c.db.CreateShare(ctx, share)
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if err != nil {
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return nil, err
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}
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return share, nil
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}
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func (c *Client) GetObjectFromShare(ctx context.Context, share *types.Share) (s3.ObjectReader, error) {
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return c.s3.GetObject(ctx, share.Key)
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}
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