package servicecontext

import (
	"context"
	"errors"

	"git.yuntuo.hk/k2safe/go-omni/storage/local"

	"example.com/userService/internal/settings"
	"git.yuntuo.hk/k2safe/go-omni/storage"
)

// InitStorage is called once, before serving requests. The composition root
// owns provider clients; business services receive only capability interfaces.
func (c *Context) InitStorage(ctx context.Context, cfg settings.StorageConfig) error {
	if c == nil || ctx == nil {
		return errors.New("storage initialization requires context")
	}
	c.closeMu.Lock()
	defer c.closeMu.Unlock()
	if c.closed {
		return errors.New("service dependencies are closed")
	}
	if err := ctx.Err(); err != nil {
		return err
	}
	if c.Files != nil {
		return errors.New("storage already initialized")
	}
	if err := cfg.Validate(); err != nil {
		return err
	}

	files, err := local.New(cfg.Root, cfg.MaxBytes)
	if err != nil {
		return err
	}
	signer, err := storage.NewUploadSigner(files, cfg.PublicURL, []byte(cfg.SigningKey), cfg.Policy())
	if err != nil {
		return err
	}
	uploader, err := storage.NewUploader(files, cfg.Policy())
	if err != nil {
		return err
	}
	c.Files, c.Uploads, c.Downloads, c.UploadLinks, c.FileHTTP = files, uploader, signer, signer, signer

	return nil
}