package vision

import "errors"

// Sentinel errors returned by the vision package. Each is wrapped with %w on
// the way out so callers can test for a category while keeping the cause.
var (
	// ErrNoImage is returned when an image source string is empty.
	ErrNoImage = errors.New("vision: empty image source")
	// ErrNotConfigured is returned by adapters when no endpoint/model is set.
	ErrNotConfigured = errors.New("vision: adapter not configured")
	// ErrUnsupportedSource is returned when an image source cannot be handled.
	ErrUnsupportedSource = errors.New("vision: unsupported image source")
	// ErrFetch is returned when a URL image cannot be downloaded.
	ErrFetch = errors.New("vision: cannot fetch image")
	// ErrUpstream is returned when the vision/OCR provider request fails.
	ErrUpstream = errors.New("vision: upstream request failed")
	// ErrBadImage is returned when an image cannot be read or decoded.
	ErrBadImage = errors.New("vision: cannot read image")
	// ErrBadArgs is returned by a tool when its arguments are malformed.
	ErrBadArgs = errors.New("vision: bad tool arguments")
)