package skipper

import "fmt"

// SkipBasedOnLabels determines if a test should be skipped based on label maps
// which should be executed and labels that should be skipped.
// This function is defined independently of the framework package
// so that it may be used by Ginkgo & Golang tests.
func SkipBasedOnLabels(test, labels, skip map[string]string) (bool, string) {
	// handle test block with no labels, dont run it if -labels is provided
	if len(test) == 0 && len(labels) != 0 {
		return true, "test without labels skipped due to -labels flag being provided"
	}

	// evalute skip labels first bc we should exit sooner on average
	if skip != nil && len(test) != 0 {
		for k := range test {
			if v, ok := skip[k]; ok && v == test[k] {
				return true, fmt.Sprintf("test with label %s=%s skipped due to -skip-labels flag", k, labels[k])
			}
		}
	}

	if len(labels) != 0 {
		matches := map[string]bool{}
		// match all labels
		for k := range labels {
			matches[k] = false
			if v, ok := test[k]; ok && v == labels[k] {
				matches[k] = true
			}
		}
		skip := false
		for _, match := range matches {
			if !match {
				skip = true
			}
		}
		if skip {
			return true, fmt.Sprintf("test without labels skipped due to -labels flag: %v", labels)
		}
	}

	return false, ""
}