package bazel

import (
	"fmt"
	"strings"
)

// Bin returns the bazel-bin directory
func Bin() (string, error) {
	bin, err := Info("bazel-bin")
	if err != nil {
		return "", infoErr("Bin", "bazel-bin", err)
	}
	return bin, nil
}

// Genfiles returns the bazel-genfiles directory
func Genfiles() (string, error) {
	genfiles, err := Info("bazel-genfiles")
	if err != nil {
		return "", infoErr("Genfiles", "bazel-genfiles", err)
	}
	return genfiles, nil
}

// Testlogs returns the bazel-testlogs directory
func Testlogs() (string, error) {
	testlogs, err := Info("bazel-testlogs")
	if err != nil {
		return "", infoErr("TestLogs", "bazel-testlogs", err)
	}
	return testlogs, nil
}

// Info returns the passed-in `bazel info` key
func Info(key string) (string, error) {
	out, err := Command("info", key).Output()
	if err != nil {
		return "", err
	}
	if len(out) == 0 {
		return "", fmt.Errorf("bazel.Info: unable to find %s, no output received", key)
	}
	return strings.Trim(string(out), "\n"), nil
}

func infoErr(scope, msg string, e error) error {
	return fmt.Errorf("bazel.%s: failed to get Bazel info key %s. error: %w", scope, msg, e)
}