package orgsettings

import (
	"os"
	"strings"
	"testing"
)

// Small helpers for the structural tests. They read this package's own source, which is the right tool for a
// defect that lives in a SQL string rather than in behaviour a unit test can reach without a database.

func readSource(t *testing.T, name string) string {
	t.Helper()
	b, err := os.ReadFile(name)
	if err != nil {
		t.Fatalf("read %s: %v", name, err)
	}
	return string(b)
}

func contains(s, sub string) bool { return strings.Contains(s, sub) }

func containsAll(s string, subs ...string) bool {
	for _, sub := range subs {
		if !strings.Contains(s, sub) {
			return false
		}
	}
	return true
}

// functionBody returns the text from a function's signature to the next line that begins a new top level
// declaration. Crude, and sufficient: it only has to bound one function well enough to look inside it.
func functionBody(src, signature string) string {
	i := strings.Index(src, signature)
	if i < 0 {
		return ""
	}
	rest := src[i+len(signature):]
	// The next top level func starts at a line beginning with "func ", which cannot occur inside a body at
	// column zero in gofmt output.
	if j := strings.Index(rest, "\nfunc "); j >= 0 {
		return rest[:j]
	}
	return rest
}