package main

import (
	"os"
	"path/filepath"
	"strings"
	"testing"
)

var names = []string{"novox", "ace", "shanks", "g14"}

func TestANodeNameIsRefusedWhereItIsWritten(t *testing.T) {
	cases := map[string]struct{ file, src string }{
		"manifest string": {"modules/kernel/module.json", "{\n \"description\": \"as on Shanks\"\n}\n"},
		"file line":       {"modules/kernel/files/boot.sh", "#!/bin/sh\necho run on g14\n"},
		"go identifier":   {"modules/kernel/cmd/x/a.go", "package main\n\nfunc novox() {}\n"},
		"test name":       {"modules/kernel/cmd/x/a_test.go", "package main\n\nfunc TestAce(t *testing.T) {}\n\nfunc TestOnAce_x(t *testing.T) {}\n"},
	}
	for name, c := range cases {
		if got := scan(c.file, c.src, names); len(got) == 0 {
			t.Errorf("%s: %q not refused", name, c.src)
		}
	}
}

func TestTheFindingNamesTheLineAndTheWord(t *testing.T) {
	got := scan("f.sh", "a\nb\nrun on ACE now\n", names)
	if len(got) != 1 || !strings.HasPrefix(got[0], "f.sh:3:") || !strings.Contains(got[0], "ace") {
		t.Errorf("got %v", got)
	}
}

func TestTheForgeIsNotANodeName(t *testing.T) {
	for _, s := range []string{
		"see novox/hq issue 5",
		"module git.novox.be/novox/mesh-sdk/go v1.2.3",
		"https://git.novox.be/novox/mesh-catalog",
		"git.novox.be",
		"space trace surface grace g14x",
	} {
		if got := scan("f", s, names); len(got) != 0 {
			t.Errorf("%q refused: %v", s, got)
		}
	}
}

func TestANodeNameInAPathOrJoinedIsRefused(t *testing.T) {
	for _, s := range []string{
		"modules/kernel/testdata/novox/meminfo",
		"/srv/novox/data",
		"testdata/shanks-meminfo.txt",
		"on-shanks",
		"shanks-desktop",
		"mesh-novox",
		"func novoxTree() {}",
		"aceFiles := 1",
		"g14Meminfo := 2",
		"novox_tree := 3",
	} {
		if got := scan("f", s, names); len(got) == 0 {
			t.Errorf("%q not refused", s)
		}
	}
}

func TestANodeNamedPathIsRefusedThroughRun(t *testing.T) {
	root := t.TempDir()
	p := filepath.Join(root, "modules/kernel/testdata/ace/x")
	os.MkdirAll(filepath.Dir(p), 0o755)
	os.WriteFile(p, []byte("clean\n"), 0o644)
	got, err := run(root, names, []string{"kernel"})
	if err != nil || len(got) != 1 || !strings.HasPrefix(got[0], "modules/kernel/testdata/ace/x:0: ") {
		t.Errorf("got %v, %v", got, err)
	}
}

func TestCheckReturnsOneOnAFindingAndTwoOnAnUnreadableList(t *testing.T) {
	root := t.TempDir()
	write := func(p, s string) {
		p = filepath.Join(root, p)
		os.MkdirAll(filepath.Dir(p), 0o755)
		os.WriteFile(p, []byte(s), 0o644)
	}
	write("particulars", "ace\n")
	write("checks/particulars/covered", "kernel\n")
	write("modules/kernel/a", "clean\n")
	if got := check(root); got != 0 {
		t.Errorf("clean = %d, want 0", got)
	}
	write("modules/kernel/a", "on ace\n")
	if got := check(root); got != 1 {
		t.Errorf("finding = %d, want 1", got)
	}
	os.Remove(filepath.Join(root, "particulars"))
	if got := check(root); got != 2 {
		t.Errorf("no list = %d, want 2", got)
	}
}

func TestOnlyCoveredModulesAreRead(t *testing.T) {
	root := t.TempDir()
	write := func(p, s string) {
		p = filepath.Join(root, p)
		os.MkdirAll(filepath.Dir(p), 0o755)
		os.WriteFile(p, []byte(s), 0o644)
	}
	write("modules/kernel/files/a", "on novox\n")
	write("modules/other/files/a", "on novox\n")
	got, err := run(root, names, []string{"kernel"})
	if err != nil {
		t.Fatal(err)
	}
	if len(got) != 1 || !strings.Contains(got[0], "modules/kernel/files/a:1") {
		t.Errorf("got %v", got)
	}
}