package main

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

func TestFindingsRefuseWhatThePlacementPathLeft(t *testing.T) {
	for _, row := range []struct {
		name  string
		files map[string]string
		want  string // empty: clean
	}{
		{"clean", map[string]string{"modules/a/module.json": `{"module":"a","reads":["mesh-delivery-assigner.placement"]}`}, ""},
		{"a placement directory", map[string]string{"placement/ace.json": `{}`}, "placement: the repository holds no placement"},
		{"a particulars file", map[string]string{"particulars": "ace\n"}, "particulars: the repository lists no node names"},
		{"a read of the indexer's placement", map[string]string{"modules/a/module.json": `{"module":"a","reads":["mesh-delivery-indexer.placement"]}`}, `a: names "mesh-delivery-indexer.placement"`},
		{"a read of its candidates", map[string]string{"modules/b/module.json": `{"module":"b","reads":["mesh-delivery-indexer.placement-candidates"]}`}, "placement-candidates"},
		{"its event", map[string]string{"modules/c/module.json": `{"module":"c","on":[{"event":"mesh-delivery-indexer.placement-changed"}]}`}, "placement-changed"},
		{"the seat's own state is allowed", map[string]string{"modules/d/module.json": `{"module":"d","reads":["mesh-placement.placement"]}`}, ""},
	} {
		t.Run(row.name, func(t *testing.T) {
			root := t.TempDir()
			for path, text := range row.files {
				p := filepath.Join(root, path)
				if err := os.MkdirAll(filepath.Dir(p), 0o755); err != nil {
					t.Fatal(err)
				}
				if err := os.WriteFile(p, []byte(text), 0o644); err != nil {
					t.Fatal(err)
				}
			}
			got, err := Findings(root)
			if err != nil {
				t.Fatal(err)
			}
			if all := strings.Join(got, "\n"); (row.want == "") != (all == "") || !strings.Contains(all, row.want) {
				t.Fatalf("findings = %q, want one containing %q", all, row.want)
			}
		})
	}
}

// The script's run of this check over the real tree (novox/hq ADR 0529 clause 2).
func TestTheCatalogueHoldsNoPlacementOfTheRepositoryPath(t *testing.T) {
	got, err := Findings(filepath.Join("..", ".."))
	if err != nil {
		t.Fatal(err)
	}
	for _, f := range got {
		t.Error(f)
	}
}