package main

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

// The catalogue's placement files as the merge check reads them (ADR 0549 §1, ADR 0555): the real tree holds every
// rule, and a tree that breaks them is refused with every finding named at once.
func TestPlacementFiles(t *testing.T) {
	found, err := Check("../..")
	if err != nil {
		t.Fatal(err)
	}
	for _, f := range found {
		t.Errorf("%s (novox/hq ADR 0549 §1)", f)
	}

	root := t.TempDir()
	write := func(name, body string) {
		t.Helper()
		if err := os.MkdirAll(filepath.Join(root, "placement"), 0o755); err != nil {
			t.Fatal(err)
		}
		if err := os.WriteFile(filepath.Join(root, "placement", name), []byte(body), 0o644); err != nil {
			t.Fatal(err)
		}
	}
	if found, err := Check(root); err != nil || len(found) != 0 {
		t.Fatalf("a catalogue with no placement directory: %v, %v", found, err)
	}
	write("ace.json", `{"v":1,"node":"ace","decided":{"hub":true,"address":"10.77.0.1"},"modules":[{"module":"a","ports":{"80":8080}},{"module":"b","ports":{"81":8080}}]}`)
	write("g14.json", `{"v":1,"node":"g14","decided":{"hub":true,"address":"10.77.0.1"},"modules":[{"module":"c","bindings":{"pg":{"node":"ace","module":"pg"}}}]}`)
	write("novox.json", `{"v":1,"node":"shanks","modules":[]}`)
	write("bad.json", `{"v":1,"node":"bad","modules":{}}`)
	write("dated.json", `{"v":1,"node":"dated","revision":"abc","modules":[]}`)
	write("notes.md", "x")
	found, err = Check(root)
	if err != nil {
		t.Fatal(err)
	}
	for _, want := range []string{"a and b are both published on host port 8080", "bound to ace/pg", "both have the address 10.77.0.1",
		"ace, g14 are each placed as it", "placement file of novox names the node", "bad.json does not read", "dated.json names a revision",
		"notes.md is not a placement file"} {
		hit := false
		for _, f := range found {
			hit = hit || strings.Contains(f, want)
		}
		if !hit {
			t.Errorf("no finding says %q; found %v", want, found)
		}
	}
}