package main

import (
	"strings"
	"testing"

	"github.com/novox/mesh-controller/internal/catalogue"
)

// `plan` tells a person what a module would open and why, from the same `why` every listens
// entry already carries for the firewall (novox/hq ADR 0007) — so deciding whether to assign a
// module does not need reading its manifest first.
func TestListensLinesShowWhatAModuleWouldOpenAndWhy(t *testing.T) {
	m := catalogue.Manifest{Module: "minio", Listens: []catalogue.Listening{
		{Port: 9000, From: catalogue.FromMesh, Why: "the S3 endpoint"},
		{Port: 9001, From: catalogue.FromMesh},
	}}
	got := listensLines(m)
	if len(got) != 2 {
		t.Fatalf("two listens entries, got %d: %v", len(got), got)
	}
	if !strings.Contains(got[0], "9000/tcp") || !strings.Contains(got[0], "the S3 endpoint") {
		t.Errorf("the port and its why did not both appear: %q", got[0])
	}
	if strings.Contains(got[1], "—") {
		t.Errorf("a listens entry with no why should not print a dash: %q", got[1])
	}
	if !strings.Contains(got[1], "9001/tcp") {
		t.Errorf("the port still appears without a why: %q", got[1])
	}
}

func TestListensLinesAreEmptyForAModuleWithNothingToListenOn(t *testing.T) {
	if got := listensLines(catalogue.Manifest{Module: "board"}); len(got) != 0 {
		t.Errorf("a module with no listens should print nothing, got %v", got)
	}
}

// `plan --show` says when a file is written into rather than over (novox/hq issue 128), or the
// mesh's region of a hosts file reads as the whole file.
func TestAFileWrittenIntoIsShownAsSuch(t *testing.T) {
	region := shownAs(map[string]any{
		"id": "mesh-wireguard.fact-node-names", "path": "/etc/hosts", "into": "block"})
	if region != "mesh-wireguard.fact-node-names  /etc/hosts (written into, block)" {
		t.Errorf("the region is shown as %q", region)
	}
	whole := shownAs(map[string]any{"id": "dnsmasq.fact-node-zones", "path": "/etc/mesh-resolver/nodes.conf"})
	if strings.Contains(whole, "written into") {
		t.Errorf("a whole file is shown as written into: %q", whole)
	}
}