package bootstrap

import (
	"context"
	"encoding/json"
	"os"
	"path/filepath"
	"strings"
	"testing"
	"time"
)

// What genesis raises, it raises as the module that succeeds it declares — name, data directory
// and image — so the module adopts it by the found rule that already exists (novox/hq ADR 0163,
// rule 7; issue 090). The network is the one difference left: the bootstrap forge runs on the
// machine's network to reach the store on its loopback, and a take says so.
func TestGenesisRaisesTheForgeAsTheModuleDeclaresIt(t *testing.T) {
	var ran [][]string
	run := func(_ context.Context, name string, args ...string) (string, error) {
		if name == "docker" && args[0] == "container" {
			return "", nil // not raised yet
		}
		ran = append(ran, append([]string{name}, args...))
		return "", nil
	}
	if err := raiseGiteaServer(context.Background(), run, time.Second, "pw", DefaultPorts(), quietly); err != nil {
		t.Fatal(err)
	}
	var raised []string
	for _, r := range ran {
		if r[0] == "docker" && r[1] == "run" {
			raised = r
		}
	}
	line := strings.Join(raised, " ")
	for _, want := range []string{"--name gitea ", "--volume " + giteaDataDir + ":/data", " " + giteaImage} {
		if !strings.Contains(line+" ", want) {
			t.Errorf("the forge is not raised with %q: %s", want, line)
		}
	}
	if giteaBootstrap != ForgeModule {
		t.Errorf("the bootstrap forge is %q and the module names its container %q", giteaBootstrap, ForgeModule)
	}

	// Against the module's own manifest, where the catalogue is checked out beside this repository.
	var manifest []byte
	for _, candidate := range []string{"../../../mesh-catalog/modules/gitea/module.json", "../../../../../mesh-catalog/modules/gitea/module.json"} {
		if raw, err := os.ReadFile(filepath.Clean(candidate)); err == nil {
			manifest = raw
			break
		}
	}
	if manifest == nil {
		t.Skip("the catalogue is not beside this checkout; the module's pin is not compared")
	}
	var m struct {
		Resources []struct {
			ID, Type, Name, Image string
			Volumes               []string
		} `json:"resources"`
	}
	if err := json.Unmarshal(manifest, &m); err != nil {
		t.Fatal(err)
	}
	for _, r := range m.Resources {
		if r.Type != "container" || r.ID != "server" {
			continue
		}
		if r.Name != giteaBootstrap {
			t.Errorf("the module names its container %q; genesis raises %q", r.Name, giteaBootstrap)
		}
		if r.Image != giteaImage {
			t.Errorf("the module pins %s; genesis raises %s — the two must move together", r.Image, giteaImage)
		}
		if len(r.Volumes) != 1 || !strings.HasSuffix(r.Volumes[0], ":/data") {
			t.Errorf("the module mounts %v; genesis mounts %s:/data", r.Volumes, giteaDataDir)
		}
	}
}