//go:build linux

package apply

import (
	"context"
	"fmt"
	"path/filepath"
	"strings"
	"testing"

	"github.com/novox/mesh-host/internal/declaration"
	"github.com/novox/mesh-host/internal/store"
)

// A container that reads a filled file and mounts a library whose disk is not there is held by the write verb as a
// full apply holds it (novox/hq ADR 0328 §9, issue 668): never created or recreated over the missing disk.
func TestAWriteDoesNotRecreateAContainerHeldForItsLibrary(t *testing.T) {
	// No folder is given the group: the library's root is absent, and nothing is made.
	gid := 61000
	libraries(t, nil, nil)
	base := t.TempDir()
	root := filepath.Join(base, "gone", "media")
	env := filepath.Join(base, "radarr.env")
	raw := fmt.Sprintf(`{"declaration":1,"provisioner_account":"mesh-node-provisioner","filled_files":[%q],
	  "groups":[{"name":"mesh-media","gid":%d}],"libraries":[%s],"resources":[
	  {"id":"radarr.env","type":"file","path":%q,"content":"","mode":"0600","owner-at-runtime":"owned"},
	  {"id":"radarr.app","type":"container","name":"radarr","image":%q,"env-file":[%q],"volumes":[%q]}]}`,
		env, gid, libJSON("media", root, gid, true, false, "movies"), env, pinned, env,
		filepath.Join(root, "movies")+":/movies")
	d, err := declaration.Parse([]byte(raw))
	if err != nil {
		t.Fatal(err)
	}
	var ran []string
	run := func(_ context.Context, name string, args ...string) (string, error) {
		ran = append(ran, name+" "+strings.Join(args, " "))
		return "", nil
	}
	var state store.State
	for _, content := range []string{"PORT=1\n", "PORT=2\n"} {
		var report Report
		report, state, err = WriteFilled(context.Background(), archHost(t), d, state, env, []byte(content), run,
			nil, nil, nil)
		if err != nil {
			t.Fatal(err)
		}
		if o := outcomeOf(report, "radarr.app"); o.Action != "waiting" {
			t.Errorf("after writing %q the container is %+v, not held for its library", content, o)
		}
	}
	for _, line := range ran {
		if strings.HasPrefix(line, "docker run") || strings.HasPrefix(line, "docker rm") {
			t.Errorf("the container was created or removed over a missing disk: %v", ran)
		}
	}
}