package main

import (
	"context"
	"testing"

	"gitea.dcglab.co.uk/steve/restic-manager/internal/api"
)

type recordingSender struct {
	envelopes []api.Envelope
}

func (s *recordingSender) Send(env api.Envelope) error {
	s.envelopes = append(s.envelopes, env)
	return nil
}

func TestCancelCommandReportsUnknownJob(t *testing.T) {
	d := &dispatcher{}
	tx := &recordingSender{}
	env, err := api.Marshal(api.MsgCommandCancel, "request-1", api.CommandCancelPayload{JobID: "missing-job"})
	if err != nil {
		t.Fatalf("marshal command: %v", err)
	}

	if err := d.handle(context.Background(), env, tx); err != nil {
		t.Fatalf("handle cancel: %v", err)
	}
	if len(tx.envelopes) != 1 {
		t.Fatalf("sent %d envelopes, want 1", len(tx.envelopes))
	}
	if tx.envelopes[0].Type != api.MsgCommandResult || tx.envelopes[0].ID != env.ID {
		t.Fatalf("unexpected result envelope: %+v", tx.envelopes[0])
	}
	var result api.CommandResultPayload
	if err := tx.envelopes[0].UnmarshalPayload(&result); err != nil {
		t.Fatalf("unmarshal result: %v", err)
	}
	if result.JobID != "missing-job" || result.Accepted || result.Error != "job_not_found" {
		t.Fatalf("unexpected result: %+v", result)
	}
}

func TestCancelCommandCancelsTrackedJob(t *testing.T) {
	d := &dispatcher{}
	cancelled := false
	d.trackJob("running-job", func() { cancelled = true })
	tx := &recordingSender{}
	env, err := api.Marshal(api.MsgCommandCancel, "request-2", api.CommandCancelPayload{JobID: "running-job"})
	if err != nil {
		t.Fatalf("marshal command: %v", err)
	}

	if err := d.handle(context.Background(), env, tx); err != nil {
		t.Fatalf("handle cancel: %v", err)
	}
	if !cancelled {
		t.Fatal("tracked job was not cancelled")
	}
	var result api.CommandResultPayload
	if err := tx.envelopes[0].UnmarshalPayload(&result); err != nil {
		t.Fatalf("unmarshal result: %v", err)
	}
	if !result.Accepted || result.Error != "" {
		t.Fatalf("unexpected result: %+v", result)
	}
}