package moves

import (
	"testing"

	"github.com/carlosframework/platform/internal/provision"
)

// Final review M1: a stuck entry names the participant that stopped. The
// target stops for an operator at its return (returning) and at its release
// (releasing, StuckReleaseTargetFiles); every other stuck is the source's.
func TestStuckNamesTheParticipantThatStopped(t *testing.T) {
	rec := func(state, target, source, reason string, dirty bool) provision.Record {
		return provision.Record{Host: "a.example.com", Move: &provision.MoveState{ID: "mv_abcdefghijklmnopqrstuvwxyz", Incarnation: "i", From: "ie", To: "uk",
			State: state, StuckReason: reason,
			Rollback: &provision.MoveRollback{ID: "rb_abcdefghijklmnopqrstuvwxyz", TargetPhase: target, SourcePhase: source, Dirty: dirty}}}
	}
	for _, c := range []struct {
		name           string
		target, source string
		reason         string
		dirty          bool
		want           string
	}{
		{"the target's release", provision.RbTargetReleasing, provision.RbSourceWaiting, provision.StuckReleaseTargetFiles, false, "target"},
		{"the target's return", provision.RbTargetReturning, provision.RbSourceWaiting, provision.StuckReturnTargetFiles, true, "target"},
		{"the source's verification", provision.RbTargetCleaned, provision.RbSourceVerified, provision.StuckBaselineMismatch, false, "source"},
	} {
		before := rec(provision.MoveRollingBack, c.target, c.source, "", c.dirty)
		after := rec(provision.MoveStuck, c.target, c.source, c.reason, c.dirty)
		e, ok := TransitionOf(before, after)
		if !ok || e.Event != "stuck" || e.Fields["role"] != c.want || e.Fields["reason"] != c.reason {
			t.Fatalf("%s: %+v %v, want stuck with role %s", c.name, e, ok, c.want)
		}
	}
}

// Final re-review 1, N1: DeclaredLost names a target loss only for a move on
// the rollback path a target loss is declared on: a landing (which the
// declaration rolls back) or a rollback. It fabricates none for any other
// state, a committed move's above all.
func TestDeclaredLostOnlyOnTheRollbackPath(t *testing.T) {
	for state, want := range map[string]bool{
		provision.MoveLanding: true, provision.MoveRollingBack: true,
		provision.MoveCommitted: false, provision.MovePreparing: false, provision.MoveCutting: false, provision.MoveReverting: false, provision.MoveStuck: false,
	} {
		e, ok := DeclaredLost(&provision.MoveState{ID: "mv_abcdefghijklmnopqrstuvwxyz", Incarnation: "i", From: "ie", To: "uk", State: state})
		if ok != want || ok && (e.Event != "declared_lost" || e.Identity != DeclaredLostIdentity) {
			t.Errorf("%s: %+v %v, want %v", state, e, ok, want)
		}
	}
}