package conditions

import (
	"testing"
	"time"
)

// **A healer's attempt is said and kept, and never clears the condition** (to-be 45 §7): the resolver
// becomes the healer, `tried` says what it did, and only an observation clears it.
func TestAHealersAttemptIsKeptAndClearsNothing(t *testing.T) {
	k, _, told, c := keeper(t)
	ctx := t.Context()
	if _, err := k.Observe(ctx, silent("ace")); err != nil {
		t.Fatal(err)
	}
	held, open, err := k.Tried(ctx, "machine.ace.silent", Attempt{What: "asked ace to report", Outcome: "acted",
		By: "healer H1"}, ResolverHealer("H1"))
	if err != nil || !open {
		t.Fatalf("tried: %v %v", open, err)
	}
	if held.Resolver != "healer:H1" || len(held.Tried) != 1 || held.Tried[0].By != "healer H1" || held.Tried[0].At.IsZero() {
		t.Fatalf("after one attempt: %+v", held)
	}
	said := settled(t, told, 2)
	if said[1].Event != EventChanged || said[1].Change != ChangeResolver || said[1].Was != ResolverSelf {
		t.Errorf("the healer taking it is not said as a change of resolver: %+v", said[1])
	}
	// A second attempt by the same healer is kept and says nothing new.
	if _, _, err := k.Tried(ctx, "machine.ace.silent", Attempt{What: "sent again", Outcome: "acted", By: "healer H1"},
		ResolverHealer("H1")); err != nil {
		t.Fatal(err)
	}
	if got, _, _ := k.Get(ctx, "machine.ace.silent"); len(got.Tried) != 2 {
		t.Errorf("tried %+v", got.Tried)
	}
	time.Sleep(50 * time.Millisecond)
	if n := len(told.Said()); n != 2 {
		t.Errorf("a second attempt said %d events in all, want 2", n)
	}
	// Nothing open: nothing recorded, and no error.
	if _, open, err := k.Tried(ctx, "machine.nobody.silent", Attempt{What: "x"}, ResolverHealer("H1")); open || err != nil {
		t.Errorf("an attempt on nothing open: %v %v", open, err)
	}
	c.pass(time.Minute)
}

// **A spent budget is the operator's, urgent, and the watchdog seeing it again does not undo that.**
func TestAnEscalationHoldsAgainstTheNextObservation(t *testing.T) {
	k, _, told, _ := keeper(t)
	ctx := t.Context()
	if _, err := k.Observe(ctx, silent("ace")); err != nil {
		t.Fatal(err)
	}
	if _, _, err := k.Tried(ctx, "machine.ace.silent", Attempt{What: "asked", Outcome: "acted", By: "healer H1"},
		ResolverHealer("H1")); err != nil {
		t.Fatal(err)
	}
	held, _, err := k.Escalate(ctx, "machine.ace.silent", Attempt{What: "budget spent", Outcome: "escalated", By: "healer H1"})
	if err != nil {
		t.Fatal(err)
	}
	if held.Severity != Urgent || held.Resolver != ResolverOperator || !held.Escalated() {
		t.Fatalf("escalated: %+v", held)
	}
	said := settled(t, told, 4)
	if said[2].Change != ChangeSeverity || said[3].Change != ChangeResolver || said[3].Was != "healer:H1" {
		t.Errorf("the escalation is not said as severity then resolver: %+v %+v", said[2], said[3])
	}
	again, err := k.Observe(ctx, silent("ace")) // a warning, as the watchdog says it
	if err != nil {
		t.Fatal(err)
	}
	if again.Severity != Urgent || again.Resolver != ResolverOperator {
		t.Errorf("the next observation undid the escalation: %+v", again)
	}
	// A healer trying later does not take it back from the operator.
	after, _, _ := k.Tried(ctx, "machine.ace.silent", Attempt{What: "x", By: "healer H1"}, ResolverHealer("H1"))
	if after.Resolver != ResolverOperator {
		t.Errorf("a later attempt took the condition back from the operator: %s", after.Resolver)
	}
}

// **What was tried is carried into a reopening**: the same fault again within ten minutes is the
// same condition, and what the healers tried on it is still what they tried.
func TestAReopeningCarriesWhatWasTried(t *testing.T) {
	k, _, _, c := keeper(t)
	ctx := t.Context()
	if _, err := k.Observe(ctx, silent("ace")); err != nil {
		t.Fatal(err)
	}
	if _, _, err := k.Tried(ctx, "machine.ace.silent", Attempt{What: "asked", By: "healer H1"}, ResolverHealer("H1")); err != nil {
		t.Fatal(err)
	}
	if _, err := k.Clear(ctx, "machine.ace.silent", "heard again"); err != nil {
		t.Fatal(err)
	}
	c.pass(5 * time.Minute)
	again, err := k.Observe(ctx, silent("ace"))
	if err != nil {
		t.Fatal(err)
	}
	if again.Count != 2 || len(again.Tried) != 1 || again.Tried[0].What != "asked" {
		t.Errorf("reopened without what was tried: %+v", again)
	}
}