package conditions

import (
	"encoding/json"
	"strings"
	"testing"
)

// **The plain rule** (novox/hq ADR 0253): what the operator reads names no identifier, no code and no time
// of its own; the words conditions are made of pass.
func TestThePlainRuleRefusesIdentifiersCodeAndTimes(t *testing.T) {
	refused := map[string]string{
		"the walk of novox/mesh-catalog a6385479 waits": "a hash",
		"plan plan-1791454185265004861 is waiting":      "a hash",
		"see `mesh-delivery.show` for why":              "markup",
		"call mesh-delivery.show for why":               "a dotted name",
		"key plan.x.waiting":                            "a dotted name",
		"waited 56m0s":                                  "a duration in code",
		"since 10:40":                                   "a clock time",
		"since 2026-10-08":                              "a clock time",
		"raised at noon UTC":                            "a clock time",
		"start it with plans go --why":                  "a command's flag",
		"one line\nand another":                         "a line break",
		"the resolver at 10.77.0.1 is silent":           "",
		"":                                              "nothing",
		"**bold**":                                      "markup",
		"storage-media.mount failed":                    "a dotted name",
		"the store at /var/lib/mesh is full":            "",
		"a commit 0123abc landed":                       "a hash",
	}
	for text, want := range refused {
		why, ok := Plain(text, "g14")
		if ok {
			t.Errorf("%q passed", text)
			continue
		}
		if want != "" && !strings.HasPrefix(why, want) {
			t.Errorf("%q: refused for %q, want %q", text, why, want)
		}
	}
	for _, text := range []string{
		"openrazer delivery waiting to start",
		"The change to openrazer is merged and built, and has waited 56 minutes for mesh-delivery to let it start.",
		"3 failed services on shanks",
		"On shanks, mnt-recalbox (a mount), storage-media (a mount) and greenclip failed.",
		"Name lookups fail on g14",
		"Retired data of postgres on anchor waits for app_db",
		"Push keeps being fixed by hand",
	} {
		if why, ok := Plain(text, "g14", "shanks", "anchor"); !ok {
			t.Errorf("%q refused: %s", text, why)
		}
	}
}

// **A condition carries its plain words**: a producer's own; else its kind's; else its scope's — and the
// event says them beside the summary, for every channel.
func TestAConditionCarriesItsPlainWords(t *testing.T) {
	k, _, told, _ := keeper(t)
	before := Unworded
	var unworded []string
	Unworded = func(o Observation, why string) { unworded = append(unworded, why) }
	t.Cleanup(func() { Unworded = before })

	Wording("test-silent", func(o Observation) Words {
		return Words{Headline: o.Machine + " is not answering", Explanation: "The mesh has not heard from it.",
			Resolved: o.Machine + " answers again"}
	})
	c, err := k.Observe(t.Context(), Observation{Scope: ScopeMachine, ID: "ace", Kind: "test-silent", Machine: "ace",
		Severity: Warning, Source: "S1", Summary: "ace has not been heard from since 12:00 UTC (bound 3m0s)"})
	if err != nil {
		t.Fatal(err)
	}
	if c.Headline != "ace is not answering" || c.Resolved != "ace answers again" || c.Explanation == "" {
		t.Fatalf("the kind's words were not kept: %+v", c)
	}
	if c.Summary != "ace has not been heard from since 12:00 UTC (bound 3m0s)" {
		t.Errorf("the summary was changed: %q", c.Summary)
	}
	said := settled(t, told, 1)
	body, _ := json.Marshal(said[0])
	for _, field := range []string{`"headline":"ace is not answering"`, `"explanation":"The mesh has not heard from it."`,
		`"resolved":"ace answers again"`} {
		if !strings.Contains(string(body), field) {
			t.Errorf("the event does not carry %s: %s", field, body)
		}
	}

	// A producer's own words win; a resolved line it leaves out is made from its headline.
	c, _ = k.Observe(t.Context(), Observation{Scope: ScopeModule, ID: "openrazer.g14", Kind: "test-silent",
		Machine: "g14", Severity: Warning, Source: "health", Summary: "openrazer on g14 is not healthy",
		Headline: "openrazer not working on g14", Explanation: "Its service stopped with an error."})
	if c.Headline != "openrazer not working on g14" || c.Resolved != "Resolved: openrazer not working on g14" {
		t.Errorf("the producer's words: %+v", c)
	}
	if len(unworded) != 0 {
		t.Errorf("words that were plain were reported: %v", unworded)
	}

	// Words that are not plain, and a kind with none, are said from the scope — and reported.
	c, _ = k.Observe(t.Context(), Observation{Scope: ScopeModule, ID: "openrazer.g14", Token: "x", Kind: "test-unworded",
		Machine: "g14", Severity: Warning, Source: "health", Summary: "openrazer on g14 is not healthy"})
	if c.Headline != "Openrazer on g14 needs a look" || !strings.Contains(c.Explanation, "Nothing to do yet") {
		t.Errorf("the scope's words: %+v", c)
	}
	c, _ = k.Observe(t.Context(), Observation{Scope: ScopePlan, ID: "plan-1791454185265004861", Kind: "test-silent",
		Severity: Warning, Source: "S16", Summary: "the walk waits", Headline: "plan-1791454185265004861 waits"})
	if strings.Contains(c.Headline, "plan-") || c.Headline != "A walk needs a look" {
		t.Errorf("an id reached the headline: %+v", c)
	}
	if len(unworded) != 2 || !strings.Contains(unworded[0], "no plain words") || !strings.Contains(unworded[1], "not plain") {
		t.Errorf("what was said in borrowed words was not reported: %v", unworded)
	}
}

// **A healer that gave up says so in the explanation**: the words of the kind said "nothing to do"; once the
// budget is spent, the operator is needed.
func TestAnEscalatedConditionSaysItNeedsTheOperator(t *testing.T) {
	k, _, _, _ := keeper(t)
	ctx := t.Context()
	o := Observation{Scope: ScopeMachine, ID: "ace", Kind: "silent", Machine: "ace", Severity: Warning, Source: "S1",
		Summary: "ace is silent", Headline: "ace is not answering", Explanation: "Nothing to do yet."}
	if _, err := k.Observe(ctx, o); err != nil {
		t.Fatal(err)
	}
	c, _, err := k.Escalate(ctx, o.Key(), Attempt{What: "budget spent", Outcome: "escalated", By: "healer H1"})
	if err != nil {
		t.Fatal(err)
	}
	if !strings.HasSuffix(c.Explanation, Escalated) {
		t.Fatalf("escalated: %q", c.Explanation)
	}
	c, _ = k.Observe(ctx, o)
	if strings.Count(c.Explanation, Escalated) != 1 {
		t.Errorf("seen again after escalation: %q", c.Explanation)
	}
}