package api

import (
	"errors"
	"net/http"
	"os"
	"strings"
	"testing"

	"gitea.dooplex.hu/admin/felhom-controller/internal/stacks"
	"gitea.dooplex.hu/admin/felhom-controller/internal/util"
)

// R-553 — the deploy endpoint's status code must survive the day its Hungarian words are translated.
//
// Until v0.251.0 the handler read the refusal's TEXT: „kötelező", „memória", "does not exist",
// "already deployed". Localisation slice 2 translates exactly those words, and every empty required
// field would then answer 500 instead of 400 — a server error for something the customer can fix.
//
// The table below therefore passes messages that are ALREADY translated: the words are gone, only the
// kind remains. RED-PROOF (REPORT): restore the strings.Contains chain in deployStack and this fails
// on every translated row.
func TestR553_Deploy_DecisionSurvivesWordingChange(t *testing.T) {
	cases := []struct {
		name string
		err  error
		want int
	}{
		{"required field, Hungarian as shipped", util.KindErrorf(stacks.ErrRequiredField,
			"a(z) %q (%s) mező kitöltése kötelező", "Jelszó", "PASSWORD"), http.StatusBadRequest},
		{"required field, TRANSLATED", util.KindErrorf(stacks.ErrRequiredField,
			"the %q (%s) field is required", "Password", "PASSWORD"), http.StatusBadRequest},
		{"password field, TRANSLATED", util.KindErrorf(stacks.ErrRequiredField,
			"fill in the %q field — use the Generate button", "Password"), http.StatusBadRequest},
		{"path missing, TRANSLATED", util.KindErrorf(stacks.ErrPathMissing,
			"a mappa %q nem létezik (%q mező)", "/mnt/nope", "Adatok"), http.StatusBadRequest},
		{"not enough memory, Hungarian as shipped", util.KindError(stacks.ErrNotEnoughMemory,
			"Nincs elég memória az alkalmazás telepítéséhez. Szükséges: 512 MB, Elérhető: 100 MB"), http.StatusBadRequest},
		{"not enough memory, TRANSLATED", util.KindError(stacks.ErrNotEnoughMemory,
			"Not enough memory to install this app. Needed: 512 MB, available: 100 MB"), http.StatusBadRequest},
		{"already deployed, TRANSLATED", util.KindErrorf(stacks.ErrAlreadyDeployed,
			"a(z) %q alkalmazás már telepítve van", "privatebin"), http.StatusConflict},
		{"anything else is a server error", errors.New("compose exploded"), http.StatusInternalServerError},
		{"a message that merely CONTAINS the old words is not a refusal kind",
			errors.New("docker: kötelező memória does not exist"), http.StatusInternalServerError},
	}
	for _, c := range cases {
		if got := deployStatusFor(c.err); got != c.want {
			t.Errorf("%s: deployStatusFor(%q) = %d, want %d", c.name, c.err.Error(), got, c.want)
		}
	}
}

// The seam has to be WIRED, not merely present: the handler must call deployStatusFor, and no
// decision in the deploy handler may read the error's text again (seam-built-but-never-wired, four
// instances in this repo).
func TestR553_DeployHandlerUsesTheKind(t *testing.T) {
	src, err := os.ReadFile("router.go")
	if err != nil {
		t.Fatal(err)
	}
	body := string(src)
	i := strings.Index(body, "func (r *Router) deployStack(")
	if i < 0 {
		t.Fatal("deployStack handler not found — this test no longer reads what it thinks it reads")
	}
	handler := body[i:]
	if j := strings.Index(handler[10:], "\nfunc "); j > 0 {
		handler = handler[:j+10]
	}
	if !strings.Contains(handler, "deployStatusFor(err)") {
		t.Error("the deploy handler no longer asks deployStatusFor for the status code")
	}
	// Comments may still NAME those words (this one does); a DECISION may not read them.
	for _, line := range strings.Split(handler, "\n") {
		if strings.HasPrefix(strings.TrimSpace(line), "//") {
			continue
		}
		if strings.Contains(line, "strings.Contains(err.Error()") {
			t.Errorf("the deploy handler decides by reading the error text again (R-553): %s", strings.TrimSpace(line))
		}
	}
}