package monitor

import (
	"fmt"
	"os"
	"path/filepath"
	"strings"
	"testing"

	"gitea.dooplex.hu/admin/felhom-controller/internal/config"
	"gitea.dooplex.hu/admin/felhom-controller/internal/settings"
	"gitea.dooplex.hu/admin/felhom-controller/internal/system"
)

// R-516 item 10 — the resource warnings („SSD disk usage high: 90%") reached the household's banner in
// English on every page. checkResources now attaches the dashboard's own sentence (a bundle key) beside
// each one, and the wire text is byte-for-byte what it was.
//
// COMPANION RED-PROOF: give the SSD warning a zero MsgRef (addWarning) — the "warn" case fails here
// and the banner test in internal/web shows the English wire text again.
func TestR516_ResourceWarningsCarryTheirDashboardSentence(t *testing.T) {
	cfg := config.Default()
	cases := []struct {
		name               string
		info               system.SystemInfo
		wantIssue, wantKey []string
		wantWire           []string
	}{
		{"warn", system.SystemInfo{DiskPercent: 85, HDDConfigured: true, HDDPercent: 85, MemPercent: 90, CPUPercent: 95,
			TemperatureCelsius: 80, TemperatureSource: "coretemp"}, nil,
			[]string{"health.system_disk_high", "health.data_disk_high", "health.memory_high", "health.cpu_high", "health.temperature_high"},
			[]string{"SSD disk usage high: 85%", "HDD disk usage high: 85%", "Memory usage high: 90%", "CPU usage high: 95%", "Temperature high: 80°C (coretemp)"}},
		{"critical", system.SystemInfo{DiskPercent: 95, HDDConfigured: true, HDDPercent: 96},
			[]string{"health.system_disk_critical", "health.data_disk_critical"}, nil,
			[]string{"SSD disk usage critical: 95%", "HDD disk usage critical: 96%"}},
	}
	for _, c := range cases {
		r := &HealthReport{}
		checkResources(r, c.info, cfg, nil, false)
		texts, keys := r.Warnings, []string{}
		for i := range r.Warnings {
			keys = append(keys, r.WarningMsgAt(i).Key)
		}
		if c.wantIssue != nil {
			texts, keys = r.Issues, nil
			for i := range r.Issues {
				keys = append(keys, r.IssueMsgAt(i).Key)
			}
		}
		want := c.wantKey
		if c.wantIssue != nil {
			want = c.wantIssue
		}
		if len(texts) != len(c.wantWire) {
			t.Fatalf("%s: %d entries %q, want %d — the cases below would be compared against nothing", c.name, len(texts), texts, len(c.wantWire))
		}
		for i := range texts {
			if texts[i] != c.wantWire[i] {
				t.Errorf("%s: the wire text moved: %q, want %q", c.name, texts[i], c.wantWire[i])
			}
			if keys[i] != want[i] {
				t.Errorf("%s: %q carries dashboard key %q, want %q", c.name, texts[i], keys[i], want[i])
			}
		}
		if len(r.Warnings) != len(r.WarningKinds) || len(r.Warnings) != len(r.WarningMsgs) || len(r.Issues) != len(r.IssueMsgs) {
			t.Errorf("%s: the parallel slices drifted apart", c.name)
		}
	}
}

// R-79 option A (operator ruling D3, 2026-10-08) — the six producers R-516 item 10 left verbatim:
// Docker unreachable, a protected container down, and the four storage-path entries. Each now
// carries its dashboard sentence; the wire text is byte for byte what it was (it is ON THE WIRE,
// report health.*; the frozen storage formats are also pinned by TestStorageWarningFormatsAreFrozen).
//
// COMPANION RED-PROOF: give any one of them a zero MsgRef (e.g. the unavailable-path warning back to
// addWarning) — its case fails here, and TestR79_StorageBannerFollowsTheHousehold in internal/web
// shows the Hungarian wire text to an English household again.
func TestR79_RemainingProducersCarryTheirDashboardSentence(t *testing.T) {
	type entry struct{ wire, key string }
	check := func(name string, texts []string, msgs func(int) MsgRef, want []entry) {
		t.Helper()
		if len(texts) != len(want) {
			t.Fatalf("%s: %d entries %q, want %d — the cases below would be compared against nothing", name, len(texts), texts, len(want))
		}
		for i := range texts {
			if texts[i] != want[i].wire {
				t.Errorf("%s: the wire text moved: %q, want %q", name, texts[i], want[i].wire)
			}
			if k := msgs(i).Key; k != want[i].key {
				t.Errorf("%s: %q carries dashboard key %q, want %q", name, texts[i], k, want[i].key)
			}
		}
	}

	// Docker and protected containers: driven through the same adders RunHealthCheck calls.
	r := &HealthReport{}
	addDockerIssue(r, fmt.Errorf("docker not reachable: exit status 1"))
	addProtectedIssues(r, []string{"cloudflared", "traefik"})
	check("docker+protected", r.Issues, r.IssueMsgAt, []entry{
		{"Docker: docker not reachable: exit status 1", "health.docker_unreachable"},
		{"Protected container not running: cloudflared", "health.protected_container_down"},
		{"Protected container not running: traefik", "health.protected_container_down"},
	})
	if a := r.IssueMsgAt(1).Args; len(a) != 1 || a[0] != "cloudflared" {
		t.Errorf("protected-container sentence args = %v, want [cloudflared]", a)
	}

	// Storage paths: a missing path, a path that is not a mount point at 92 %, one at 97 %.
	oldMount, oldUsage := isMountPointFn, diskUsageFn
	defer func() { isMountPointFn, diskUsageFn = oldMount, oldUsage }()
	isMountPointFn = func(p string) bool { return !strings.HasSuffix(p, "/notsep") }
	diskUsageFn = func(p string) *system.DiskUsageInfo {
		switch {
		case strings.HasSuffix(p, "/notsep"):
			return &system.DiskUsageInfo{UsedPercent: 92}
		case strings.HasSuffix(p, "/full"):
			return &system.DiskUsageInfo{UsedPercent: 97}
		}
		return nil
	}
	dir := t.TempDir()
	for _, sub := range []string{"notsep", "full"} {
		if err := os.Mkdir(filepath.Join(dir, sub), 0o755); err != nil {
			t.Fatal(err)
		}
	}
	missing := filepath.Join(dir, "missing")
	r = &HealthReport{}
	addStorage(r, []settings.StoragePath{{Path: missing}, {Path: dir + "/notsep"}, {Path: dir + "/full"}})
	check("storage warnings", r.Warnings, r.WarningMsgAt, []entry{
		{"Adattároló nem elérhető: " + missing, "health.storage_unavailable"},
		{"Az adattároló (" + dir + "/notsep) nem külön meghajtón van — az adatok a rendszermeghajtóra íródnak", "health.storage_not_separate"},
		{"Adattároló használat magas: " + dir + "/notsep (92%)", "health.storage_usage_high"},
	})
	check("storage issues", r.Issues, r.IssueMsgAt, []entry{
		{"Adattároló majdnem megtelt: " + dir + "/full (97%)", "health.storage_almost_full"},
	})
	if len(r.Warnings) != len(r.WarningKinds) || len(r.Warnings) != len(r.WarningMsgs) || len(r.Issues) != len(r.IssueMsgs) {
		t.Errorf("storage: the parallel slices drifted apart")
	}
	if got := r.WarningKindAt(1); got != WarnKindStorageNotSeparate {
		t.Errorf("not-separate warning lost its kind: %q", got)
	}
}