package web

// backup_page_state holds the small pure state-pick helpers that drive the honest
// per-app / whole-page messaging on the /backups page. They are pure (no *Server,
// no I/O) so the truth-table can be unit-tested directly without a fixture Server.

// dbSectionState decides how the "Adatbázisok" section (and the "Adatbázis mentve"
// stat card) should read, given how many databases were discovered live at render
// time and how many dump files exist on disk:
//   - "dumps"    — dump files exist → show the real dump table / count.
//   - "pending"  — a database was discovered but no dump written yet → "first run tonight".
//   - "embedded" — neither: the deployed apps carry embedded DBs (e.g. SQLite) that ride
//     the file/volume backup; no separate dump is expected, so a bare "0" would lie.
//
// dumps wins over discovered: stale dumps from a since-removed DB app are still a real,
// restorable artifact and must be shown normally (see the §8 edge-case table).
func dbSectionState(discovered, dumps int) string {
	switch {
	case dumps > 0:
		return "dumps"
	case discovered > 0:
		return "pending"
	default:
		return "embedded"
	}
}

// tier3State decides the per-app "3. mentés" (off-box / off-site) row state:
//   - "unconfigured"   — no off-box target set (configured wins over a stale per-app toggle).
//   - "off"            — target set but this app is not toggled for off-box backup.
//   - "escrow_pending" — toggled, but the repo password is not yet escrowed (fork-4 gate):
//     runs are paused, so we must NOT imply a successful run.
//   - "active"         — toggled and escrowed: the app is included in the off-box runs.
//
// Precedence is strict: configured → toggle → escrow. Anything other than "escrowed"
// while toggled is treated as escrow-pending (never "active"), so a pre-pending LastStatus
// of "ok" can never surface a false "Sikeres".
func tier3State(configured, toggled bool, escrowState string) string {
	switch {
	case !configured:
		return "unconfigured"
	case !toggled:
		return "off"
	case escrowState != "escrowed":
		return "escrow_pending"
	default:
		return "active"
	}
}

// driveFilesNoteFor is the one sentence under a class-A app's Tier-1 row: where the household's own
// FILES are protected, said in the state the box is actually in.
//
// R-543. v0.244.0 shipped this sentence in one form — „a távoli másolat … védi" — and it was true of
// the design and false of a fresh box: off-site is ON by default (hub v0.116.0) but PAUSED until the
// household performs the escrow ceremony, which nothing asked them to do. A sentence that promises a
// copy which is not running is the same class of lie R-537 and R-538 were filed for, committed by the
// fix for them.
//
// It is pure, and it takes tier3State's OWN vocabulary rather than re-deriving the state, so the row
// and the sentence can never disagree:
//   "active"          → the copy exists and runs        → „védi"
//   "escrow_pending"  → enabled, paused for the code    → „védené … szünetel" + the route to fix it
//   "off"/"unconfig"  → no off-site at all              → say so, and name both ways out
// The link is returned separately so the template renders a real anchor and the copy gate sees plain
// text; empty note means render nothing (an app whose data is in its volumes needs no sentence).
func driveFilesNoteFor(hasDriveFileLegs bool, tier3State string, tier2Configured bool) (note, linkHref, linkText string) {
	if !hasDriveFileLegs {
		return "", "", ""
	}
	switch tier3State {
	case "active":
		return "Az alkalmazás fájljait a távoli másolat (és a második meghajtó) védi — ez a helyi mentés a beállításokat és az adatbázist tartalmazza.", "", ""
	case "escrow_pending":
		return "Az alkalmazás fájljait a távoli másolat védené — a távoli mentés a helyreállítási kód létrehozásáig szünetel.", "/backup/escrow", "Helyreállítási kód létrehozása"
	default:
		if tier2Configured {
			return "Az alkalmazás fájljait a második meghajtóra készülő másolat védi — ez a helyi mentés a beállításokat és az adatbázist tartalmazza.", "", ""
		}
		return "Az alkalmazás fájljairól jelenleg nincs másolat — kapcsold be a távoli mentést vagy adj hozzá második meghajtót.", "/backups/remote", "Távoli mentés beállítása"
	}
}