package calendartest

import (
	"amadan.net/oficina/estilo.git/base"
	estilobusy "amadan.net/oficina/estilo.git/busy"
	"amadan.net/oficina/estilo.git/chrome"
	"amadan.net/oficina/estilo.git/menu"
	"amadan.net/oficina/estilo.git/sky"
	"amadan.net/oficina/estilo.git/theme"
	"bytes"
	"os"
	"path/filepath"
	"testing"

	"amadan.net/rastrillo/rastrillo/ui"
)

// vendoredTheme is the theme this app was scaffolded with. Change it
// here when you swap static/theme.css for another of ui.ThemeNames().
const vendoredTheme = "day"

// vendoredIsMine names the vendored files this app has edited
// DELIBERATELY. Add one here when you mean to diverge: this test stops
// pinning it, and rastrillo doctor leaves it alone too. The file was
// yours from the moment the scaffold wrote it — this is only where you
// record that the edit was on purpose, so the next reader (and the next
// upgrade) can tell it from drift.
var vendoredIsMine = map[string]bool{
	// rastrillo's shim as estilo carries it: without the old busy rule,
	// which would fight busy.js. Pinned to estilo by TestBusyFilesAreEstilos.
	"rastrillo.js": true,
	// Calma with Calendar's accent, from estilo (estilo AGENTS.md,
	// decisions table, row 8; this repo's ruling 2 is superseded). Pinned
	// to estilo instead, by TestThemeIsEstilosForCalendar below.
	"theme.css": true,
	// Calendar's OWN calendar.js (bring the working day into view on
	// load), not rastrillo's: from v0.26 rastrillo vendors a calendar.js
	// of its own, the month-grid overlay for date fields, under the same
	// name. Listed so doctor --fix never overwrites ours with it. Without
	// rastrillo's overlay, datetime.js's button opens the browser's own
	// picker, as it did on v0.23. Adopting the overlay means renaming
	// ours first.
	"calendar.js": true,
	// estilo's busy.js, not rastrillo's: from fb806a2 rastrillo's copy
	// learned to leave pow.js forms alone, and Calendar has no pow (auth
	// runs ProofOff). Pinned to estilo by TestBusyFilesAreEstilos, like
	// rastrillo.js; it follows estilo's when estilo takes the change.
	"busy.js": true,
	// rastrillo's console shell (from v0.27), which Calendar does not
	// draw: its bar and page frame are estilo's chrome. Never vendored,
	// so there is nothing here to pin.
	"shell.css": true,
	"shell.js":  true,
}

// TestThemeIsEstilosForCalendar pins static/theme.css to the estilo this
// app is built against. After an estilo upgrade, re-write it with
// `go run ./scripts/writeestilo` — never by hand.
func TestThemeIsEstilosForCalendar(t *testing.T) {
	want, ok := theme.ForApp("calendar")
	if !ok {
		t.Fatal("estilo's theme ring has no calendar")
	}
	got, err := os.ReadFile(filepath.Join("..", "calendar", "static", "theme.css"))
	if err != nil {
		t.Fatal(err)
	}
	if !bytes.Equal(got, want) {
		t.Error("static/theme.css differs from estilo's theme for calendar; run go run ./scripts/writeestilo")
	}
}

// The scaffold delivered these files once; they are app-owned from
// then on. This test pins each vendored copy byte-identical to the
// library it came from: a reviewer runs the suite instead of reading
// ~56KB of assets as app diff, and a framework upgrade that forgets
// to re-copy is caught instead of drifting silently.
//
// The list is ui.VendoredAssets — the same function rastrillo new
// wrote these files from and rastrillo doctor compares them against —
// so a file added to the library's vendored set is pinned here without
// this file changing.
func TestVendoredAssetsMatchTheLibrary(t *testing.T) {
	assets, ok := ui.VendoredAssets(vendoredTheme)
	if !ok {
		t.Fatalf("unknown theme %q", vendoredTheme)
	}
	for name, lib := range assets {
		if vendoredIsMine[name] {
			continue
		}
		vendored, err := os.ReadFile(filepath.Join("..", "calendar", "static", name))
		if err != nil {
			t.Errorf("read vendored %s: %v", name, err)
			continue
		}
		if !bytes.Equal(vendored, lib) {
			t.Errorf("static/%s differs from the library copy; re-copy it with rastrillo doctor --fix (or add it to vendoredIsMine if the edit was deliberate)", name)
		}
	}
}

// rastrillo's busy rule (Paul, 2026-09-29): a submit button's label gives
// way to a spinner for at least 650ms, the button disables, and Back
// resets it. static/ carries it as estilo does — the shim without the old
// rule, busy.js and busy.css — pinned here to the estilo this app builds
// against. After an estilo upgrade: go run ./scripts/writeestilo.
func TestBusyFilesAreEstilos(t *testing.T) {
	for name, want := range map[string][]byte{
		"rastrillo.js": estilobusy.ShimJS(),
		"busy.js":      estilobusy.JS(),
		"busy.css":     estilobusy.CSS(),
	} {
		got, err := os.ReadFile(filepath.Join("..", "calendar", "static", name))
		if err != nil {
			t.Fatal(err)
		}
		if !bytes.Equal(got, want) {
			t.Errorf("static/%s differs from estilo's; run go run ./scripts/writeestilo", name)
		}
	}
}

// The sign-in door's styles (Paul, 2026-09-29: every app's sign-in is a
// version of the Oficina sign-in screen): estilo chrome's chrome.css,
// which holds the [estilo-door] and [estilo-signin] rules, and the sky
// behind it. Pinned to the estilo this app builds against. After an
// estilo upgrade: go run ./scripts/writeestilo.
func TestDoorFilesAreEstilos(t *testing.T) {
	for name, want := range map[string][]byte{
		"chrome.css": chrome.CSS(),
		"sky.css":    sky.CSS(),
	} {
		got, err := os.ReadFile(filepath.Join("..", "calendar", "static", name))
		if err != nil {
			t.Fatal(err)
		}
		if !bytes.Equal(got, want) {
			t.Errorf("static/%s differs from estilo's; run go run ./scripts/writeestilo", name)
		}
	}
}

// The shared chrome's other files (estilo spec 2026-09-23 §1): base.css
// (the link rule), menu.css (every floating panel) and chrome.js (Esc and
// outside-click close). The layout links them in the spec's order after
// theme.css. Pinned like the door's; after an estilo upgrade:
// go run ./scripts/writeestilo.
func TestSharedChromeFilesAreEstilos(t *testing.T) {
	for name, want := range map[string][]byte{
		"base.css":  base.CSS(),
		"menu.css":  menu.CSS(),
		"chrome.js": chrome.JS(),
	} {
		got, err := os.ReadFile(filepath.Join("..", "calendar", "static", name))
		if err != nil {
			t.Fatal(err)
		}
		if !bytes.Equal(got, want) {
			t.Errorf("static/%s differs from estilo's; run go run ./scripts/writeestilo", name)
		}
	}
}