package web

import "testing"

// T4: skipFileBrowserPath skips ONLY an external drive path (under StableParentDir) that is not a live
// mountpoint. A mounted external path and any system/local path are never skipped.
// Companion red-proof: dropping the gate (always-false) makes the absent-usb case fail.
func TestSkipFileBrowserPath(t *testing.T) {
	// flash is mounted; usb is not.
	isMount := func(p string) bool { return p == StableParentDir+"/flash" }

	cases := []struct {
		path string
		want bool
	}{
		{StableParentDir + "/flash", false},  // external + mounted → keep
		{StableParentDir + "/usb", true},     // external + NOT mounted → skip
		{"/mnt/sys_drive/felhom-data", false}, // system path (not under StableParentDir) → never skip
	}
	for _, c := range cases {
		if got := skipFileBrowserPath(c.path, isMount); got != c.want {
			t.Errorf("skipFileBrowserPath(%q) = %v, want %v", c.path, got, c.want)
		}
	}
}

// F2: fbNeedsRecreate gates the FileBrowser --force-recreate so a no-op controller restart / storage
// sync no longer bounces the customer's file UI. Recreate only when config OR compose actually changed;
// the first-ever run (empty old files) differs from the generated content → recreate (creates it).
// Companion red-proof: hard-wiring the helper to always return true (the OLD unconditional behaviour)
// makes the "unchanged → no recreate" case fail — restoring the byte-equality gate turns it green.
func TestFbNeedsRecreate(t *testing.T) {
	cfg := []byte("sources:\n  - /srv/usb\n")
	compose := []byte("services:\n  filebrowser:\n    image: x\n")

	cases := []struct {
		name                             string
		oldCfg, newCfg, oldCmp, newCmp   []byte
		want                             bool
	}{
		{"unchanged → no recreate", cfg, cfg, compose, compose, false},
		{"config differs → recreate", cfg, []byte("sources:\n  - /srv/hdd\n"), compose, compose, true},
		{"compose differs → recreate", cfg, cfg, compose, []byte("services:\n  filebrowser:\n    image: y\n"), true},
		{"first run (no old files) → recreate", nil, cfg, nil, compose, true},
	}
	for _, c := range cases {
		if got := fbNeedsRecreate(c.oldCfg, c.newCfg, c.oldCmp, c.newCmp); got != c.want {
			t.Errorf("%s: fbNeedsRecreate = %v, want %v", c.name, got, c.want)
		}
	}
}