package markdown

import (
	"strings"
	"testing"
)

func TestParseIgnoreCodeFence(t *testing.T) {
	src := "公开\n\n```\n[hide login]\n假的\n[/hide]\n```\n\n结尾\n"
	blocks, err := ParseHideBlocks(src)
	if err != nil {
		t.Fatal(err)
	}
	if len(blocks) != 0 {
		t.Fatalf("expected 0 blocks, got %d", len(blocks))
	}
}

func TestParseMixedAndDerive(t *testing.T) {
	src := "公开段\n\n[hide login]\n登录内容\n[/hide]\n\n[hide points=10]\n积分A\n[/hide]\n\n[hide points=5]\n积分B\n[/hide]\n"
	blocks, err := ParseHideBlocks(src)
	if err != nil {
		t.Fatal(err)
	}
	if len(blocks) != 3 {
		t.Fatalf("expected 3 blocks, got %d", len(blocks))
	}
	d := DeriveAccess(blocks)
	if d.Access != "mixed" {
		t.Fatalf("access=%s", d.Access)
	}
	if d.Points != 15 {
		t.Fatalf("points=%d", d.Points)
	}
}

func TestParseNestedRejected(t *testing.T) {
	src := "[hide login]\n外\n[hide reply]\n内\n[/hide]\n[/hide]\n"
	_, err := ParseHideBlocks(src)
	if err != ErrHideNested {
		t.Fatalf("want ErrHideNested, got %v", err)
	}
}

func TestSanitizeLocksBody(t *testing.T) {
	src := "公开\n\n[hide login]\n秘密内容\n[/hide]\n\n尾\n"
	out, fully := SanitizeForViewer(src, ViewerCaps{})
	if fully {
		t.Fatal("should not be fully locked")
	}
	if strings.Contains(out, "秘密内容") {
		t.Fatalf("leaked: %q", out)
	}
	if !strings.Contains(out, "[hide login locked]") {
		t.Fatalf("missing locked marker: %q", out)
	}
	if !strings.Contains(out, "公开") || !strings.Contains(out, "尾") {
		t.Fatalf("public parts lost: %q", out)
	}
}

func TestSanitizeUnlockLogin(t *testing.T) {
	src := "[hide login]\n秘密\n[/hide]\n"
	out, fully := SanitizeForViewer(src, ViewerCaps{LoggedIn: true})
	if fully {
		t.Fatal("should see content")
	}
	if !strings.Contains(out, "秘密") {
		t.Fatalf("missing body: %q", out)
	}
	if strings.Contains(out, "locked") {
		t.Fatalf("should not lock: %q", out)
	}
}

func TestSanitizeBypass(t *testing.T) {
	src := "[hide points=9]\n付费\n[/hide]\n"
	out, _ := SanitizeForViewer(src, ViewerCaps{Bypass: true})
	if !strings.Contains(out, "付费") {
		t.Fatalf("bypass failed: %q", out)
	}
}

func TestSanitizePointsPaid(t *testing.T) {
	src := "[hide points=3]\n付费文\n[/hide]\n"
	out, _ := SanitizeForViewer(src, ViewerCaps{LoggedIn: true, PointsPaid: true})
	if !strings.Contains(out, "付费文") {
		t.Fatalf("paid unlock failed: %q", out)
	}
}

func TestFullyLocked(t *testing.T) {
	src := "[hide reply]\n仅回复\n[/hide]\n"
	_, fully := SanitizeForViewer(src, ViewerCaps{LoggedIn: true})
	if !fully {
		t.Fatal("expected fully locked")
	}
}

func TestCodeInsideHide(t *testing.T) {
	src := "[hide login]\n```\n[hide reply]\n伪\n[/hide]\n```\n真\n[/hide]\n"
	blocks, err := ParseHideBlocks(src)
	if err != nil {
		t.Fatal(err)
	}
	if len(blocks) != 1 {
		t.Fatalf("got %d", len(blocks))
	}
	if !strings.Contains(blocks[0].Body, "真") {
		t.Fatalf("body=%q", blocks[0].Body)
	}
}

func TestParsePasswordAndSanitize(t *testing.T) {
	src := "公开\n\n[hide password=secret1]\n密码内容\n[/hide]\n"
	blocks, err := ParseHideBlocks(src)
	if err != nil {
		t.Fatal(err)
	}
	if len(blocks) != 1 || blocks[0].Kind != HideKindPassword || blocks[0].Password != "secret1" {
		t.Fatalf("%+v", blocks)
	}
	d := DeriveAccess(blocks)
	if d.Access != "password" {
		t.Fatalf("access=%s", d.Access)
	}
	out, fully := SanitizeForViewer(src, ViewerCaps{})
	if fully {
		t.Fatal("public visible")
	}
	if strings.Contains(out, "secret1") || strings.Contains(out, "密码内容") {
		t.Fatalf("leaked: %q", out)
	}
	if !strings.Contains(out, "[hide password locked]") {
		t.Fatalf("%q", out)
	}
	out2, _ := SanitizeForViewer(src, ViewerCaps{PasswordUnlocked: map[int]bool{0: true}})
	if !strings.Contains(out2, "密码内容") {
		t.Fatalf("unlock failed: %q", out2)
	}
	if strings.Contains(out2, "secret1") {
		t.Fatalf("password leaked after unlock: %q", out2)
	}
}

func TestMatchPasswordBlocks(t *testing.T) {
	src := "[hide password=aaa]\nA\n[/hide]\n\n[hide password=bbb]\nB\n[/hide]\n"
	hit, err := MatchPasswordBlocks(src, "bbb")
	if err != nil {
		t.Fatal(err)
	}
	if len(hit) != 1 || hit[0] != 1 {
		t.Fatalf("%v", hit)
	}
}

func TestPasswordNeed(t *testing.T) {
	_, err := ParseHideBlocks("[hide password]\n无密码\n[/hide]\n")
	if err != ErrHidePasswordNeed {
		t.Fatalf("got %v", err)
	}
}

func TestWrapContentAsHide(t *testing.T) {
	got := WrapContentAsHide("points", 20, "旧正文")
	if !strings.HasPrefix(got, "[hide points=20]\n") {
		t.Fatalf("%q", got)
	}
	if !strings.Contains(got, "旧正文") {
		t.Fatal(got)
	}
}

func TestTimelineDoesNotBreakHideValidate(t *testing.T) {
	src := "[timeline]\n## 2026-09-16 feat\n说明\n[/timeline]\n"
	if err := ValidateHideContent(src); err != nil {
		t.Fatalf("timeline-only should pass: %v", err)
	}
}