package api

import (
	"encoding/json"
	"os"
	"path/filepath"
	"testing"
)

func TestProgressRoundTrip(t *testing.T) {
	st, sc, h, booksDir := setupAPI(t)
	atok := adminToken(t, h)
	do(h, "POST", "/api/users", atok, map[string]string{"username": "p1", "password": testPW, "role": "member"})
	mtok := loginAs(t, h, "p1", testPW)

	lib, root := newLibrary(t, st, h, atok, booksDir, "prog")
	os.WriteFile(filepath.Join(root, "a.txt"), []byte("aaa"), 0o644)
	scanNow(t, sc, lib)
	w := do(h, "GET", "/api/books?q=a", atok, nil) // title="a"(文件名去 .txt)
	var bs []map[string]any
	json.Unmarshal(w.Body.Bytes(), &bs)
	id := itoa(bs[0]["id"])

	w = do(h, "PUT", "/api/books/"+id+"/progress", mtok,
		map[string]any{"locator": map[string]int{"page": 12}, "percent": 0.42})
	if w.Code != 204 {
		t.Fatalf("put %d %s", w.Code, w.Body)
	}
	w = do(h, "GET", "/api/progress", mtok, nil)
	var rows []map[string]any
	json.Unmarshal(w.Body.Bytes(), &rows)
	if len(rows) != 1 || rows[0]["percent"].(float64) != 0.42 || rows[0]["title"] != "a" {
		t.Fatalf("get %s", w.Body)
	}
	if rows[0]["locator"].(map[string]any)["page"].(float64) != 12 {
		t.Fatalf("locator %s", w.Body)
	}
	// upsert 覆盖
	do(h, "PUT", "/api/books/"+id+"/progress", mtok, map[string]any{"locator": map[string]int{"page": 20}, "percent": 0.8})
	w = do(h, "GET", "/api/progress", mtok, nil)
	json.Unmarshal(w.Body.Bytes(), &rows)
	if len(rows) != 1 || rows[0]["percent"].(float64) != 0.8 {
		t.Fatalf("upsert %s", w.Body)
	}
	// 别人的进度不可见
	w = do(h, "GET", "/api/progress", atok, nil)
	json.Unmarshal(w.Body.Bytes(), &rows)
	if len(rows) != 0 {
		t.Fatalf("leak %s", w.Body)
	}
	// 校验
	w = do(h, "PUT", "/api/books/"+id+"/progress", mtok, map[string]any{"percent": 1.5})
	if w.Code != 400 {
		t.Fatalf("bad percent want 400 got %d", w.Code)
	}
	w = do(h, "PUT", "/api/books/999999/progress", mtok, map[string]any{"percent": 0.5})
	if w.Code != 404 {
		t.Fatalf("bad book want 404 got %d", w.Code)
	}
	// 列表 percent 内嵌(Task 10 预告的断言在此兑现)
	w = do(h, "GET", "/api/books", mtok, nil)
	json.Unmarshal(w.Body.Bytes(), &bs)
	if bs[0]["percent"].(float64) != 0.8 {
		t.Fatalf("list percent %+v", bs[0])
	}
	// 删书,进度按 path 保留,重扫后 0.8 回来
	do(h, "DELETE", "/api/books/"+id, atok, nil)
	os.WriteFile(filepath.Join(root, "a.txt"), []byte("aaa"), 0o644)
	scanNow(t, sc, lib)
	w = do(h, "GET", "/api/books?q=a", mtok, nil)
	json.Unmarshal(w.Body.Bytes(), &bs)
	if bs[0]["percent"].(float64) != 0.8 {
		t.Fatalf("progress did not survive delete+rescan: %+v", bs[0])
	}
}