package api

import (
	"encoding/json"
	"net/http"
	"strconv"
	"testing"
)

func shareLinkPath(gid int64) string {
	return "/api/v1/gardens/" + strconv.FormatInt(gid, 10) + "/share-link"
}
func publicGardenPath(token string) string { return "/api/v1/public/gardens/" + token }

// TestPublicShareLinkAPI checks the HTTP surface: owner-only link management, and
// an unauthenticated public read that returns 200 (never a redirect) for a live
// token and 404 for an unknown/rotated/disabled one — without a session cookie.
func TestPublicShareLinkAPI(t *testing.T) {
	r := authEngine(t, localCfg())
	owner := registerAndCookie(t, r, "owner@example.com")
	other := registerAndCookie(t, r, "other@example.com")
	gid := createGardenAPI(t, r, owner, "Owner's yard")

	// Seed a bed so the public payload has visible content.
	if w := doJSON(t, r, http.MethodPost, objectsPath(gid),
		map[string]any{"kind": "bed", "xCm": 500, "yCm": 500, "widthCm": 200, "heightCm": 200}, owner); w.Code != http.StatusCreated {
		t.Fatalf("seed bed = %d, body %s", w.Code, w.Body.String())
	}

	// Disabled by default.
	w := doJSON(t, r, http.MethodGet, shareLinkPath(gid), nil, owner)
	if w.Code != http.StatusOK {
		t.Fatalf("get link = %d, body %s", w.Code, w.Body.String())
	}
	if decodeMap(t, w.Body.Bytes())["enabled"] != false {
		t.Fatalf("new garden link should be disabled: %s", w.Body.String())
	}

	// A non-owner can't manage the link (garden invisible to them → 404 masked).
	if w := doJSON(t, r, http.MethodPost, shareLinkPath(gid), nil, other); w.Code != http.StatusNotFound {
		t.Errorf("non-owner enable = %d, want 404", w.Code)
	}

	// Owner enables → a token.
	w = doJSON(t, r, http.MethodPost, shareLinkPath(gid), nil, owner)
	if w.Code != http.StatusOK {
		t.Fatalf("enable = %d, body %s", w.Code, w.Body.String())
	}
	body := decodeMap(t, w.Body.Bytes())
	if body["enabled"] != true {
		t.Fatalf("enable body = %s, want enabled", w.Body.String())
	}
	tok, _ := body["token"].(string)
	if tok == "" {
		t.Fatalf("no token in enable body: %s", w.Body.String())
	}

	// Public read works with NO cookie — the whole point is no login/redirect.
	w = doJSON(t, r, http.MethodGet, publicGardenPath(tok), nil, nil)
	if w.Code != http.StatusOK {
		t.Fatalf("public read = %d, body %s", w.Code, w.Body.String())
	}
	var full struct {
		Garden  map[string]any   `json:"garden"`
		Objects []map[string]any `json:"objects"`
	}
	if err := json.Unmarshal(w.Body.Bytes(), &full); err != nil {
		t.Fatalf("decode public: %v", err)
	}
	if int64(full.Garden["id"].(float64)) != gid {
		t.Errorf("public garden id mismatch: %s", w.Body.String())
	}
	if len(full.Objects) != 1 {
		t.Errorf("public objects = %d, want 1", len(full.Objects))
	}
	if _, leaked := full.Garden["publicToken"]; leaked {
		t.Errorf("public_token leaked into the garden payload: %s", w.Body.String())
	}

	// Rotate → a new token; the old one stops resolving.
	w = doJSON(t, r, http.MethodPost, shareLinkPath(gid), map[string]any{"rotate": true}, owner)
	newTok, _ := decodeMap(t, w.Body.Bytes())["token"].(string)
	if newTok == "" || newTok == tok {
		t.Fatalf("rotate token = %q (old %q), want a fresh token", newTok, tok)
	}
	if w := doJSON(t, r, http.MethodGet, publicGardenPath(tok), nil, nil); w.Code != http.StatusNotFound {
		t.Errorf("old token after rotate = %d, want 404", w.Code)
	}
	if w := doJSON(t, r, http.MethodGet, publicGardenPath(newTok), nil, nil); w.Code != http.StatusOK {
		t.Errorf("new token = %d, want 200", w.Code)
	}

	// Disable → the link is off and the token 404s.
	if w := doJSON(t, r, http.MethodDelete, shareLinkPath(gid), nil, owner); w.Code != http.StatusOK {
		t.Errorf("disable = %d, body %s", w.Code, w.Body.String())
	}
	if w := doJSON(t, r, http.MethodGet, publicGardenPath(newTok), nil, nil); w.Code != http.StatusNotFound {
		t.Errorf("token after disable = %d, want 404", w.Code)
	}

	// An unknown token is a plain 404, never a redirect to login.
	if w := doJSON(t, r, http.MethodGet, publicGardenPath("nope"), nil, nil); w.Code != http.StatusNotFound {
		t.Errorf("unknown token = %d, want 404", w.Code)
	}
}