package main

import (
	"bytes"
	"encoding/json"
	"io"
	"net/http"
	"strings"
	"testing"

	"github.com/stretchr/testify/assert"
	"github.com/stretchr/testify/require"
)

// TestMediaNoteLengthLimits verifies the note content validator cap
// (internal/handlers/media.go): content up to 100,000 chars is accepted,
// longer content is rejected with 400.
func TestMediaNoteLengthLimits(t *testing.T) {
	setup := setupTestServer(t)

	token := setup.Token
	mediaItemID := createTestMediaItemID(t, setup)

	postNote := func(content string) int {
		payload := map[string]interface{}{
			"content":  content,
			"position": "page:1",
		}
		body, _ := json.Marshal(payload)
		req, _ := http.NewRequest("POST", setup.Server.URL+"/api/media-items/"+mediaItemID+"/notes", bytes.NewBuffer(body))
		req.Header.Set("Content-Type", "application/json")
		req.Header.Set("Authorization", "Bearer "+token)

		client := &http.Client{}
		resp, err := client.Do(req)
		require.NoError(t, err)
		defer func(Body io.ReadCloser) {
			_ = Body.Close()
		}(resp.Body)
		return resp.StatusCode
	}

	t.Run("50k-char note accepted", func(t *testing.T) {
		assert.Equal(t, http.StatusCreated, postNote(strings.Repeat("a", 50000)))
	})

	t.Run("100k-char note accepted at boundary", func(t *testing.T) {
		assert.Equal(t, http.StatusCreated, postNote(strings.Repeat("b", 100000)))
	})

	t.Run("over-limit note rejected", func(t *testing.T) {
		assert.Equal(t, http.StatusBadRequest, postNote(strings.Repeat("c", 100001)))
	})
}