package osv_test

import (
	"fmt"
	"net/http"
	"net/http/httptest"
	"os"
	"path/filepath"
	"testing"

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

	"github.com/aquasecurity/vuln-list-update/osv"
)

func Test_Update(t *testing.T) {
	tests := []struct {
		name      string
		path      string
		ecosystem map[string]string
		wantFiles []string
		wantErr   string
	}{
		{
			name: "happy path python",
			ecosystem: map[string]string{
				"PyPI": "python",
			},
			wantFiles: []string{
				filepath.Join("python", "cherrypy", "PYSEC-2006-1.json"),
				filepath.Join("python", "trac", "PYSEC-2005-1.json"),
				filepath.Join("python", "trac", "PYSEC-2006-2.json"),
				filepath.Join("python", "aiohttp", "PYSEC-2023-120.json"),
			},
		},
		{
			name: "happy path Go",
			ecosystem: map[string]string{
				"Go": "go",
			},
			wantFiles: []string{
				filepath.Join("go", "github.com", "gin-gonic", "gin", "GO-2020-0001.json"),
				filepath.Join("go", "github.com", "seccomp", "libseccomp-golang", "GO-2020-0007.json"),
				filepath.Join("go", "github.com", "tidwall", "gjson", "GO-2021-0059.json"),
			},
		},
		{
			name: "happy path python+rust",
			ecosystem: map[string]string{
				"PyPI":      "python",
				"crates.io": "rust",
			},
			wantFiles: []string{
				// Python
				filepath.Join("python", "cherrypy", "PYSEC-2006-1.json"),
				filepath.Join("python", "trac", "PYSEC-2005-1.json"),
				filepath.Join("python", "trac", "PYSEC-2006-2.json"),

				// Rust
				filepath.Join("rust", "openssl", "RUSTSEC-2016-0001.json"),
				filepath.Join("rust", "smallvec", "RUSTSEC-2019-0009.json"),
				filepath.Join("rust", "tar", "RUSTSEC-2018-0002.json"),
			},
		},
		{
			name: "sad path, unable to download archive",
			path: "/%s/unknown.zip",
			ecosystem: map[string]string{
				"PyPI": "python",
			},
			wantErr: "bad response code: 404",
		},
	}

	for _, tt := range tests {
		t.Run(tt.name, func(t *testing.T) {
			mux := http.NewServeMux()
			for name, dir := range tt.ecosystem {
				b, err := os.ReadFile(filepath.Join("testdata", dir, "all.zip"))
				require.NoError(t, err)
				mux.HandleFunc(fmt.Sprintf("/%s/all.zip", name), func(w http.ResponseWriter, r *http.Request) {
					_, err = w.Write(b)
					require.NoError(t, err)
				})
			}
			ts := httptest.NewServer(mux)

			defer ts.Close()

			// build test settings
			testDir := t.TempDir()
			testURL := ts.URL + "/%s/all.zip"
			if tt.path != "" {
				testURL = ts.URL + tt.path
				fmt.Println(testURL)
			}

			c := osv.NewOsv(osv.WithURL(testURL), osv.WithDir(testDir), osv.WithEcosystem(tt.ecosystem))

			err := c.Update()
			if tt.wantErr != "" {
				require.Error(t, err)
				assert.Contains(t, err.Error(), tt.wantErr)
				return
			}
			assert.NoError(t, err)

			for _, wantFile := range tt.wantFiles {
				got, err := os.ReadFile(filepath.Join(testDir, wantFile))
				require.NoError(t, err)

				want, err := os.ReadFile(filepath.Join("testdata", "golden", wantFile))
				require.NoError(t, err)

				assert.JSONEq(t, string(want), string(got))
			}
		})
	}
}