package main

import (
	"bytes"
	"encoding/json"
	"net/http"
	"net/http/httptest"
	"path/filepath"
	"testing"
)

func testServer(t *testing.T, token string) *httptest.Server {
	t.Helper()
	store, err := Open(filepath.Join(t.TempDir(), "gadfly-reports.db"))
	if err != nil {
		t.Fatal(err)
	}
	t.Cleanup(func() { store.Close() })
	srv := httptest.NewServer(newServer(store, token))
	t.Cleanup(srv.Close)
	return srv
}

func post(t *testing.T, srv *httptest.Server, token, path string, body any) *http.Response {
	t.Helper()
	b, _ := json.Marshal(body)
	req, _ := http.NewRequest("POST", srv.URL+path, bytes.NewReader(b))
	req.Header.Set("Content-Type", "application/json")
	if token != "" {
		req.Header.Set("Authorization", "Bearer "+token)
	}
	resp, err := http.DefaultClient.Do(req)
	if err != nil {
		t.Fatalf("POST %s: %v", path, err)
	}
	return resp
}

// TestServerEndToEnd: run -> reports -> grade -> scoreboard over HTTP.
func TestServerEndToEnd(t *testing.T) {
	srv := testServer(t, "")

	if resp := post(t, srv, "", "/runs", Run{RunID: "r1", Repo: "r", PR: 1, Model: "m", Provider: "p", DurationSecs: 120}); resp.StatusCode != 200 {
		t.Fatalf("POST /runs = %d", resp.StatusCode)
	}

	resp := post(t, srv, "", "/reports", []ReportIn{
		{Repo: "r", PR: 1, Lens: "security", File: "a.go", Line: 7, Title: "leak", Model: "m", Provider: "p", RunID: "r1"},
	})
	if resp.StatusCode != 200 {
		t.Fatalf("POST /reports = %d", resp.StatusCode)
	}
	var rep struct {
		FindingIDs []string `json:"finding_ids"`
	}
	json.NewDecoder(resp.Body).Decode(&rep)
	if len(rep.FindingIDs) != 1 {
		t.Fatalf("want 1 finding id, got %v", rep.FindingIDs)
	}
	id := rep.FindingIDs[0]

	if resp := post(t, srv, "", "/findings/"+id+"/grade", Grade{IsReal: true, Severity: "medium", Grader: "claude"}); resp.StatusCode != 200 {
		t.Fatalf("POST grade = %d", resp.StatusCode)
	}

	resp = mustGet(t, srv, "", "/scoreboard")
	var board []ModelStat
	json.NewDecoder(resp.Body).Decode(&board)
	if len(board) != 1 || board[0].Confirmed != 1 || board[0].BySeverity["medium"] != 1 || board[0].Minutes != 2 {
		t.Fatalf("unexpected scoreboard: %+v", board)
	}
}

// TestServerAuth: a set token gates writes but leaves /healthz open.
func TestServerAuth(t *testing.T) {
	srv := testServer(t, "secret")

	if resp := post(t, srv, "", "/runs", Run{RunID: "r1", Model: "m"}); resp.StatusCode != http.StatusUnauthorized {
		t.Errorf("unauthenticated POST = %d, want 401", resp.StatusCode)
	}
	if resp := post(t, srv, "secret", "/runs", Run{RunID: "r1", Model: "m"}); resp.StatusCode != 200 {
		t.Errorf("authenticated POST = %d, want 200", resp.StatusCode)
	}
	if resp := mustGet(t, srv, "", "/healthz"); resp.StatusCode != 200 {
		t.Errorf("healthz should be open, got %d", resp.StatusCode)
	}
}

func mustGet(t *testing.T, srv *httptest.Server, token, path string) *http.Response {
	t.Helper()
	req, _ := http.NewRequest("GET", srv.URL+path, nil)
	if token != "" {
		req.Header.Set("Authorization", "Bearer "+token)
	}
	resp, err := http.DefaultClient.Do(req)
	if err != nil {
		t.Fatalf("GET %s: %v", path, err)
	}
	return resp
}