package routes

import (
	"encoding/json"
	"net/http"
	"net/http/httptest"
	"strings"
	"testing"

	"github.com/gin-gonic/gin"
)

func newCommonRoutesTestRouter() *gin.Engine {
	gin.SetMode(gin.TestMode)
	r := gin.New()
	RegisterCommonRoutes(r)
	return r
}

func TestCommonRoutes_ClaudeCodeBootstrap(t *testing.T) {
	r := newCommonRoutesTestRouter()

	w := httptest.NewRecorder()
	req, _ := http.NewRequest(http.MethodGet, "/api/claude_cli/bootstrap", nil)
	r.ServeHTTP(w, req)

	if w.Code != http.StatusOK {
		t.Fatalf("status = %d, want %d", w.Code, http.StatusOK)
	}

	var body struct {
		ClientData             any                       `json:"client_data"`
		AdditionalModelOptions []map[string]any          `json:"additional_model_options"`
		AdditionalModelCosts   map[string]map[string]any `json:"additional_model_costs"`
	}
	if err := json.Unmarshal(w.Body.Bytes(), &body); err != nil {
		t.Fatalf("unmarshal response: %v", err)
	}
	if body.ClientData != nil {
		t.Fatalf("client_data = %#v, want nil", body.ClientData)
	}
	if body.AdditionalModelOptions == nil || len(body.AdditionalModelOptions) != 0 {
		t.Fatalf("additional_model_options = %#v, want empty array", body.AdditionalModelOptions)
	}
	if body.AdditionalModelCosts == nil || len(body.AdditionalModelCosts) != 0 {
		t.Fatalf("additional_model_costs = %#v, want empty object", body.AdditionalModelCosts)
	}
}

func TestCommonRoutes_ClaudeCodePolicyLimits(t *testing.T) {
	r := newCommonRoutesTestRouter()

	w := httptest.NewRecorder()
	req, _ := http.NewRequest(http.MethodGet, "/api/claude_code/policy_limits", nil)
	r.ServeHTTP(w, req)

	if w.Code != http.StatusOK {
		t.Fatalf("status = %d, want %d", w.Code, http.StatusOK)
	}

	var body struct {
		Restrictions map[string]struct {
			Allowed bool `json:"allowed"`
		} `json:"restrictions"`
	}
	if err := json.Unmarshal(w.Body.Bytes(), &body); err != nil {
		t.Fatalf("unmarshal response: %v", err)
	}
	if body.Restrictions == nil || len(body.Restrictions) != 0 {
		t.Fatalf("restrictions = %#v, want empty object", body.Restrictions)
	}
}

func TestCommonRoutes_GrowthBookJSONRoutes(t *testing.T) {
	r := newCommonRoutesTestRouter()

	testCases := []struct {
		name   string
		method string
		path   string
	}{
		{name: "features", method: http.MethodGet, path: "/api/features/sdk-zAZezfDKGoZuXXKe"},
		{name: "eval", method: http.MethodPost, path: "/api/eval/sdk-zAZezfDKGoZuXXKe"},
	}

	for _, tc := range testCases {
		t.Run(tc.name, func(t *testing.T) {
			w := httptest.NewRecorder()
			req, _ := http.NewRequest(tc.method, tc.path, strings.NewReader(`{"attributes":{}}`))
			req.Header.Set("Content-Type", "application/json")
			r.ServeHTTP(w, req)

			if w.Code != http.StatusOK {
				t.Fatalf("status = %d, want %d", w.Code, http.StatusOK)
			}
			if got := w.Header().Get("x-sse-support"); got != "enabled" {
				t.Fatalf("x-sse-support = %q, want %q", got, "enabled")
			}

			var body struct {
				Features    map[string]any `json:"features"`
				DateUpdated string         `json:"dateUpdated"`
			}
			if err := json.Unmarshal(w.Body.Bytes(), &body); err != nil {
				t.Fatalf("unmarshal response: %v", err)
			}
			if body.Features == nil || len(body.Features) != 0 {
				t.Fatalf("features = %#v, want empty object", body.Features)
			}
			if body.DateUpdated != claudeCodeGrowthBookDateUpdated {
				t.Fatalf("dateUpdated = %q, want %q", body.DateUpdated, claudeCodeGrowthBookDateUpdated)
			}
		})
	}
}

func TestCommonRoutes_GrowthBookSSERoutes(t *testing.T) {
	r := newCommonRoutesTestRouter()

	testPaths := []string{
		"/sub/sdk-zAZezfDKGoZuXXKe",
		"/sub/features/sdk-zAZezfDKGoZuXXKe",
	}

	for _, path := range testPaths {
		t.Run(path, func(t *testing.T) {
			w := httptest.NewRecorder()
			req, _ := http.NewRequest(http.MethodGet, path, nil)
			r.ServeHTTP(w, req)

			if w.Code != http.StatusOK {
				t.Fatalf("status = %d, want %d", w.Code, http.StatusOK)
			}
			if got := w.Header().Get("Content-Type"); !strings.HasPrefix(got, "text/event-stream") {
				t.Fatalf("Content-Type = %q, want text/event-stream*", got)
			}

			body := w.Body.String()
			if !strings.Contains(body, "event:features") {
				t.Fatalf("SSE body missing features event: %q", body)
			}
			if !strings.Contains(body, `"dateUpdated":"`+claudeCodeGrowthBookDateUpdated+`"`) {
				t.Fatalf("SSE body missing dateUpdated payload: %q", body)
			}
		})
	}
}