package v1

import (
	"bytes"
	"fmt"
	"net/http"
	"net/http/httptest"
	"testing"

	"github.com/gin-gonic/gin"
	"github.com/stretchr/testify/suite"
	"gorm.io/driver/sqlite"
	"gorm.io/gorm"

	"github.com/gochat/gochat/internal/model"
	"github.com/gochat/gochat/internal/repository"
	"github.com/gochat/gochat/internal/service"
)

type CaptainScenarioHandlerTestSuite struct {
	suite.Suite
	db      *gorm.DB
	handler *CaptainScenarioHandler
	router  *gin.Engine
	account *model.Account
}

func (s *CaptainScenarioHandlerTestSuite) SetupSuite() {
	s.db, _ = gorm.Open(sqlite.Open(":memory:"), &gorm.Config{})
	s.db.AutoMigrate(&model.Account{}, &model.CaptainAssistant{}, &model.CaptainScenario{})

	repo := repository.NewCaptainScenarioRepo(s.db)
	svc := service.NewCaptainScenarioService(repo)
	s.handler = NewCaptainScenarioHandler(svc)

	gin.SetMode(gin.TestMode)
	r := gin.New()
	// Handler Create/Update/Delete read :id (account) and :assistant_id
	// Handler Get reads :id (scenario ID, same key as account group — Gin conflict)
	// Handler List reads :assistant_id
	ag := r.Group("/api/v1/accounts/:id")
	assistants := ag.Group("/captain_assistants/:assistant_id")
	assistants.POST("/scenarios", s.handler.Create)
	assistants.GET("/scenarios", s.handler.List)
	assistants.PUT("/scenarios/:id", s.handler.Update)
	assistants.DELETE("/scenarios/:id", s.handler.Delete)
	// Separate route for Get since it reads c.Param("id") as scenario ID
	r.GET("/api/v1/captain/scenarios/:id", s.handler.Get)
	s.router = r

	s.account = &model.Account{Name: "TestAccount"}
	s.db.Create(s.account)
}

func (s *CaptainScenarioHandlerTestSuite) SetupTest() {
	s.db.Exec("DELETE FROM captain_scenarios")
}

func TestCaptainScenarioHandlerTestSuite(t *testing.T) {
	suite.Run(t, new(CaptainScenarioHandlerTestSuite))
}

func (s *CaptainScenarioHandlerTestSuite) TestCreate_InvalidAccountID() {
	w := httptest.NewRecorder()
	body := bytes.NewBufferString(`{"name":"scenario1","description":"desc"}`)
	req := httptest.NewRequest(http.MethodPost, "/api/v1/accounts/abc/captain_assistants/1/scenarios", body)
	req.Header.Set("Content-Type", "application/json")
	s.router.ServeHTTP(w, req)
	s.Equal(http.StatusBadRequest, w.Code)
}

func (s *CaptainScenarioHandlerTestSuite) TestCreate_InvalidAssistantID() {
	w := httptest.NewRecorder()
	body := bytes.NewBufferString(`{"name":"scenario1","description":"desc"}`)
	req := httptest.NewRequest(http.MethodPost, fmt.Sprintf("/api/v1/accounts/%d/captain_assistants/abc/scenarios", s.account.ID), body)
	req.Header.Set("Content-Type", "application/json")
	s.router.ServeHTTP(w, req)
	s.Equal(http.StatusBadRequest, w.Code)
}

func (s *CaptainScenarioHandlerTestSuite) TestGet_InvalidID() {
	// Get reads c.Param("id") as scenario ID from separate route
	w := httptest.NewRecorder()
	req := httptest.NewRequest(http.MethodGet, "/api/v1/captain/scenarios/abc", nil)
	s.router.ServeHTTP(w, req)
	s.Equal(http.StatusBadRequest, w.Code)
}

func (s *CaptainScenarioHandlerTestSuite) TestList_InvalidAssistantID() {
	// List reads c.Param("assistant_id") — not account_id
	w := httptest.NewRecorder()
	req := httptest.NewRequest(http.MethodGet, fmt.Sprintf("/api/v1/accounts/%d/captain_assistants/abc/scenarios", s.account.ID), nil)
	s.router.ServeHTTP(w, req)
	s.Equal(http.StatusBadRequest, w.Code)
}

func (s *CaptainScenarioHandlerTestSuite) TestUpdate_InvalidAccountID() {
	w := httptest.NewRecorder()
	body := bytes.NewBufferString(`{"name":"updated"}`)
	req := httptest.NewRequest(http.MethodPut, "/api/v1/accounts/abc/captain_assistants/1/scenarios/1", body)
	req.Header.Set("Content-Type", "application/json")
	s.router.ServeHTTP(w, req)
	s.Equal(http.StatusBadRequest, w.Code)
}

func (s *CaptainScenarioHandlerTestSuite) TestDelete_InvalidAccountID() {
	w := httptest.NewRecorder()
	req := httptest.NewRequest(http.MethodDelete, "/api/v1/accounts/abc/captain_assistants/1/scenarios/1", nil)
	s.router.ServeHTTP(w, req)
	s.Equal(http.StatusBadRequest, w.Code)
}