package httpserver

import (
	"io/fs"
	"mime"
	"net/http"
	"path"
	"strings"

	"git.iwork-ai.com/xdc/iqudo-top1/internal/auth"
	"git.iwork-ai.com/xdc/iqudo-top1/internal/dashboard"
	"git.iwork-ai.com/xdc/iqudo-top1/internal/knowledge"
	"git.iwork-ai.com/xdc/iqudo-top1/internal/middleware"
	runhandler "git.iwork-ai.com/xdc/iqudo-top1/internal/run"
	"git.iwork-ai.com/xdc/iqudo-top1/internal/scenario"
	"git.iwork-ai.com/xdc/iqudo-top1/internal/sop"
	"github.com/gin-gonic/gin"
	"go.uber.org/zap"
	"gorm.io/gorm"
)

func New(db *gorm.DB, authService *auth.Service, frontend fs.FS, log *zap.Logger, environment string) http.Handler {
	if environment == "prod" {
		gin.SetMode(gin.ReleaseMode)
	}
	router := gin.New()
	router.Use(middleware.RequestLogger(log.Named("http")), middleware.Recovery(log.Named("recovery")))

	authHandler := auth.NewHandler(authService)
	scenarioHandler := scenario.NewHandler(db)
	sopHandler := sop.NewHandler(db)
	runHandler := runhandler.NewHandler(db)
	knowledgeHandler := knowledge.NewHandler(db)
	dashboardHandler := dashboard.NewHandler(db)

	api := router.Group("/api/v1")
	api.GET("/health", func(c *gin.Context) {
		c.JSON(http.StatusOK, gin.H{"status": "ok"})
	})
	api.POST("/auth/login", authHandler.Login)
	api.POST("/auth/refresh", authHandler.Refresh)

	protected := api.Group("")
	protected.Use(middleware.Authenticate(authService))
	protected.GET("/auth/me", authHandler.Me)
	protected.GET("/dashboard/summary", dashboardHandler.Summary)

	protected.GET("/scenarios", scenarioHandler.List)
	protected.POST("/scenarios", scenarioHandler.Create)
	protected.GET("/scenarios/:id", scenarioHandler.Get)
	protected.PUT("/scenarios/:id", scenarioHandler.Update)
	protected.DELETE("/scenarios/:id", scenarioHandler.Archive)
	protected.POST("/scenarios/:id/fields", scenarioHandler.CreateField)
	protected.PUT("/scenario-fields/:fieldId", scenarioHandler.UpdateField)
	protected.DELETE("/scenario-fields/:fieldId", scenarioHandler.DeleteField)

	protected.GET("/sops", sopHandler.List)
	protected.GET("/scenarios/:id/sops", sopHandler.List)
	protected.POST("/scenarios/:id/sops", sopHandler.Create)
	protected.GET("/sops/:id", sopHandler.Get)
	protected.PUT("/sops/:id/draft", sopHandler.SaveGraph)
	protected.POST("/sops/:id/validate", sopHandler.Validate)
	protected.POST("/sops/:id/submit-review", sopHandler.SubmitReview)
	protected.POST("/sops/:id/publish", sopHandler.Publish)
	protected.POST("/sops/:id/offline", sopHandler.Offline)
	protected.POST("/sops/:id/versions", sopHandler.CreateVersion)

	protected.GET("/published-sops", runHandler.PublishedSOPs)
	protected.GET("/runs", runHandler.List)
	protected.POST("/runs", runHandler.Start)
	protected.GET("/runs/:id", runHandler.Get)
	protected.POST("/runs/:id/answer", runHandler.Answer)
	protected.POST("/runs/:id/finish", runHandler.Finish)
	protected.POST("/runs/:id/feedback", runHandler.Feedback)

	protected.GET("/knowledge-cards", knowledgeHandler.List)
	protected.POST("/knowledge-cards", knowledgeHandler.Create)
	protected.DELETE("/knowledge-cards/:id", knowledgeHandler.Delete)

	router.NoRoute(spaHandler(frontend))
	return router
}

func spaHandler(frontend fs.FS) gin.HandlerFunc {
	return func(c *gin.Context) {
		if strings.HasPrefix(c.Request.URL.Path, "/api/") {
			c.JSON(http.StatusNotFound, gin.H{"code": "NOT_FOUND", "message": "接口不存在"})
			return
		}
		name := strings.TrimPrefix(path.Clean(c.Request.URL.Path), "/")
		if name == "" || name == "." {
			name = "index.html"
		}
		data, err := fs.ReadFile(frontend, name)
		if err != nil {
			name = "index.html"
			data, err = fs.ReadFile(frontend, name)
		}
		if err != nil {
			c.Status(http.StatusNotFound)
			return
		}
		contentType := mime.TypeByExtension(path.Ext(name))
		if contentType == "" {
			contentType = "application/octet-stream"
		}
		if name == "index.html" {
			c.Header("Cache-Control", "no-cache")
		} else {
			c.Header("Cache-Control", "public, max-age=31536000, immutable")
		}
		c.Data(http.StatusOK, contentType, data)
	}
}