package handler

import (
	"net/http"

	"github.com/dnoulet/go-first/internal/model"
	"github.com/dnoulet/go-first/internal/service"
	"github.com/gin-gonic/gin"
	"github.com/google/uuid"
	"github.com/rs/zerolog/log"
)

type Handler struct {
	skillService      *service.SkillService
	projectService    *service.ProjectService
	experienceService *service.ExperienceService
	serviceService    *service.ServiceService
	contactService    *service.ContactService
}

func NewHandler(
	skillService *service.SkillService,
	projectService *service.ProjectService,
	experienceService *service.ExperienceService,
	serviceService *service.ServiceService,
	contactService *service.ContactService,
) *Handler {
	return &Handler{
		skillService:      skillService,
		projectService:    projectService,
		experienceService: experienceService,
		serviceService:    serviceService,
		contactService:    contactService,
	}
}

func (h *Handler) RegisterRoutes(r *gin.Engine) {
	api := r.Group("/api/v1")
	{
		api.GET("/health", h.HealthCheck)
		api.GET("/skills", h.GetSkills)
		api.GET("/skills/:id", h.GetSkill)
		api.GET("/projects", h.GetProjects)
		api.GET("/projects/featured", h.GetFeaturedProjects)
		api.GET("/projects/:id", h.GetProject)
		api.GET("/experience", h.GetExperience)
		api.GET("/services", h.GetServices)
		api.POST("/contact", h.SubmitContact)
	}
}

func (h *Handler) HealthCheck(c *gin.Context) {
	c.JSON(http.StatusOK, model.SuccessResponse(gin.H{
		"status":  "ok",
		"service": "go-first",
		"version": "1.0.0",
	}))
}

func (h *Handler) GetSkills(c *gin.Context) {
	category := c.Query("category")
	skills, err := h.skillService.GetAll(c.Request.Context(), category)
	if err != nil {
		log.Error().Err(err).Msg("Failed to get skills")
		c.JSON(http.StatusInternalServerError, model.ErrorResponse("INTERNAL_ERROR", "Failed to retrieve skills", err.Error()))
		return
	}
	c.JSON(http.StatusOK, model.SuccessResponse(skills))
}

func (h *Handler) GetSkill(c *gin.Context) {
	idStr := c.Param("id")
	id, err := uuid.Parse(idStr)
	if err != nil {
		c.JSON(http.StatusBadRequest, model.ErrorResponse("INVALID_ID", "Invalid skill ID", err.Error()))
		return
	}

	skill, err := h.skillService.GetByID(c.Request.Context(), id)
	if err != nil {
		log.Error().Err(err).Str("id", idStr).Msg("Failed to get skill")
		c.JSON(http.StatusNotFound, model.ErrorResponse("NOT_FOUND", "Skill not found", err.Error()))
		return
	}
	c.JSON(http.StatusOK, model.SuccessResponse(skill))
}

func (h *Handler) GetProjects(c *gin.Context) {
	category := c.Query("category")
	featured := c.Query("featured") == "true"
	projects, err := h.projectService.GetAll(c.Request.Context(), category, featured)
	if err != nil {
		log.Error().Err(err).Msg("Failed to get projects")
		c.JSON(http.StatusInternalServerError, model.ErrorResponse("INTERNAL_ERROR", "Failed to retrieve projects", err.Error()))
		return
	}
	c.JSON(http.StatusOK, model.SuccessResponse(projects))
}

func (h *Handler) GetFeaturedProjects(c *gin.Context) {
	projects, err := h.projectService.GetFeatured(c.Request.Context())
	if err != nil {
		log.Error().Err(err).Msg("Failed to get featured projects")
		c.JSON(http.StatusInternalServerError, model.ErrorResponse("INTERNAL_ERROR", "Failed to retrieve featured projects", err.Error()))
		return
	}
	c.JSON(http.StatusOK, model.SuccessResponse(projects))
}

func (h *Handler) GetProject(c *gin.Context) {
	idStr := c.Param("id")
	id, err := uuid.Parse(idStr)
	if err != nil {
		c.JSON(http.StatusBadRequest, model.ErrorResponse("INVALID_ID", "Invalid project ID", err.Error()))
		return
	}

	project, err := h.projectService.GetByID(c.Request.Context(), id)
	if err != nil {
		log.Error().Err(err).Str("id", idStr).Msg("Failed to get project")
		c.JSON(http.StatusNotFound, model.ErrorResponse("NOT_FOUND", "Project not found", err.Error()))
		return
	}
	c.JSON(http.StatusOK, model.SuccessResponse(project))
}

func (h *Handler) GetExperience(c *gin.Context) {
	experience, err := h.experienceService.GetAll(c.Request.Context())
	if err != nil {
		log.Error().Err(err).Msg("Failed to get experience")
		c.JSON(http.StatusInternalServerError, model.ErrorResponse("INTERNAL_ERROR", "Failed to retrieve experience", err.Error()))
		return
	}
	c.JSON(http.StatusOK, model.SuccessResponse(experience))
}

func (h *Handler) GetServices(c *gin.Context) {
	services, err := h.serviceService.GetAll(c.Request.Context())
	if err != nil {
		log.Error().Err(err).Msg("Failed to get services")
		c.JSON(http.StatusInternalServerError, model.ErrorResponse("INTERNAL_ERROR", "Failed to retrieve services", err.Error()))
		return
	}
	c.JSON(http.StatusOK, model.SuccessResponse(services))
}

func (h *Handler) SubmitContact(c *gin.Context) {
	var req model.ContactForm
	if err := c.ShouldBindJSON(&req); err != nil {
		c.JSON(http.StatusBadRequest, model.ErrorResponse("VALIDATION_ERROR", "Invalid request body", err.Error()))
		return
	}

	submission, err := h.contactService.Create(c.Request.Context(), &req)
	if err != nil {
		log.Error().Err(err).Msg("Failed to create contact submission")
		c.JSON(http.StatusInternalServerError, model.ErrorResponse("INTERNAL_ERROR", "Failed to submit contact form", err.Error()))
		return
	}

	c.JSON(http.StatusCreated, model.SuccessResponse(submission))
}