package platform

import (
	"errors"

	"github.com/gin-gonic/gin"
	"github.com/google/uuid"

	"base/internal/domain/profile"
	"base/internal/dto"
	"base/internal/server/middleware"
)

// GetSpecialistOverview returns overview for specialist users with full asset details, profile, and skills.
// @Summary get specialist overview
// @Description get overview for specialist view with assets, profile, skills, recently joined, analytics
// @Tags Platform
// @Produce json
// @Security BearerAuth
// @Success 200 {object} dto.SpecialistOverviewFetchedResponse
// @Failure 401 {object} dto.ErrorResponse
// @Failure 404 {object} dto.ErrorResponse "profile not found"
// @Failure 500 {object} dto.ErrorResponse "internal server error"
// @Router /api/v1/platform/overview/specialist [get]
func (ctl *Controller) GetSpecialistOverview(c *gin.Context) {
	lg := ctl.logger.With().
		Str("module", "platform").
		Str("router", "overview").
		Str("handler", "Overview").
		Logger()

	userIDVal, exists := c.Get(middleware.UserIDKey)
	if !exists {
		r := dto.Unauthorized()
		c.JSON(r.Status, r)
		return
	}

	userIDStr, ok := userIDVal.(string)
	if !ok {
		r := dto.Unauthorized()
		c.JSON(r.Status, r)
		return
	}

	userID, err := uuid.Parse(userIDStr)
	if err != nil {
		r := dto.BadRequest().WithMessage("invalid user ID")
		c.JSON(r.Status, r)
		return
	}

	resp, err := ctl.specialistService.Overview(c.Request.Context(), userID)
	if err != nil {
		lg.Error().Err(err).Msg("failed to fetch overview")
		switch {
		case errors.Is(err, profile.ErrProfileNotFound):
			r := dto.NotFound().WithMessage("profile not found")
			c.JSON(r.Status, r)
		default:
			r := dto.InternalServerError()
			c.JSON(r.Status, r)
		}
		return
	}

	r := dto.OK().WithData(resp)
	c.JSON(r.Status, r)
}

// GetDiscoveryOverview returns overview for non-specialist users discovering assets and specialists.
// No profile required - callers browse latest assets and profiles.
// @Summary get discovery overview
// @Description overview for browsing users (latest assets, recently joined profiles, analytics). No profile required.
// @Tags Platform
// @Accept json
// @Produce json
// @Security BearerAuth
// @Success 200 {object} dto.OverviewFetchedResponse "overview response"
// @Failure 401 {object} dto.ErrorResponse "unauthorized"
// @Failure 500 {object} dto.ErrorResponse "internal server error"
// @Router /api/v1/platform/overview/discovery [get]
func (ctl *Controller) GetDiscoveryOverview(c *gin.Context) {
	lg := ctl.logger.With().
		Str("module", "platform").
		Str("router", "overview").
		Str("handler", "GetDiscoveryOverview").
		Logger()

	if _, exists := c.Get(middleware.UserIDKey); !exists {
		r := dto.Unauthorized()
		c.JSON(r.Status, r)
		return
	}

	overview, err := ctl.discoveryService.GetDiscoveryOverview(c.Request.Context())
	if err != nil {
		lg.Error().Err(err).Msg("failed to get discovery overview")
		r := dto.InternalServerError()
		c.JSON(r.Status, r)
		return
	}

	r := dto.OK().WithData(overview)
	c.JSON(r.Status, r)
}