package profile

import (
	"context"
	"github.com/google/uuid"
	"github.com/rs/zerolog"
	"github.com/samber/lo"
	"go.uber.org/fx"

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

type Service interface {
	Create(ctx context.Context, req dto.CreateProfileRequest) (*dto.ProfileResponse, error)
	Update(ctx context.Context, req dto.UpdateProfileRequest) (*dto.ProfileResponse, error)
	GetByID(ctx context.Context, id uuid.UUID) (*dto.ProfileResponse, error)
	GetByHandle(ctx context.Context, handle string) (*dto.ProfileResponse, error)
	List(ctx context.Context, req dto.ListProfilesRequest) (*dto.ListProfilesResponse, error)
	Delete(ctx context.Context, id uuid.UUID) error
}

type service struct {
	logger      zerolog.Logger
	profileRepo profile.Repository
}

type Param struct {
	Logger      zerolog.Logger
	ProfileRepo profile.Repository

	fx.In
}

func New(param Param) Service {
	return &service{
		logger:      param.Logger,
		profileRepo: param.ProfileRepo,
	}
}

func (s *service) Create(ctx context.Context, req dto.CreateProfileRequest) (*dto.ProfileResponse, error) {
	domainProfile := &profile.Profile{
		ID:               uuid.New(),
		Handle:           req.Handle,
		PageSectionOrder: req.PageSectionOrder,
		Hero: profile.Hero{
			Role: &profile.Role{
				ID:    lo.FromPtr(req.Hero.RoleID),
				Level: req.Hero.RoleLevel,
			},
			FirstName:        req.Hero.FirstName,
			LastName:         req.Hero.LastName,
			Company:          req.Hero.Company,
			ShortDescription: req.Hero.ShortDescription,
			ResumeLink:       req.Hero.ResumeLink,
			CTAEnabled:       req.Hero.CTAEnabled,
			Avatar:           req.Hero.Avatar,
		},
		About: profile.About{
			ProfilePicture: req.About.ProfilePicture,
			About:          req.About.About,
		},
		Contact: profile.Contact{
			Email: req.Contact.Email,
			Phone: req.Contact.Phone,
		},
		PageSetting: profile.PageSetting{
			VisibilityLevel: req.PageSetting.VisibilityLevel,
		},
	}

	if req.Hero.RoleID != nil {
		domainProfile.Hero.Role = &profile.Role{
			ID: *req.Hero.RoleID,
		}
	}

	for _, skill := range req.Skills {
		domainProfile.Skills = append(domainProfile.Skills, profile.Skill{
			SkillName: skill.SkillName,
			Level:     skill.Level,
		})
	}

	for _, achievement := range req.About.Achievements {
		domainProfile.About.Achievements = append(domainProfile.About.Achievements, profile.Achievement{
			Title:   achievement.Title,
			Value:   achievement.Value,
			Enabled: achievement.Enabled,
		})
	}

	for _, socialLink := range req.Contact.SocialLinks {
		domainProfile.Contact.SocialLinks = append(domainProfile.Contact.SocialLinks, profile.SocialLink{
			LinkType: socialLink.LinkType,
			Link:     socialLink.Link,
		})
	}

	if err := s.profileRepo.Create(ctx, domainProfile); err != nil {
		return nil, err
	}

	return s.toProfileResponse(domainProfile), nil
}

func (s *service) Update(ctx context.Context, req dto.UpdateProfileRequest) (*dto.ProfileResponse, error) {
	id, err := uuid.Parse(req.ID)
	if err != nil {
		return nil, profile.ErrProfileNotFound
	}

	// First, get the existing profile to ensure it exists
	existingProfile, err := s.profileRepo.FindByID(ctx, id)
	if err != nil {
		return nil, profile.ErrProfileNotFound
	}

	domainProfile := &profile.Profile{
		ID:               id,
		Handle:           req.Handle,
		PageSectionOrder: req.PageSectionOrder,
		Hero: profile.Hero{
			FirstName: req.Hero.FirstName,
			Role: &profile.Role{
				ID:    lo.FromPtr(req.Hero.RoleID),
				Level: req.Hero.RoleLevel,
			},
			LastName:         req.Hero.LastName,
			Company:          req.Hero.Company,
			ShortDescription: req.Hero.ShortDescription,
			ResumeLink:       req.Hero.ResumeLink,
			CTAEnabled:       req.Hero.CTAEnabled,
			Avatar:           req.Hero.Avatar,
		},
		About: profile.About{
			ProfilePicture: req.About.ProfilePicture,
			About:          req.About.About,
		},
		Contact: profile.Contact{
			Email: req.Contact.Email,
			Phone: req.Contact.Phone,
		},
		PageSetting: profile.PageSetting{
			VisibilityLevel: req.PageSetting.VisibilityLevel,
		},
	}

	if req.Hero.RoleID != nil {
		domainProfile.Hero.Role = &profile.Role{
			ID: *req.Hero.RoleID,
		}
	} else if existingProfile != nil && existingProfile.Hero.Role != nil {
		domainProfile.Hero.Role = existingProfile.Hero.Role
	}

	if req.Hero.RoleLevel == "" && existingProfile != nil {
		domainProfile.Hero.Role.Level = existingProfile.Hero.Role.Level
	}

	for _, skill := range req.Skills {
		domainProfile.Skills = append(domainProfile.Skills, profile.Skill{
			SkillName: skill.SkillName,
			Level:     skill.Level,
		})
	}

	for _, achievement := range req.About.Achievements {
		domainProfile.About.Achievements = append(domainProfile.About.Achievements, profile.Achievement{
			Title:   achievement.Title,
			Value:   achievement.Value,
			Enabled: achievement.Enabled,
		})
	}

	for _, socialLink := range req.Contact.SocialLinks {
		domainProfile.Contact.SocialLinks = append(domainProfile.Contact.SocialLinks, profile.SocialLink{
			LinkType: socialLink.LinkType,
			Link:     socialLink.Link,
		})
	}

	if err := s.profileRepo.Update(ctx, domainProfile); err != nil {
		return nil, err
	}

	return s.toProfileResponse(domainProfile), nil
}

func (s *service) GetByID(ctx context.Context, id uuid.UUID) (*dto.ProfileResponse, error) {
	profileData, err := s.profileRepo.FindByID(ctx, id)
	if err != nil {
		return nil, profile.ErrProfileNotFound
	}

	return s.toProfileResponse(profileData), nil
}

func (s *service) GetByHandle(ctx context.Context, handle string) (*dto.ProfileResponse, error) {
	profileData, err := s.profileRepo.FindByHandle(ctx, handle)
	if err != nil {
		return nil, profile.ErrProfileNotFound
	}

	return s.toProfileResponse(profileData), nil
}

func (s *service) List(ctx context.Context, req dto.ListProfilesRequest) (*dto.ListProfilesResponse, error) {
	filter := profile.Filter{
		FirstName: req.FirstName,
		LastName:  req.LastName,
		Company:   req.Company,
		SkillName: req.SkillName,
		Page:      req.Page,
		PageSize:  req.PageSize,
		SortedBy:  req.SortedBy,
		Ascending: req.Ascending,
	}

	if req.Page == 0 {
		filter.Page = 1
	}
	if req.PageSize == 0 {
		filter.PageSize = 10
	}

	if req.RoleID != nil {
		filter.RoleID = *req.RoleID
	}

	profiles, total, err := s.profileRepo.FindAll(ctx, filter)
	if err != nil {
		return nil, err
	}

	response := &dto.ListProfilesResponse{
		Profiles: make([]dto.ProfileResponse, len(profiles)),
		Total:    total,
		Page:     filter.Page,
		PageSize: filter.PageSize,
	}

	for i, p := range profiles {
		response.Profiles[i] = *s.toProfileResponse(p)
	}

	return response, nil
}

func (s *service) Delete(ctx context.Context, id uuid.UUID) error {
	// Get profile first to ensure it exists
	profileData, err := s.profileRepo.FindByID(ctx, id)
	if err != nil {
		return profile.ErrProfileNotFound
	}

	return s.profileRepo.Delete(ctx, profileData)
}

func (s *service) toProfileResponse(p *profile.Profile) *dto.ProfileResponse {
	resp := &dto.ProfileResponse{
		ID:               p.ID,
		Handle:           p.Handle,
		PageSectionOrder: p.PageSectionOrder,
		Hero: dto.HeroDTO{
			FirstName:        p.Hero.FirstName,
			LastName:         p.Hero.LastName,
			Company:          p.Hero.Company,
			ShortDescription: p.Hero.ShortDescription,
			ResumeLink:       p.Hero.ResumeLink,
			CTAEnabled:       p.Hero.CTAEnabled,
			Avatar:           p.Hero.Avatar,
		},
		About: dto.AboutDTO{
			ProfilePicture: p.About.ProfilePicture,
			About:          p.About.About,
		},
		Contact: dto.ContactDTO{
			Email: p.Contact.Email,
			Phone: p.Contact.Phone,
		},
		PageSetting: dto.PageSettingDTO{
			VisibilityLevel: p.PageSetting.VisibilityLevel,
		},
	}

	if p.Hero.Role != nil {
		resp.Hero.RoleID = &p.Hero.Role.ID
	}

	for _, skill := range p.Skills {
		resp.Skills = append(resp.Skills, dto.SkillDTO{
			SkillName: skill.SkillName,
			Level:     skill.Level,
		})
	}

	for _, achievement := range p.About.Achievements {
		resp.About.Achievements = append(resp.About.Achievements, dto.AchievementDTO{
			Title:   achievement.Title,
			Value:   achievement.Value,
			Enabled: achievement.Enabled,
		})
	}

	for _, socialLink := range p.Contact.SocialLinks {
		resp.Contact.SocialLinks = append(resp.Contact.SocialLinks, dto.SocialLinkDTO{
			LinkType: socialLink.LinkType,
			Link:     socialLink.Link,
		})
	}

	return resp
}