package app

import (
	"net/http"
	"strconv"
	"strings"

	"archi_folio/internal/store"
)

func (s *Server) adminUpdateContent(w http.ResponseWriter, r *http.Request) {
	if err := parseAdminForm(w, r, maxFormBytes); err != nil {
		s.redirectAdmin(w, r, "main", "content form failed")
		return
	}
	current, err := s.store.SiteContent(r.Context())
	if err != nil {
		s.redirectAdmin(w, r, "main", "content could not be loaded")
		return
	}
	content := store.SiteContent{
		HeroTitle:         formValueOr(r, "hero_title", current.HeroTitle),
		HeroSubtitle:      formValueOr(r, "hero_subtitle", current.HeroSubtitle),
		Positioning:       formValueOr(r, "positioning", current.Positioning),
		HeroCTALabel:      formValueOr(r, "hero_cta_label", current.HeroCTALabel),
		HeroCTAURL:        formValueOr(r, "hero_cta_url", current.HeroCTAURL),
		SecondaryCTALabel: formValueOr(r, "secondary_cta_label", current.SecondaryCTALabel),
		SecondaryCTAURL:   formValueOr(r, "secondary_cta_url", current.SecondaryCTAURL),
		IntroTitle:        formValueOr(r, "intro_title", current.IntroTitle),
		IntroText:         formValueOr(r, "intro_text", current.IntroText),
		ServiceOneTitle:   formValueOr(r, "service_one_title", current.ServiceOneTitle),
		ServiceOneText:    formValueOr(r, "service_one_text", current.ServiceOneText),
		ServiceTwoTitle:   formValueOr(r, "service_two_title", current.ServiceTwoTitle),
		ServiceTwoText:    formValueOr(r, "service_two_text", current.ServiceTwoText),
		ServiceThreeTitle: formValueOr(r, "service_three_title", current.ServiceThreeTitle),
		ServiceThreeText:  formValueOr(r, "service_three_text", current.ServiceThreeText),
		ProcessOneTitle:   formValueOr(r, "process_one_title", current.ProcessOneTitle),
		ProcessOneText:    formValueOr(r, "process_one_text", current.ProcessOneText),
		ProcessTwoTitle:   formValueOr(r, "process_two_title", current.ProcessTwoTitle),
		ProcessTwoText:    formValueOr(r, "process_two_text", current.ProcessTwoText),
		ProcessThreeTitle: formValueOr(r, "process_three_title", current.ProcessThreeTitle),
		ProcessThreeText:  formValueOr(r, "process_three_text", current.ProcessThreeText),
		AboutName:         formValueOr(r, "about_name", current.AboutName),
		AboutRole:         formValueOr(r, "about_role", current.AboutRole),
		AboutBio:          formValueOr(r, "about_bio", current.AboutBio),
		StudioPhilosophy:  formValueOr(r, "studio_philosophy", current.StudioPhilosophy),
		StudioApproach:    formValueOr(r, "studio_approach", current.StudioApproach),
		StudioCredentials: formValueOr(r, "studio_credentials", current.StudioCredentials),
		ServiceArea:       formValueOr(r, "service_area", current.ServiceArea),
		Email:             current.Email,
		Phone:             current.Phone,
		Location:          current.Location,
		HeroImage:         formValueOr(r, "hero_image_current", current.HeroImage),
		AboutImage:        formValueOr(r, "about_image_current", current.AboutImage),
	}
	if err := validateContent(content); err != nil {
		s.redirectAdmin(w, r, "main", err.Error())
		return
	}
	if path, ok, err := s.saveUpload(r, "hero_image"); err != nil {
		s.redirectAdmin(w, r, "main", "hero image "+err.Error())
		return
	} else if ok {
		content.HeroImage = path
	}
	if path, ok, err := s.saveUpload(r, "about_image"); err != nil {
		s.redirectAdmin(w, r, "main", "about image "+err.Error())
		return
	} else if ok {
		content.AboutImage = path
	}
	if err := s.store.UpdateSiteContent(r.Context(), content); err != nil {
		s.redirectAdmin(w, r, "main", "content could not be saved")
		return
	}
	s.redirectAdmin(w, r, "main", "content saved")
}

func (s *Server) adminUpdateContactDetails(w http.ResponseWriter, r *http.Request) {
	if err := r.ParseForm(); err != nil {
		s.redirectAdmin(w, r, "contact-details", "contact details form failed")
		return
	}
	content, err := s.store.SiteContent(r.Context())
	if err != nil {
		s.redirectAdmin(w, r, "contact-details", "contact details could not be loaded")
		return
	}
	content.Email = strings.TrimSpace(r.FormValue("email"))
	content.Phone = strings.TrimSpace(r.FormValue("phone"))
	content.Location = strings.TrimSpace(r.FormValue("location"))
	if err := validateContactDetails(content); err != nil {
		s.redirectAdmin(w, r, "contact-details", err.Error())
		return
	}
	if err := s.store.UpdateSiteContent(r.Context(), content); err != nil {
		s.redirectAdmin(w, r, "contact-details", "contact details could not be saved")
		return
	}
	s.redirectAdmin(w, r, "contact-details", "contact details saved")
}

func (s *Server) adminCreateProject(w http.ResponseWriter, r *http.Request) {
	if err := parseAdminForm(w, r, maxFormBytes); err != nil {
		s.redirectAdmin(w, r, "projects", "project form failed")
		return
	}
	cover := "/static/placeholders/project-1.svg"
	if path, ok, err := s.saveUpload(r, "cover_image"); err != nil {
		s.redirectAdmin(w, r, "projects", "cover upload "+err.Error())
		return
	} else if ok {
		cover = path
	}
	slug := strings.TrimSpace(r.FormValue("slug"))
	if slug == "" {
		slug = store.SlugFromTitle(r.FormValue("title"))
	} else {
		slug = store.SlugFromTitle(slug)
	}
	project := store.Project{
		Slug:        slug,
		Title:       strings.TrimSpace(r.FormValue("title")),
		Location:    strings.TrimSpace(r.FormValue("location")),
		Year:        strings.TrimSpace(r.FormValue("year")),
		Category:    strings.TrimSpace(r.FormValue("category")),
		Summary:     strings.TrimSpace(r.FormValue("summary")),
		Scope:       strings.TrimSpace(r.FormValue("scope")),
		Status:      strings.TrimSpace(r.FormValue("status")),
		Position:    formInt(r, "position"),
		Description: strings.TrimSpace(r.FormValue("description")),
		CoverImage:  cover,
		Featured:    r.FormValue("featured") == "on",
	}
	if err := validateProject(project); err != nil {
		s.redirectAdmin(w, r, "projects", err.Error())
		return
	}
	id, err := s.store.CreateProject(r.Context(), project)
	if err != nil {
		s.redirectAdmin(w, r, "projects", "project could not be created")
		return
	}
	_ = s.store.AddProjectImage(r.Context(), id, cover, r.FormValue("title"))
	s.redirectAdmin(w, r, "projects", "project created")
}

func (s *Server) adminUpdateProject(w http.ResponseWriter, r *http.Request) {
	id, err := strconv.ParseInt(r.PathValue("id"), 10, 64)
	if err != nil {
		http.NotFound(w, r)
		return
	}
	if err := parseAdminForm(w, r, maxFormBytes); err != nil {
		s.redirectAdmin(w, r, "projects", "project form failed")
		return
	}
	cover := r.FormValue("cover_image_current")
	if path, ok, err := s.saveUpload(r, "cover_image"); err != nil {
		s.redirectAdmin(w, r, "projects", "cover upload "+err.Error())
		return
	} else if ok {
		cover = path
	}
	slug := strings.TrimSpace(r.FormValue("slug"))
	if slug == "" {
		slug = store.SlugFromTitle(r.FormValue("title"))
	} else {
		slug = store.SlugFromTitle(slug)
	}
	project := store.Project{
		ID:          id,
		Slug:        slug,
		Title:       strings.TrimSpace(r.FormValue("title")),
		Location:    strings.TrimSpace(r.FormValue("location")),
		Year:        strings.TrimSpace(r.FormValue("year")),
		Category:    strings.TrimSpace(r.FormValue("category")),
		Summary:     strings.TrimSpace(r.FormValue("summary")),
		Scope:       strings.TrimSpace(r.FormValue("scope")),
		Status:      strings.TrimSpace(r.FormValue("status")),
		Position:    formInt(r, "position"),
		Description: strings.TrimSpace(r.FormValue("description")),
		CoverImage:  cover,
		Featured:    r.FormValue("featured") == "on",
	}
	if err := validateProject(project); err != nil {
		s.redirectAdmin(w, r, "projects", err.Error())
		return
	}
	err = s.store.UpdateProject(r.Context(), project)
	if err != nil {
		s.redirectAdmin(w, r, "projects", "project could not be saved")
		return
	}
	s.redirectAdmin(w, r, "projects", "project saved")
}

func (s *Server) adminDeleteProject(w http.ResponseWriter, r *http.Request) {
	id, err := strconv.ParseInt(r.PathValue("id"), 10, 64)
	if err == nil {
		err = s.store.DeleteProject(r.Context(), id)
	}
	if err != nil {
		s.redirectAdmin(w, r, "projects", "project could not be deleted")
		return
	}
	s.redirectAdmin(w, r, "projects", "project deleted")
}

func (s *Server) adminAddProjectImage(w http.ResponseWriter, r *http.Request) {
	projectID, err := strconv.ParseInt(r.PathValue("id"), 10, 64)
	if err != nil {
		http.NotFound(w, r)
		return
	}
	if err := parseAdminForm(w, r, maxFormBytes); err != nil {
		s.redirectAdmin(w, r, "projects", "image form failed")
		return
	}
	path, ok, err := s.saveUpload(r, "image")
	if err != nil || !ok {
		if err != nil {
			s.redirectAdmin(w, r, "projects", "image upload "+err.Error())
			return
		}
		s.redirectAdmin(w, r, "projects", "image upload failed")
		return
	}
	if err := s.store.AddProjectImage(r.Context(), projectID, path, r.FormValue("caption")); err != nil {
		s.redirectAdmin(w, r, "projects", "image could not be added")
		return
	}
	s.redirectAdmin(w, r, "projects", "image added")
}

func (s *Server) adminDeleteProjectImage(w http.ResponseWriter, r *http.Request) {
	id, err := strconv.ParseInt(r.PathValue("id"), 10, 64)
	if err == nil {
		err = s.store.DeleteProjectImage(r.Context(), id)
	}
	if err != nil {
		s.redirectAdmin(w, r, "projects", "image could not be deleted")
		return
	}
	s.redirectAdmin(w, r, "projects", "image deleted")
}

func (s *Server) adminCreateService(w http.ResponseWriter, r *http.Request) {
	if err := r.ParseForm(); err != nil {
		s.redirectAdmin(w, r, "services", "service form failed")
		return
	}
	service := serviceFromForm(r, 0)
	if err := validateService(service); err != nil {
		s.redirectAdmin(w, r, "services", err.Error())
		return
	}
	if err := s.store.CreateService(r.Context(), service); err != nil {
		s.redirectAdmin(w, r, "services", "service could not be created")
		return
	}
	s.redirectAdmin(w, r, "services", "service created")
}

func (s *Server) adminUpdateService(w http.ResponseWriter, r *http.Request) {
	id, err := strconv.ParseInt(r.PathValue("id"), 10, 64)
	if err != nil {
		http.NotFound(w, r)
		return
	}
	if err := r.ParseForm(); err != nil {
		s.redirectAdmin(w, r, "services", "service form failed")
		return
	}
	service := serviceFromForm(r, id)
	if err := validateService(service); err != nil {
		s.redirectAdmin(w, r, "services", err.Error())
		return
	}
	if err := s.store.UpdateService(r.Context(), service); err != nil {
		s.redirectAdmin(w, r, "services", "service could not be saved")
		return
	}
	s.redirectAdmin(w, r, "services", "service saved")
}

func (s *Server) adminDeleteService(w http.ResponseWriter, r *http.Request) {
	id, err := strconv.ParseInt(r.PathValue("id"), 10, 64)
	if err == nil {
		err = s.store.DeleteService(r.Context(), id)
	}
	if err != nil {
		s.redirectAdmin(w, r, "services", "service could not be deleted")
		return
	}
	s.redirectAdmin(w, r, "services", "service deleted")
}

func (s *Server) adminCreateFAQ(w http.ResponseWriter, r *http.Request) {
	if err := r.ParseForm(); err != nil {
		s.redirectAdmin(w, r, "services", "FAQ form failed")
		return
	}
	faq := faqFromForm(r, 0)
	if err := validateFAQ(faq); err != nil {
		s.redirectAdmin(w, r, "services", err.Error())
		return
	}
	if err := s.store.CreateFAQ(r.Context(), faq); err != nil {
		s.redirectAdmin(w, r, "services", "FAQ could not be created")
		return
	}
	s.redirectAdmin(w, r, "services", "FAQ created")
}

func (s *Server) adminUpdateFAQ(w http.ResponseWriter, r *http.Request) {
	id, err := strconv.ParseInt(r.PathValue("id"), 10, 64)
	if err != nil {
		http.NotFound(w, r)
		return
	}
	if err := r.ParseForm(); err != nil {
		s.redirectAdmin(w, r, "services", "FAQ form failed")
		return
	}
	faq := faqFromForm(r, id)
	if err := validateFAQ(faq); err != nil {
		s.redirectAdmin(w, r, "services", err.Error())
		return
	}
	if err := s.store.UpdateFAQ(r.Context(), faq); err != nil {
		s.redirectAdmin(w, r, "services", "FAQ could not be saved")
		return
	}
	s.redirectAdmin(w, r, "services", "FAQ saved")
}

func (s *Server) adminDeleteFAQ(w http.ResponseWriter, r *http.Request) {
	id, err := strconv.ParseInt(r.PathValue("id"), 10, 64)
	if err == nil {
		err = s.store.DeleteFAQ(r.Context(), id)
	}
	if err != nil {
		s.redirectAdmin(w, r, "services", "FAQ could not be deleted")
		return
	}
	s.redirectAdmin(w, r, "services", "FAQ deleted")
}

func serviceFromForm(r *http.Request, id int64) store.Service {
	return store.Service{
		ID:       id,
		Title:    strings.TrimSpace(r.FormValue("title")),
		Summary:  strings.TrimSpace(r.FormValue("summary")),
		Details:  strings.TrimSpace(r.FormValue("details")),
		Position: formInt(r, "position"),
		Active:   r.FormValue("active") == "on",
	}
}

func faqFromForm(r *http.Request, id int64) store.FAQ {
	return store.FAQ{
		ID:       id,
		Question: strings.TrimSpace(r.FormValue("question")),
		Answer:   strings.TrimSpace(r.FormValue("answer")),
		Position: formInt(r, "position"),
		Active:   r.FormValue("active") == "on",
	}
}

func formInt(r *http.Request, name string) int {
	value, _ := strconv.Atoi(strings.TrimSpace(r.FormValue(name)))
	return value
}

func formValueOr(r *http.Request, name, fallback string) string {
	if _, ok := r.Form[name]; !ok {
		return fallback
	}
	return strings.TrimSpace(r.FormValue(name))
}