package server

import (
	"net/http"

	"github.com/go-chi/chi/v5"

	"git.unkin.net/unkin/tomswallapi/internal/model"
)

// mountLongtail wires the global-compiled long-tail resources: policies (default
// posture), blrules (blacklist/whitelist), and conntrack.
func (s *Server) mountLongtail(r chi.Router) {
	r.Route("/policies", func(r chi.Router) {
		r.Get("/", s.listPolicies)
		r.Post("/", s.createPolicy)
		r.Get("/{id}", s.getPolicy)
		r.Delete("/{id}", s.deletePolicy)
	})
	r.Route("/blrules", func(r chi.Router) {
		r.Get("/", s.listBlrules)
		r.Post("/", s.createBlrule)
		r.Get("/{id}", s.getBlrule)
		r.Delete("/{id}", s.deleteBlrule)
	})
	r.Route("/conntrack", func(r chi.Router) {
		r.Get("/", s.listConntrack)
		r.Post("/", s.createConntrack)
		r.Get("/{id}", s.getConntrack)
		r.Delete("/{id}", s.deleteConntrack)
	})
}

// ---- Policies --------------------------------------------------------------

func (s *Server) listPolicies(w http.ResponseWriter, r *http.Request) {
	list, err := s.store.ListPolicies(r.Context())
	respondList(w, list, err)
}

func (s *Server) createPolicy(w http.ResponseWriter, r *http.Request) {
	var v model.Policy
	if !decode(w, r, &v) {
		return
	}
	if v.Action == "" {
		writeError(w, http.StatusBadRequest, "action is required")
		return
	}
	id, err := s.store.CreatePolicy(r.Context(), v)
	if err != nil {
		writeError(w, http.StatusInternalServerError, err.Error())
		return
	}
	v.ID = id
	writeJSON(w, http.StatusCreated, v)
}

func (s *Server) getPolicy(w http.ResponseWriter, r *http.Request) {
	id, ok := idParam(w, r)
	if !ok {
		return
	}
	v, err := s.store.GetPolicy(r.Context(), id)
	respondOne(w, v, err)
}

func (s *Server) deletePolicy(w http.ResponseWriter, r *http.Request) {
	id, ok := idParam(w, r)
	if !ok {
		return
	}
	respondDelete(w, s.store.DeletePolicy(r.Context(), id))
}

// ---- Blrules ---------------------------------------------------------------

func (s *Server) listBlrules(w http.ResponseWriter, r *http.Request) {
	list, err := s.store.ListBlrules(r.Context())
	respondList(w, list, err)
}

func (s *Server) createBlrule(w http.ResponseWriter, r *http.Request) {
	var v model.BlruleRule
	if !decode(w, r, &v) {
		return
	}
	if v.Action == "" {
		writeError(w, http.StatusBadRequest, "action is required")
		return
	}
	id, err := s.store.CreateBlrule(r.Context(), v)
	if err != nil {
		writeError(w, http.StatusInternalServerError, err.Error())
		return
	}
	v.ID = id
	writeJSON(w, http.StatusCreated, v)
}

func (s *Server) getBlrule(w http.ResponseWriter, r *http.Request) {
	id, ok := idParam(w, r)
	if !ok {
		return
	}
	v, err := s.store.GetBlrule(r.Context(), id)
	respondOne(w, v, err)
}

func (s *Server) deleteBlrule(w http.ResponseWriter, r *http.Request) {
	id, ok := idParam(w, r)
	if !ok {
		return
	}
	respondDelete(w, s.store.DeleteBlrule(r.Context(), id))
}

// ---- Conntrack -------------------------------------------------------------

func (s *Server) listConntrack(w http.ResponseWriter, r *http.Request) {
	list, err := s.store.ListConntrack(r.Context())
	respondList(w, list, err)
}

func (s *Server) createConntrack(w http.ResponseWriter, r *http.Request) {
	var v model.ConntrackRule
	if !decode(w, r, &v) {
		return
	}
	if v.Action == "" {
		writeError(w, http.StatusBadRequest, "action is required")
		return
	}
	id, err := s.store.CreateConntrack(r.Context(), v)
	if err != nil {
		writeError(w, http.StatusInternalServerError, err.Error())
		return
	}
	v.ID = id
	writeJSON(w, http.StatusCreated, v)
}

func (s *Server) getConntrack(w http.ResponseWriter, r *http.Request) {
	id, ok := idParam(w, r)
	if !ok {
		return
	}
	v, err := s.store.GetConntrack(r.Context(), id)
	respondOne(w, v, err)
}

func (s *Server) deleteConntrack(w http.ResponseWriter, r *http.Request) {
	id, ok := idParam(w, r)
	if !ok {
		return
	}
	respondDelete(w, s.store.DeleteConntrack(r.Context(), id))
}