package server

import (
	"encoding/json"
	"log/slog"
	"net/http"
)

type ErrorResponse struct {
	Error   string `json:"error"`
	Details string `json:"details,omitempty"`
}

func WriteError(w http.ResponseWriter, error, details string, statusCode int) {
	w.Header().Set("Content-Type", "application/json")
	w.WriteHeader(statusCode)
	json.NewEncoder(w).Encode(ErrorResponse{
		Error:   error,
		Details: details,
	})
}

// RFC-7807 (Problem Details)
type ProblemDetails struct {
	Type     string `json:"type" example:"https://api.triggerssmith.com/errors/role-not-found"`
	Title    string `json:"title" example:"Role not found"`
	Status   int    `json:"status" example:"404"`
	Detail   string `json:"detail" example:"No role with ID 42"`
	Instance string `json:"instance" example:"/api/acl/roles/42"`
}

var typeDomain = "https://api.triggerssmith.com"

func WriteProblem(w http.ResponseWriter, status int, typ, title, detail string, r *http.Request) {
	w.Header().Set("Content-Type", "application/problem+json")
	w.WriteHeader(status)
	prob := ProblemDetails{
		Type:     typeDomain + typ,
		Title:    title,
		Status:   status,
		Detail:   detail,
		Instance: r.URL.Path,
	}
	slog.Warn("new problem", "type", typ, "title", title, "detail", detail, "instance", r.URL.Path, "status", status)
	_ = json.NewEncoder(w).Encode(prob)
}