package handler

import (
	"database/sql"
	"encoding/json"
	"errors"
	"fmt"
	"net/http"
	"strings"
)

// GetIncident responds to the link generated in the response to a New Snow
func (h *Handler) GetIncident(w http.ResponseWriter, r *http.Request) {
	h.Logger.Debug("GetIncident Request received", "method", r.Method, "url", r.URL, "path", r.URL.Path, "query", r.URL.Query())

	ctx := r.Context()

	path := r.URL.Path
	// Expected format: /api/now/table/incident/{id}
	parts := strings.Split(path, "/")
	h.Logger.Debug("Request path", "parts", parts)

	// Parse and write query parameters
	query := r.URL.Query()
	if len(query) == 0 {
		h.Logger.Debug("No query parameters.")
	} else {
		//fmt.Fprintln(w, "Query parameters:")
		for key, values := range query {
			for _, value := range values {
				h.Logger.Debug("Query Paramater", "key", key, "value", value)
			}
		}
	}

	if len(parts) == 6 && strings.HasPrefix(path, "/api/now/table/incident/") {

		// Handle the specific 'number' query parameter
		number := query.Get("number")
		if number != "" {
			h.Logger.Debug("GetIncident called for specific incident number", "number", number)

			// Query record from database and return that

		} else {
			// Requested a single incident
			id := parts[5] // Extract {id}
			h.Logger.Debug("GetIncident called for specific incident", "id", id)

			incResult, err := h.Database.Queries().GetIncident(ctx, nullStr(number))
			if err != nil {
				if errors.Is(err, sql.ErrNoRows) {
					h.Logger.Debug("No incident record found", "number", number)
				} else {
					h.Logger.Error("Unable to query database for incident number", "error", err)
					//return err
				}
			}

			b, err := json.Marshal(incResult)
			if err != nil {
				h.Logger.Error("Unable to convert database record into json", "error", err)
				w.Header().Set("Content-Type", "application/json")
				w.WriteHeader(http.StatusInternalServerError)
				json.NewEncoder(w).Encode(map[string]string{
					"status":  "ERROR",
					"message": fmt.Sprintf("Unable to convert database record into json: '%s'", err),
				})
				return
			}
			w.Header().Set("Content-Type", "application/json")
			w.WriteHeader(http.StatusOK)
			fmt.Fprintf(w, string(b))
			return
		}

	} else if strings.HasPrefix(path, "/api/now/table/incident") {
		h.Logger.Debug("GetIncident called for list of incidents")
		w.Header().Set("Content-Type", "application/json")
		w.WriteHeader(http.StatusOK)
		fmt.Fprintf(w, "{\"result\": [{}]}")

	}

	// TODO - provide an incident list if necessary

}