package main

import (
	"fmt"
	"net/http"
	"strconv"
	"time"

	"git.runcible.io/learning/pulley/internal/data"
	"github.com/julienschmidt/httprouter"
)

func (app *application) createMovieHandler(w http.ResponseWriter, r *http.Request) {
	// Declare an anonymous struct to hold the information that we expect to be in the
	// HTTP request body (note that the field names and types in the struct are a subset
	// of the Movie struct that we created earlier). This struct will be our *target
	// decode destination*.

	// just like encoding the field names need to be exported to have Decode set them
	var input struct {
		Title string `json:"title"`
		Year  int32  `json:"year"`
		// implemented an Unmarshaler receiver for this
		// Runtime int32    `json:"runtime"`
		Runtime data.Runtime `json:"runtime"`
		Genres  []string     `json:"genres"`
	}

	// reads from the request body and decodes to our input struct
	// must be a non-nil pointer. Otherwise will raise json.InvalidUnmarshalError
	err := app.readJSON(w, r, &input)
	if err != nil {
		app.badRequestResponse(w, r, err)
		return
	}

	// TODO save to DB

	// Dump the contents of the input struct in a HTTP response
	// +v is the default format value plus field names for structs
	w.WriteHeader(http.StatusCreated)
	fmt.Fprintf(w, "%+v\n", input)

}

func (app *application) getMovieHandler(w http.ResponseWriter, r *http.Request) {
	// When httprouter is parsing a request, any interpolated URL parameters will be
	// stored in the request context. We can use the ParamsFromContext() function to
	// retrieve a slice containing these parameter names and values.

	// TODO refactor id retrieval to an app.readIDParam receiver
	params := httprouter.ParamsFromContext(r.Context())

	id, err := strconv.ParseInt(params.ByName("id"), 10, 64)

	if err != nil || id < 1 {
		// http.NotFound(w, r)
		app.notFoundResponse(w, r)
		return
	}

	movie := data.Movie{
		ID:        id,
		CreatedAt: time.Now(),
		Title:     "Eisenhorn",
		// Runtime:   102,
		Genres:  []string{"sci-fi", "action"},
		Version: 1,
	}
	app.logger.Info("Hit the get movies and found", "movie", movie.Title)

	err = app.writeJSON(w, http.StatusOK, envelope{"movie": movie}, nil)
	if err != nil {
		//app.logger.Error(err.Error())
		//http.Error(w, "The server encountered a problem and could not process your request", http.StatusInternalServerError)
		app.serverErrorResponse(w, r, err)
	}
}

func (app *application) healthCheckHandler(w http.ResponseWriter, r *http.Request) {
	// JSON has to be double quoted. FYI you would never really do this
	// js := `{"status": "available", "environment": %q, "version": %q}`
	// js = fmt.Sprintf(js, app.config.env, Version)
	// w.Write([]byte(js))
	env := envelope{
		"status": "available",
		"system_info": map[string]string{
			"environment": app.config.env,
			"version":     Version,
		},
	}

	// js, err := json.Marshal(data)
	// if err != nil {
	// 	app.logger.Error(err.Error())
	// 	http.Error(w, "The server encountered a problem and could not process your request", http.StatusInternalServerError)
	// 	return
	// }
	// // Append a newline to the JSON. This is just a small nicety to make it easier to
	// // view in terminal applications.
	// js = append(js, '\n')
	// w.Header().Set("Content-Type", "application/json")
	// w.Write(js)
	err := app.writeJSON(w, 200, env, nil)
	if err != nil {
		//app.logger.Error(err.Error())
		//http.Error(w, "The server encountered a problem and could not process your request", http.StatusInternalServerError)
		app.serverErrorResponse(w, r, err)
		return
	}
}