package server

import (
	"bytes"
	"encoding/json"
	"fmt"
	"net/http"
	"os"
	"strconv"
	"time"

	"github.com/a-h/templ"
	"github.com/labstack/echo/v4"
	"github.com/labstack/gommon/log"
	u "github.com/rjNemo/underscore"

	"github.com/rjNemo/rentease/constants"
	"github.com/rjNemo/rentease/internal/domains/booking"
	"github.com/rjNemo/rentease/internal/views"
	myTime "github.com/rjNemo/rentease/pkg/time"
)

func (s Server) handleHomePage() echo.HandlerFunc {
	return func(ctx echo.Context) error {
		component := views.Index()
		return s.renderTempl(ctx, http.StatusOK, component)
	}
}

func (s Server) handleListBookingPage() echo.HandlerFunc {
	return func(c echo.Context) error {
		bookings := make([]*booking.Booking, 0)
		_ = s.db.Find(&bookings)

		bvm := u.Map(bookings, func(b *booking.Booking) *views.ListBookingsViewModel {
			return &views.ListBookingsViewModel{
				Id:       strconv.Itoa(b.Id),
				Url:      templ.SafeURL(fmt.Sprintf("%s/%d", constants.RouteBooking, b.Id)),
				From:     b.From.Format("2006-01-02"),
				To:       b.To.Format("2006-01-02"),
				Platform: b.Platform,
				Name:     b.Name,
			}
		})

		component := views.ListBookings(bvm)
		return s.renderTempl(c, http.StatusOK, component)
	}
}

func (s Server) handleNewBookingPage() echo.HandlerFunc {
	return func(c echo.Context) error {
		component := views.NewBooking(constants.Platforms)
		return s.renderTempl(c, http.StatusOK, component)
	}
}

func (s Server) handleCreateBooking() echo.HandlerFunc {
	return func(c echo.Context) error {
		type NewBooking struct {
			Name           string    `form:"name"`
			PhoneNumber    string    `form:"phone_number"`
			CustomerNumber string    `form:"customer_number"`
			Email          string    `form:"email"`
			From           time.Time `json:"from"`
			To             time.Time `from:"to"`
			Platform       string    `form:"platform"`
			PlatformFees   string    `form:"platform_fees"`
		}
		nb := new(NewBooking)
		err := c.Bind(nb)
		if err != nil {
			log.Warn(err)
			return err
		}

		ts, _ := myTime.ParseFromForm(c.FormValue("from"))
		nb.From = ts
		ts, _ = myTime.ParseFromForm(c.FormValue("to"))
		nb.To = ts

		b := &booking.Booking{
			Name:           nb.Name,
			PhoneNumber:    nb.PhoneNumber,
			CustomerNumber: nb.CustomerNumber,
			Email:          nb.Email,
			From:           nb.From,
			To:             nb.To,
			Platform:       nb.Platform,
			PlatformFees:   nb.PlatformFees,
		}
		_ = s.db.Create(b)
		return c.Redirect(http.StatusSeeOther, fmt.Sprintf("%s/%d", constants.RouteBooking, b.Id))
	}
}

func (s Server) handleBookingPage() echo.HandlerFunc {
	return func(c echo.Context) error {
		idStr := c.Param("id")
		id, err := strconv.Atoi(idStr)
		if err != nil {
			return err
		}
		b := &booking.Booking{Id: id}
		s.db.Preload("Items").First(b)

		component := views.BookingById(b, constants.Items, constants.Platforms, constants.PaymentMethods)
		return s.renderTempl(c, http.StatusOK, component)

	}
}

func (s Server) handleCreateItem() echo.HandlerFunc {
	return func(c echo.Context) error {
		bookingIdStr := c.Param("id")
		bid, err := strconv.Atoi(bookingIdStr)
		if err != nil {
			return err
		}

		type NewItem struct {
			Item          string `form:"item"`
			Quantity      int    `form:"quantity"`
			Price         string `form:"price"`
			PaymentMethod string `form:"method"`
		}
		ni := new(NewItem)
		if err := c.Bind(ni); err != nil {
			log.Warn(err)
			return err
		}

		i := &booking.Item{
			BookingId:     bid,
			Item:          ni.Item,
			Quantity:      ni.Quantity,
			Price:         ni.Price,
			PaymentMethod: ni.PaymentMethod,
		}
		_ = s.db.Create(i)
		return s.renderTempl(c, http.StatusCreated, views.LineItem(i))
	}
}

func (s Server) handleReportsPage() echo.HandlerFunc {
	return func(c echo.Context) error {
		period := c.QueryParam("period")
		if !u.Contains([]string{"month", "year"}, period) {
			period = "month"
		}

		monthStr := c.QueryParam("month")
		month, err := strconv.Atoi(monthStr)
		if err != nil || month < 1 || month > 12 {
			month = int(time.Now().Month())
		}

		yearStr := c.QueryParam("year")
		_, err = strconv.Atoi(yearStr)
		if err != nil {
			yearStr = time.Now().Format("2006")
		}
		return s.renderTempl(c, http.StatusOK, views.Reports(constants.Months, yearStr))
	}
}

func (s Server) handleComputeReport() echo.HandlerFunc {
	return func(c echo.Context) error {
		period := c.QueryParam("period")
		if !u.Contains([]string{"month", "year"}, period) {
			return &echo.HTTPError{
				Code:    http.StatusBadRequest,
				Message: fmt.Sprintf("%q is not a valid period", period),
			}
		}

		monthStr := c.QueryParam("month")
		month, err := strconv.Atoi(monthStr)
		if err != nil || month < 1 || month > 12 {
			return &echo.HTTPError{
				Code:    http.StatusBadRequest,
				Message: fmt.Sprintf("%q is not a valid month", month),
			}
		}

		yearStr := c.QueryParam("year")
		year, err := strconv.Atoi(yearStr)
		if err != nil {
			return &echo.HTTPError{
				Code:    http.StatusBadRequest,
				Message: fmt.Sprintf("%q is not a valid year", year),
			}
		}
		// TODO: compute report view model
		return s.renderTempl(c, http.StatusOK, views.ReportSection())
	}
}

func (s Server) handleCreateInvoicePdf() echo.HandlerFunc {
	return func(c echo.Context) error {
		data := struct {
			Context   map[string]any `json:"context"`
			Path      string         `json:"path"`
			ProjectId string         `json:"projectId"`
		}{
			Context:   map[string]interface{}{},
			Path:      "index.html",
			ProjectId: os.Getenv("HTMLDOCS_PROJECT_ID"),
		}

		payload, err := json.Marshal(data)
		if err != nil {
			fmt.Println("Error marshalling JSON:", err)
			return err
		}

		req, err := http.NewRequest("POST", os.Getenv("HTMLDOCS_URL"), bytes.NewBuffer(payload))
		if err != nil {
			fmt.Println("Error creating request:", err)
			return err
		}

		req.Header.Set("Authorization", "Bearer "+os.Getenv("HTMLDOCS_KEY"))
		req.Header.Set("Content-Type", "application/json")

		client := &http.Client{}
		resp, err := client.Do(req)
		if err != nil {
			fmt.Println("Error sending request:", err)
			return err
		}
		defer resp.Body.Close()

		fmt.Println("Response Status:", resp.Status)
		fmt.Println("Response Status:", resp.Body)

		return nil
	}
}