package api

import (
	"fmt"
	"git.solsynth.dev/hydrogen/messaging/pkg/internal/gap"
	"git.solsynth.dev/hydrogen/messaging/pkg/internal/models"
	"git.solsynth.dev/hydrogen/messaging/pkg/internal/server/exts"
	"git.solsynth.dev/hydrogen/messaging/pkg/internal/services"
	"github.com/gofiber/fiber/v2"
)

func getEvent(c *fiber.Ctx) error {
	if err := gap.H.EnsureAuthenticated(c); err != nil {
		return err
	}
	user := c.Locals("user").(models.Account)
	alias := c.Params("channel")
	id, _ := c.ParamsInt("eventId")

	var err error
	var channel models.Channel
	if val, ok := c.Locals("realm").(models.Realm); ok {
		channel, err = services.GetChannelWithAlias(alias, val.ID)
	} else {
		channel, err = services.GetChannelWithAlias(alias)
	}
	if err != nil {
		return fiber.NewError(fiber.StatusNotFound, err.Error())
	} else if _, _, err := services.GetAvailableChannel(channel.ID, user); err != nil {
		return fiber.NewError(fiber.StatusForbidden, fmt.Sprintf("you need join the channel before you read the messages: %v", err))
	}

	event, err := services.GetEvent(channel, uint(id))
	if err != nil {
		return fiber.NewError(fiber.StatusNotFound, err.Error())
	}

	return c.JSON(event)
}

func listEvent(c *fiber.Ctx) error {
	if err := gap.H.EnsureAuthenticated(c); err != nil {
		return err
	}
	user := c.Locals("user").(models.Account)
	take := c.QueryInt("take", 0)
	offset := c.QueryInt("offset", 0)
	alias := c.Params("channel")

	var err error
	var channel models.Channel
	if val, ok := c.Locals("realm").(models.Realm); ok {
		channel, err = services.GetChannelWithAlias(alias, val.ID)
	} else {
		channel, err = services.GetChannelWithAlias(alias)
	}
	if err != nil {
		return fiber.NewError(fiber.StatusNotFound, err.Error())
	} else if _, _, err := services.GetAvailableChannel(channel.ID, user); err != nil {
		return fiber.NewError(fiber.StatusForbidden, fmt.Sprintf("you need join the channel before you read the messages: %v", err))
	}

	count := services.CountEvent(channel)
	events, err := services.ListEvent(channel, take, offset)
	if err != nil {
		return fiber.NewError(fiber.StatusNotFound, err.Error())
	}

	return c.JSON(fiber.Map{
		"count": count,
		"data":  events,
	})
}

func newRawEvent(c *fiber.Ctx) error {
	if err := gap.H.EnsureGrantedPerm(c, "CreateMessagingRawEvent", true); err != nil {
		return err
	}
	user := c.Locals("user").(models.Account)
	alias := c.Params("channel")

	var data struct {
		Uuid string         `json:"uuid" validate:"required"`
		Type string         `json:"type" validate:"required"`
		Body map[string]any `json:"body"`
	}

	if err := exts.BindAndValidate(c, &data); err != nil {
		return err
	} else if len(data.Uuid) < 36 {
		return fiber.NewError(fiber.StatusBadRequest, "message uuid was not valid")
	}

	var err error
	var channel models.Channel
	var member models.ChannelMember
	if val, ok := c.Locals("realm").(models.Realm); ok {
		channel, member, err = services.GetAvailableChannelWithAlias(alias, user, val.ID)
		if err != nil {
			return fiber.NewError(fiber.StatusNotFound, err.Error())
		}
	} else {
		channel, member, err = services.GetAvailableChannelWithAlias(alias, user)
		if err != nil {
			return fiber.NewError(fiber.StatusNotFound, err.Error())
		} else if member.PowerLevel < 0 {
			return fiber.NewError(fiber.StatusForbidden, "you have not enough permission to send message")
		}
	}

	event := models.Event{
		Uuid:      data.Uuid,
		Body:      data.Body,
		Type:      data.Type,
		Sender:    member,
		Channel:   channel,
		ChannelID: channel.ID,
		SenderID:  member.ID,
	}

	if event, err = services.NewEvent(event); err != nil {
		return fiber.NewError(fiber.StatusBadRequest, err.Error())
	}

	return c.JSON(event)
}