package v1

import (
	"net/http"

	"github.com/gin-gonic/gin"

	"github.com/gochat/gochat/internal/service"
	"github.com/gochat/gochat/pkg/response"
)

type DyteIntegrationHandler struct {
	svc *service.DyteIntegrationService
}

func NewDyteIntegrationHandler(svc *service.DyteIntegrationService) *DyteIntegrationHandler {
	return &DyteIntegrationHandler{svc: svc}
}

type dyteCreateMeetingRequest struct {
	ConversationID uint `json:"conversation_id"`
}

type dyteAddParticipantRequest struct {
	MessageID uint `json:"message_id"`
}

// CreateMeeting starts a Dyte meeting and creates the Chatwoot integration message.
// Reference: Api::V1::Accounts::Integrations::DyteController#create_a_meeting.
func (h *DyteIntegrationHandler) CreateMeeting(c *gin.Context) {
	accountID, err := parseUintParam(c, "account_id")
	if err != nil || accountID == 0 {
		response.AbortWithStatusError(c, http.StatusBadRequest, response.ErrBadRequest, "invalid account_id")
		return
	}
	var req dyteCreateMeetingRequest
	if err := c.ShouldBindJSON(&req); err != nil || req.ConversationID == 0 {
		response.AbortWithStatusError(c, http.StatusBadRequest, response.ErrBadRequest, "conversation_id is required")
		return
	}
	message, conversation, apiErr, svcErr := h.svc.CreateMeeting(c.Request.Context(), accountID, getUserID(c), req.ConversationID, getRole(c))
	if svcErr != nil {
		handleServiceError(c, svcErr)
		return
	}
	if apiErr != nil {
		c.JSON(http.StatusUnprocessableEntity, gin.H{"error": apiErr.Payload, "error_code": apiErr.Status})
		return
	}
	c.JSON(http.StatusOK, serializeMessage(c.Request.Context(), h.svc.DB(), message, conversation))
}

// AddParticipant adds the current user as a participant to an existing Dyte meeting.
// Reference: Api::V1::Accounts::Integrations::DyteController#add_participant_to_meeting.
func (h *DyteIntegrationHandler) AddParticipant(c *gin.Context) {
	accountID, err := parseUintParam(c, "account_id")
	if err != nil || accountID == 0 {
		response.AbortWithStatusError(c, http.StatusBadRequest, response.ErrBadRequest, "invalid account_id")
		return
	}
	var req dyteAddParticipantRequest
	if err := c.ShouldBindJSON(&req); err != nil || req.MessageID == 0 {
		response.AbortWithStatusError(c, http.StatusBadRequest, response.ErrBadRequest, "message_id is required")
		return
	}
	payload, apiErr, svcErr := h.svc.AddParticipant(c.Request.Context(), accountID, getUserID(c), req.MessageID, getRole(c))
	if svcErr != nil {
		handleServiceError(c, svcErr)
		return
	}
	if apiErr != nil {
		status := http.StatusUnprocessableEntity
		body := gin.H{"error": apiErr.Payload}
		if apiErr.Status != http.StatusUnprocessableEntity {
			body["error_code"] = apiErr.Status
		}
		c.JSON(status, body)
		return
	}
	c.JSON(http.StatusOK, payload)
}

func RegisterDyteIntegrationRoutes(g *gin.RouterGroup, h *DyteIntegrationHandler) {
	dyte := g.Group("/dyte")
	{
		dyte.POST("/create_a_meeting", h.CreateMeeting)
		dyte.POST("/add_participant_to_meeting", h.AddParticipant)
	}
}