package members

import (
	"net/http"
	"time"

	"github.com/gin-gonic/gin"

	"galo/internal/auth"
	"galo/internal/httpx"
)

type Handler struct {
	svc *Service
}

func NewHandler(svc *Service) *Handler { return &Handler{svc: svc} }

func (h *Handler) List(c *gin.Context) {
	list, err := h.svc.List(c.Request.Context(), c.Param("id"), auth.UserID(c))
	if err != nil {
		httpx.RespondError(c, err)
		return
	}
	c.JSON(http.StatusOK, gin.H{"members": list})
}

type inviteRequest struct {
	Role      string `json:"role" binding:"required"`
	ExpiresIn string `json:"expires_in"`
	MaxUses   int    `json:"max_uses"`
}

func (h *Handler) CreateInvite(c *gin.Context) {
	var req inviteRequest
	if err := c.ShouldBindJSON(&req); err != nil {
		httpx.RespondError(c, httpx.BadRequest("invalid_request", "role is required"))
		return
	}
	var ttl time.Duration
	if req.ExpiresIn != "" {
		d, err := time.ParseDuration(req.ExpiresIn)
		if err != nil {
			httpx.RespondError(c, httpx.BadRequest("invalid_expires_in", "invalid expires_in duration"))
			return
		}
		ttl = d
	}
	inv, err := h.svc.CreateInvite(c.Request.Context(), c.Param("id"), auth.UserID(c), CreateInviteInput{
		Role:    req.Role,
		TTL:     ttl,
		MaxUses: req.MaxUses,
	})
	if err != nil {
		httpx.RespondError(c, err)
		return
	}
	c.JSON(http.StatusCreated, gin.H{"invite": inv})
}

func (h *Handler) AcceptInvite(c *gin.Context) {
	inv, err := h.svc.Accept(c.Request.Context(), c.Param("token"), auth.UserID(c))
	if err != nil {
		httpx.RespondError(c, err)
		return
	}
	c.JSON(http.StatusOK, gin.H{"album_id": inv.AlbumID, "role": inv.Role})
}

func (h *Handler) InviteInfo(c *gin.Context) {
	inv, err := h.svc.InviteInfo(c.Request.Context(), c.Param("token"))
	if err != nil {
		httpx.RespondError(c, err)
		return
	}
	c.JSON(http.StatusOK, gin.H{"invite": gin.H{
		"album_id":   inv.AlbumID,
		"role":       inv.Role,
		"expires_at": inv.ExpiresAt,
	}})
}

type roleRequest struct {
	Role string `json:"role" binding:"required"`
}

func (h *Handler) ChangeRole(c *gin.Context) {
	var req roleRequest
	if err := c.ShouldBindJSON(&req); err != nil {
		httpx.RespondError(c, httpx.BadRequest("invalid_request", "role is required"))
		return
	}
	if err := h.svc.ChangeRole(c.Request.Context(), c.Param("id"), auth.UserID(c), c.Param("user_id"), req.Role); err != nil {
		httpx.RespondError(c, err)
		return
	}
	c.Status(http.StatusNoContent)
}

func (h *Handler) Remove(c *gin.Context) {
	if err := h.svc.Remove(c.Request.Context(), c.Param("id"), auth.UserID(c), c.Param("user_id")); err != nil {
		httpx.RespondError(c, err)
		return
	}
	c.Status(http.StatusNoContent)
}