package handlers

import (
	"fmt"
	"strconv"
	"strings"

	"github.com/gofiber/fiber/v2"

	"polar/internal/web/middleware"
)

// RepoCollaboratorAddSubmit grants a user access to the repository.
func (h *Handler) RepoCollaboratorAddSubmit(c *fiber.Ctx) error {
	r, _, err := h.loadAuthorizedRepo(c, true)
	if err != nil {
		return nil
	}
	viewer := middleware.CurrentUser(c)
	if viewer == nil || viewer.ID != r.OwnerID {
		return h.renderErrorT(c, fiber.StatusForbidden, "err.forbidden", "err.collab_forbidden")
	}

	username := strings.TrimSpace(c.FormValue("username"))
	role := strings.TrimSpace(c.FormValue("role"))

	if err := h.repoSvc.AddCollaborator(c.UserContext(), r, username, role); err != nil {
		h.setFlashT(c, "flash.collab_failed", err.Error())
	} else {
		h.setFlashT(c, "flash.collab_added", username)
	}
	return c.Redirect(fmt.Sprintf("/%s/%s/settings#collaborators", r.OwnerUsername, r.Name), fiber.StatusSeeOther)
}

// RepoCollaboratorRemoveSubmit revokes a user's access to the repository.
func (h *Handler) RepoCollaboratorRemoveSubmit(c *fiber.Ctx) error {
	r, _, err := h.loadAuthorizedRepo(c, true)
	if err != nil {
		return nil
	}
	viewer := middleware.CurrentUser(c)
	if viewer == nil || viewer.ID != r.OwnerID {
		return h.renderErrorT(c, fiber.StatusForbidden, "err.forbidden", "err.collab_forbidden")
	}

	userID, _ := strconv.ParseInt(strings.TrimSpace(c.FormValue("user_id")), 10, 64)
	if userID > 0 {
		if err := h.repoSvc.RemoveCollaborator(c.UserContext(), r.ID, userID); err != nil {
			h.setFlashT(c, "flash.collab_failed", err.Error())
		} else {
			h.setFlashT(c, "flash.collab_removed")
		}
	}
	return c.Redirect(fmt.Sprintf("/%s/%s/settings#collaborators", r.OwnerUsername, r.Name), fiber.StatusSeeOther)
}