package handlers

import (
	"context"
	"net/http"
	"strconv"
	"time"

	"github.com/flatrender/render-svc/internal/models"
	"github.com/gin-gonic/gin"
	"github.com/google/uuid"
)

// GET /v1/admin-exports — all exports across users (admin)
func (h *ExportHandler) AdminList(c *gin.Context) {
	page, _ := strconv.Atoi(c.DefaultQuery("page", "1"))
	if page < 1 {
		page = 1
	}
	pageSize, _ := strconv.Atoi(c.DefaultQuery("pageSize", "30"))
	if pageSize < 1 || pageSize > 100 {
		pageSize = 30
	}
	exports, total, err := h.store.ListAllExports(c.Request.Context(), page, pageSize)
	if err != nil {
		c.JSON(http.StatusInternalServerError, models.APIError{Code: "internal_error", Message: err.Error()})
		return
	}
	if exports == nil {
		exports = []*models.Export{}
	}
	c.JSON(http.StatusOK, models.PagedResponse[*models.Export]{
		Data: exports,
		Meta: models.PaginationMeta{Page: page, PageSize: pageSize, Total: total},
	})
}

// DELETE /v1/admin-exports/:export_id (admin)
func (h *ExportHandler) AdminDelete(c *gin.Context) {
	exportID, err := uuid.Parse(c.Param("export_id"))
	if err != nil {
		c.JSON(http.StatusBadRequest, models.APIError{Code: "bad_request", Message: "invalid export_id"})
		return
	}
	if err := h.store.SoftDeleteExportAny(c.Request.Context(), exportID); err != nil {
		c.JSON(http.StatusNotFound, models.APIError{Code: "not_found", Message: err.Error()})
		return
	}
	c.Status(http.StatusNoContent)
}

// GET /v1/admin-exports/:export_id/download-url (admin)
func (h *ExportHandler) AdminDownloadURL(c *gin.Context) {
	exportID, err := uuid.Parse(c.Param("export_id"))
	if err != nil {
		c.JSON(http.StatusBadRequest, models.APIError{Code: "bad_request", Message: "invalid export_id"})
		return
	}
	exp, err := h.store.GetExportByIDAny(c.Request.Context(), exportID)
	if err != nil {
		c.JSON(http.StatusNotFound, models.APIError{Code: "not_found", Message: err.Error()})
		return
	}
	expiry := 15 * time.Minute
	url, err := h.minio.PresignedGetObject(context.Background(), h.bucket, exp.Path, expiry, nil)
	if err != nil {
		c.JSON(http.StatusInternalServerError, models.APIError{Code: "internal_error", Message: "could not generate download URL"})
		return
	}
	c.JSON(http.StatusOK, gin.H{"url": url.String(), "expires_at": time.Now().Add(expiry)})
}