old-backend/controllers/contracts_controller.go

package controllers

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

	"github.com/gin-gonic/gin"
	"gitlab.com/pactual1/backend/database/contract"
	"gitlab.com/pactual1/backend/models"
)

func GetLatestContracts(c *gin.Context) {
    // Existing parameters
    limitStr := c.DefaultQuery("limit", "50") 
    offsetStr := c.DefaultQuery("offset", "0")
    status := c.DefaultQuery("status", models.ContractStatusActive)

    // New/Updated optional parameters
    companyName := c.Query("company_name")
    companyAddress := c.Query("company_address")
    companyEmail := c.Query("company_email")
    companyPhone := c.Query("company_phone")
    contractName := c.Query("contract_name")
    startTimeStr := c.Query("start_time")
    endTimeStr := c.Query("end_time")
    deviceIDsStr := c.QueryArray("deviceIDs[]")

    // Convert limit and offset to int
    limit, err := strconv.Atoi(limitStr)
    if err != nil {
        c.JSON(http.StatusBadRequest, gin.H{"error": "Invalid limit value"})
        return
    }

    offset, err := strconv.Atoi(offsetStr)
    if err != nil {
        c.JSON(http.StatusBadRequest, gin.H{"error": "Invalid offset value"})
        return
    }

    // Convert startTime to time.Time
    var startTime time.Time
    if startTimeStr != "" {
        startTimeUnix, err := strconv.ParseInt(startTimeStr, 10, 64)
        if err != nil {
            c.JSON(http.StatusBadRequest, gin.H{"error": "Invalid start_time value"})
            return
        }
        startTime = time.Unix(startTimeUnix, 0)
    }

    // Convert endTime to time.Time
    var endTime time.Time
    if endTimeStr != "" {
        endTimeUnix, err := strconv.ParseInt(endTimeStr, 10, 64)
        if err != nil {
            c.JSON(http.StatusBadRequest, gin.H{"error": "Invalid end_time value"})
            return
        }
        endTime = time.Unix(endTimeUnix, 0)
    }

    // Convert deviceIDs to []int64
    var deviceIDs []int64
    for _, idStr := range deviceIDsStr {
        id, err := strconv.ParseInt(idStr, 10, 64)
        if err != nil {
            c.JSON(http.StatusBadRequest, gin.H{"error": "Invalid deviceID value"})
            return
        }
        deviceIDs = append(deviceIDs, id)
    }

    // Fetch contracts
	contracts, total, st, err := contract.GetContracts(status, companyName, companyAddress, companyEmail, companyPhone, startTime, endTime, contractName, deviceIDs, limit, offset)
	
    if err != nil {
        c.JSON(st, gin.H{"error": err.Error()})
        return
    }

    // Respond with the contracts and the total count
    c.JSON(http.StatusOK, gin.H{"total": total, "contracts": contracts})
}