API URL -->> 
        https://theecart.wrteam.in/admin-app/api/api-v2.php

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APIs list 
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1. add_category
2. update_category
3. delete_category
4. get_categories
5. add_subcategory
6. update_subcategory
7. delete_subcategory
8. get_subcategories
9. add_delivery_boy
10.update_delivery_boy
11.delete_delivery_boy
12.get_delivery_boys
13.add_products
14.update_products
15.delete_products
16.get_products
17.send_notification
18.delete_notification
19.get_notification
20.get_orders
21.get_customers
22.get_financial_statistics
23.login
24. update_admin_fcm_id
25. get_privacy_and_terms
26. update_order_status
27. get_permissions
28. update_order_item_status
29. delivery_boy_fund_transfers
30. delivery_boy_transfer_fund
31. get_all_data
32. delete_other_images
33. delete_variant
34. get_units
35. get_taxes

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What parameters to be Passed?  See here >>
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Use POST method to pass the parameters

1. add_category
    accesskey:90336
    add_category:1
    category_name:Beverages
    category_subtitle:Cold Drinks, Soft Drinks, Sodas
    upload_image:FILE
    web_image:FILE

2. update_category
    accesskey:90336
    update_category:1
    id:122
    category_name:Beverages
    category_subtitle:Cold Drinks, Soft Drinks, Sodas
    upload_image:FILE
    web_image:FILE

3. delete_category
    accesskey:90336
    delete_category:1
    id:122

4. get_categories
    accesskey:90336
    get_categories:1
    category_id:28      // {optional}
    limit:10            // {optional}
    offset:0            // {optional}
    sort:id             // {optional}
    order:ASC/DESC      // {optional}

5. add_subcategory
    accesskey:90336
    add_subcategory:1
    subcategory_name:baverages
    subcategory_subtitle:Cold Drinks, Soft Drinks, Sodas
    category_id:46
    upload_image:FILE

6. update_subcategory
    accesskey:90336
    update_subcategory:1
    id:122
    subcategory_name:baverages
    subcategory_subtitle:Cold Drinks, Soft Drinks, Sodas
    category_id:46
    upload_image:FILE   // {optional}

7. delete_subcategory
    accesskey:90336
    delete_subcategory:1
    id:122

8. get_subcategories
    accesskey:90336
    get_subcategories:1
    category_id:28      // {optional}
    limit:10            // {optional}
    offset:0            // {optional}
    sort:id             // {optional}
    order:ASC/DESC      // {optional}

9. add_delivery_boy
    accesskey:90336
    add_delivery_boy:1		
    name:delivery_boy
    mobile:9963258652
    address:time square
    bonus:10
    dob:2020-09-12
    bank_name:SBI
    account_number:12547896523652
    account_name:DEMO
    ifsc_code:254SBIfbfg
    password:asd124
    other_payment_info:description  // {optional}
    driving_license:FILE
    national_identity_card:FILE

10. update_delivery_boy
    accesskey:90336
    update_delivery_boy:1
    id:12
    name:delivery_boy
    mobile:9963258652
    address:time square
    bonus:10
    dob:2020-09-12
    bank_name:SBI
    account_number:12547896523652
    account_name:DEMO
    ifsc_code:254SBIfbfg
    status:1
    other_payment_info:description // {optional}
    password:asd124                // {optional}
    driving_license:FILE           // {optional}
    national_identity_card:FILE    // {optional}

11. delete_delivery_boy
    accesskey:90336
    delete_delivery_boy:1		
    id:302

12. get_delivery_boys
    accesskey:90336
    get_delivery_boys:1
    id:292           // {optional}
    limit:10         // {optional}
    offset:0         // {optional}
    sort:id          // {optional}
    order:ASC/DESC   // {optional}
    search:value     // {optional}

13. add_products
    accesskey:90336
    add_products:1
    name:potato
    category_id:31
    subcategory_id:115
    description:potatos
    tax_id:4                    // {optional}
    manufacturer:india          // {optional}
    made_in:india               // {optional}
    return_status:0 / 1         // {optional}
    cancelable_status:0 / 1     // {optional}
    till_status: received / processed / shipped    // {optional}
    indicator:	 1 - veg / 2 - non-veg             // {optional}
    size_chart:FILE         // {optional}     
    shipping_delivery:Potatos   // {optional}  
    image:FILE          
    other_images[]:FILE

    type:packet
    measurement:500,400
    measurement_unit_id:4,1
    price:175,145
    discounted_price:60,30       // {optional}
    serve_for:Available / Sold Out,Available / Sold Out
    stock:992,458
    stock_unit_id:4,1

    type:loose
    measurement:1,1
    measurement_unit_id:1,5
    price:100,500
    discounted_price:20,15       // {optional}
    serve_for:Available / Sold Out 
    stock:997
    stock_unit_id:1

14. update_products
    accesskey:90336
    update_products:1
    id:507
    name:potato
    category_id:31
    subcategory_id:115
    description:potatos
    product_variant_id:510,209
    tax_id:4                    // {optional}
    manufacturer:india          // {optional}
    made_in:india               // {optional}
    return_status:0 / 1         // {optional}
    cancelable_status:0 / 1     // {optional}
    shipping_delivery:Potatos   // {optional} 
    size_chart:FILE             // {optional}     
    image:FILE                  // {optional} 
    other_images[]:FILE         // {optional} 
    till_status:received / processed / shipped      // {optional}
    indicator: 1 - veg / 2 - non-veg                // {optional}

    type:packet
    measurement:500,100
    measurement_unit_id:4,2
    price:75,50
    serve_for:Available / Sold Out,Available / Sold Out
    stock:992,987
    stock_unit_id:4,2
    discounted_price:10,5     // {optional}

    type:loose
    measurement:1,1
    measurement_unit_id:1,5
    price:100,400
    serve_for:Available / Sold Out
    stock:997
    stock_unit_id:1
    discounted_price:20,15       // {optional}

15. delete_products
    accesskey:90336
    delete_products:1
    product_id:722

16. get_products
    accesskey:90336
    get_products:1
    id:468              // {optional}
    category_id:30      // {optional}
    subcategory_id:119  // {optional}
    limit:10            // {optional}
    offset:0            // {optional}
    search:value        // {optional}
    filter:low_stock | out_stock    // {optional}
    sort:new / old / high / low     // {optional}

17. send_notification
    accesskey:90336
    send_notification:1  
    title:test
    message:testing
    type:default / category / product
    type_id:32
    image:FILE          // {optional}

18. delete_notification
    accesskey:90336
    delete_notification:1    
    id:915

19. get_notification
    accesskey:90336
    get_notification:1    

20. get_orders
    accesskey:90336
    get_orders:1
    order_id:12             // {optional}
    start_date:2020-10-29   // {optional} {YYYY-mm-dd}
    end_date:2020-10-29     // {optional} {YYYY-mm-dd}
    limit:10                // {optional}
    offset:0                // {optional}
    sort:id                 // {optional}
    order:ASC/DESC          // {optional}
    search:value            // {optional}
    filter_order:received | processed | shipped | delivered | cancelled | returned | awaiting_payment // {optional}

21. get_customers
    accesskey:90336
    get_customers:1
    city_id:119     // {optional}
    limit:10        // {optional}
    offset:0        // {optional}
    sort:id         // {optional}
    order:ASC/DESC  // {optional}
    search:value    // {optional}

22. get_financial_statistics
    accesskey:90336
    get_financial_statistics:1

23. login
    accesskey:90336
    username:admin
    password:admin123
    fcm_id:YOUR_FCM_ID   // {optional}
    login:1

24. update_admin_fcm_id
    accesskey:90336
    id:1
    fcm_id:YOUR_FCM_ID
    update_admin_fcm_id:1

25. get_privacy_and_terms
    accesskey:90336
    get_privacy_and_terms:1

26. update_order_status
    accesskey:90336
    update_order_status:1
    id:169
    status:cancelled
    delivery_boy_id:20  // {optional}

27. get_permissions
    accesskey:90336
    id:1
    get_permissions:1
    type: orders/payment/customers/featured/products_order/products/subcategories/categories/home_sliders/faqs/reports/locations/settings/transactions/notifications/return_requests/delivery_boys/promo_codes/new_offers   // {optional}

28. update_order_item_status
    accesskey:90336
    update_order_item_status:1
    order_item_id:7166
    status:cancelled
    order_id:3445

29. delivery_boy_fund_transfers
    accesskey:90336
    delivery_boy_fund_transfers:1
    delivery_boy_id:104     // {optional}
    limit:10                // {optional}
    offset:0                // {optional}
    sort:id                 // {optional}
    order:ASC/DESC          // {optional}
    search:value            // {optional}

30. delivery_boy_transfer_fund
    accesskey:90336
    delivery_boy_transfer_fund:1		
    delivery_boy_id:302
    delivery_boy_balance:20
    amount:20
    message: message from admin     // {optional}

31. get_all_data
    accesskey:90336
    get_all_data:1

32. delete_other_images
    accesskey:90336
    delete_other_images:1
    product_id:1
    image:1    // {index of other image array}

33. delete_variant
    accesskey:90336
    delete_variant:1
    variant_id:1

34. get_units
    accesskey:90336
    get_units:1

35. get_taxes
    accesskey:90336
    get_taxes:1