want some changes in existing android native app which has CodeIgniter backend need api to add some fuctionality

Please place bid only after reading this, i dont want anyone to change price after discussion , tell me the price for only given work there no extra work 1)add two more sections of categories on fron page- = farm cart and sell product to merchant only categories will be on front page no any ads 2)conditions on listing entry page 1) item condition,2) is shop these two options will be display only for categories- 1)tractor, 2)tractors tool and 3)other for categories – Animal, Animal Feed, Fertilizer, seeds and plants for categories – Nursery- add option = price per = (dropdown) 1 qty, 1 crate of 50 qty , 1 crate of 100 qty rename “listing title” label by – Name and type for categories- tractors, tractors tool and other - add options - model name: year of purchase; for categories fruits , vegetables and flowers- add options – 1)price per – (drop down) gm, kg, quantity ; 2) Approximate Available stock – 3)users profile picture and name in menu drawer 4)change layout of all category page( check attachment) Text after search bar, location and search up to km section- Location button for change the users location and search upto km button for view ads by km;s filter For 1) Domestic animals - your cow, buffalo, goat, ox and more you can buy and sell 2) Nursery – you can buy or sell any seeding nursery 3) organic fertilizers – 4)Animal Feed – you can sell or buy your products 5) Seeds – you can sell or buy seeds 6) Plants – you can sell or buy seeding like - Onion, rice, and sugarcane 7)Grains – you can sell or buy your grains 8) for rest of all the categories simply add text – you can buy or sell (category name) After every text add the title Fresh Recommendation- 5) remove subcategories 6) remove select state page, because searching ads and posting ads will work using google location .7) we want invite on WhatsApp with your friend and earn functionality From the admin panel admin can select the winner and in the app it will show the selected users (Winner) 8)show weather with location-based weather 9) add mobile number field on email registration, remove email otp verification, its asking to enter email otp after signup using email, remove sign in with phone option. There are some bugs on chatting function and posting ads button need to be fix these also