# Deploying Cosmwasm Contracts in LocalOsmosis

The following is a quick guide that shows the basics of deploying a contract to Osmosis. It covers:

- Seting up LocalOsmosis with the Osmosis installer.
- osmosisd binary automatically configured to connect to your localOsmosis
- localOsmosis setup in yout $HOME directory (~/localosmosis)
- Deploy a smart contract
- Download, compile, optimize
- Initialise, Instantiate, Query Contract

## Localosmosis
The easiest way to setup your localOsmosis is by downloading the [automated installer](https://get.osmosis.zone/). You can learn more about localOsmosis by reading the [README](https://github.com/osmosis-labs/localosmosis) in the official repo.

Run the following and choose option #3.

curl -sL https://get.osmosis.zone/install > i.py && python3 i.py


### Start localOsmosis

Inside a separate bash window start your localOsmosis which was installed in ~/localosmosis

cd ~/localosmosis
docker-compose up

You will start seeing LocalOsmosis block activity in your terminal. Keep LocalOsmosis running while you perform the next steps in a new terminal window.


#### Tip - LocalOsmosis Accounts
To view the LocalOsmosis wallet information, visit the [LocalOsmosis accounts page]([developing/tools/localosmosis.html#accounts](https://github.com/osmosis-labs/localosmosis#accounts)).

# Deploy a Smart Contract to Osmosis

## Download

# get the code
git clone https://github.com/CosmWasm/cosmwasm-examples
cd cosmwasm-examples
git fetch
cd contracts/erc20

## Compile

#compile the wasm contract
rustup default stable
cargo wasm

### Optimise it

sudo docker run --rm -v "$(pwd)":/code \
    --mount type=volume,source="$(basename "$(pwd)")_cache",target=/code/target \
    --mount type=volume,source=registry_cache,target=/usr/local/cargo/registry \
    cosmwasm/rust-optimizer:0.12.6

You now have a `cw_erc20.wasm` artifact inside the artifact directory.

## Created a local key
Create a key using one of the seeds provided in localOsmosis.

osmosisd keys add <unsafe-test-key-name> --recover

Example test1 key from [here](https://github.com/osmosis-labs/localosmosis#accounts):

notice oak worry limit wrap speak medal online prefer cluster roof addict wrist behave treat actual wasp year salad speed social layer crew genius

## Deploy to your localOsmosis chain

cd artifacts
osmosisd tx wasm store cw_erc20.wasm  --from <unsafe-test-key-name> --chain-id=<chain-id> \
  --gas-prices 0.1uosmo --gas auto --gas-adjustment 1.3 -b block -y

<unsafe-test-key-name> = Name of your local key.
<chain-id> = localosmosis

### Save code_id
Save the code_id from the output of the command above.

or save it by running jq

cd artifacts
TX=$(osmosisd tx wasm store cw_erc20.wasm  --from <unsafe-test-key-name> --chain-id=localosmosis --gas-prices 0.1uosmo --gas auto --gas-adjustment 1.3 -b block --output json -y | jq -r '.txhash')
CODE_ID=$(osmosisd query tx $TX --output json | jq -r '.logs[0].events[-1].attributes[0].value')   

echo $CODE_ID 

If this is a brand new localOsmosis instante it should be `1`

# Initialise the Contract

## Generate JSON
Type node in the terminal and hit enter to access it. Copy and paste the following:

const initHash = {
  name: "Test Coin",
  symbol: "TEST",
  decimals: 6,
  initial_balances: [
    { address: "<validator-self-delegate-address>", amount: "12345678000"},
  ]
};

<validator-self-delegate-address> = Choose the test1 address

Then copy and paste this:

JSON.stringify(initHash);

The output should be something like:


## Instantiate the contract

osmosisd tx wasm instantiate $CODE_ID \
    '{"name":"Test Coin","symbol":"TEST","decimals":6,"initial_balances":[{"address":"<validator-self-delegate-address>","amount":"12345678000"}]}' \
    --amount 50000uosmo  --label "Testcoin erc20" --from <unsafe-test-key-name> --chain-id <chain-id> --gas-prices 0.1uosmo --gas auto --gas-adjustment 1.3 -b block -y

Replace
- <validator-self-delegate-address> : wallet address
- <chain-id> : localosmosis
- <unsafe-test-key-name> : Local key name

### Lookup contract address

CONTRACT_ADDR=$(osmosisd query wasm list-contract-by-code $CODE_ID --output json | jq -r '.contracts[0]')

### Query contract

osmosisd query wasm contract $CONTRACT_ADDR

# Important
This guide will be updated and published to the official docs soon.
Credits to: https://cosmwasm.com/