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add simple_weather_oracle code
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‎src/04_random/codes/simple_weather_oracle/Move.lock

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# @generated by Move, please check-in and do not edit manually.
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[move]
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version = 2
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manifest_digest = "BF831D32EE16AD916FC6343DB6E78FF816EA86F39D18A80EDEBFAC01B76CC321"
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deps_digest = "F8BBB0CCB2491CA29A3DF03D6F92277A4F3574266507ACD77214D37ECA3F3082"
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dependencies = [
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{ name = "Sui" },
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]
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[[move.package]]
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name = "MoveStdlib"
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source = { git = "https://github.com/MystenLabs/sui.git", rev = "framework/testnet", subdir = "crates/sui-framework/packages/move-stdlib" }
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[[move.package]]
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name = "Sui"
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source = { git = "https://github.com/MystenLabs/sui.git", rev = "framework/testnet", subdir = "crates/sui-framework/packages/sui-framework" }
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dependencies = [
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{ name = "MoveStdlib" },
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]
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[move.toolchain-version]
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compiler-version = "1.33.0"
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edition = "2024.beta"
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flavor = "sui"
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[env]
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[env.devnet]
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chain-id = "6b9b3fe9"
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original-published-id = "0x95706c5b5adac5541bcb4398996f9d3662f0350e67703b22aa5f894b498d34df"
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latest-published-id = "0x95706c5b5adac5541bcb4398996f9d3662f0350e67703b22aa5f894b498d34df"
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published-version = "1"

‎src/04_random/codes/simple_weather_oracle/Move.toml

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[package]
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name = "simple_weather_oracle"
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edition = "2024.beta" # edition = "legacy" to use legacy (pre-2024) Move
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version = "1.0.0"
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published-at = "0x95706c5b5adac5541bcb4398996f9d3662f0350e67703b22aa5f894b498d34df"
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# license = "" # e.g., "MIT", "GPL", "Apache 2.0"
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# authors = ["..."] # e.g., ["Joe Smith (joesmith@noemail.com)", "John Snow (johnsnow@noemail.com)"]
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[dependencies]
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Sui = { git = "https://github.com/MystenLabs/sui.git", subdir = "crates/sui-framework/packages/sui-framework", rev = "framework/testnet" }
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# For remote import, use the `{ git = "...", subdir = "...", rev = "..." }`.
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# Revision can be a branch, a tag, and a commit hash.
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# MyRemotePackage = { git = "https://some.remote/host.git", subdir = "remote/path", rev = "main" }
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# For local dependencies use `local = path`. Path is relative to the package root
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# Local = { local = "../path/to" }
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# To resolve a version conflict and force a specific version for dependency
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# override use `override = true`
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# Override = { local = "../conflicting/version", override = true }
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[addresses]
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oracle = "0x95706c5b5adac5541bcb4398996f9d3662f0350e67703b22aa5f894b498d34df"
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# Named addresses will be accessible in Move as `@name`. They're also exported:
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# for example, `std = "0x1"` is exported by the Standard Library.
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# alice = "0xA11CE"
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[dev-dependencies]
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# The dev-dependencies section allows overriding dependencies for `--test` and
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# `--dev` modes. You can introduce test-only dependencies here.
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# Local = { local = "../path/to/dev-build" }
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[dev-addresses]
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# The dev-addresses section allows overwriting named addresses for the `--test`
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# and `--dev` modes.
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# alice = "0xB0B"

‎src/04_random/codes/simple_weather_oracle/sources/simple_weather_oracle.move

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module oracle::simple_weather {
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use std::string::{Self, String};
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use sui::dynamic_object_field as dof;
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use sui::package;
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/// Define a capability for the admin of the oracle.
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public struct AdminCap has key, store { id: UID }
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/// // Define a one-time witness to create the `Publisher` of the oracle.
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public struct SIMPLE_WEATHER has drop {}
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// Define a struct for the weather oracle
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public struct WeatherOracle has key {
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id: UID,
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/// The address of the oracle.
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address: address,
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/// The name of the oracle.
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name: String,
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/// The description of the oracle.
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description: String,
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}
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// Define a struct for each city that the oracle covers
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public struct CityWeatherOracle has key, store {
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id: UID,
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geoname_id: u32, // The unique identifier of the city
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name: String, // The name of the city
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country: String, // The country of the city
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pressure: u32, // The atmospheric pressure in hPa
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// ...
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}
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/// Module initializer. Uses One Time Witness to create Publisher and transfer it to sender.
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fun init(otw: SIMPLE_WEATHER, ctx: &mut TxContext) {
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package::claim_and_keep(otw, ctx); // Claim ownership of the one-time witness and keep it
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let cap = AdminCap { id: object::new(ctx) }; // Create a new admin capability object
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transfer::share_object(WeatherOracle {
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id: object::new(ctx),
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address: tx_context::sender(ctx),
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name: string::utf8(b"SuiMeteo"),
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description: string::utf8(b"A weather oracle for posting weather updates (temperature, pressure, humidity, visibility, wind metrics and cloud state) for major cities around the world. Currently the data is fetched from https://openweathermap.org. SuiMeteo provides the best available information, but it does not guarantee its accuracy, completeness, reliability, suitability, or availability. Use it at your own risk and discretion."),
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});
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transfer::public_transfer(cap, tx_context::sender(ctx)); // Transfer the admin capability to the sender.
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}
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// Public function for adding a new city to the oracle
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public fun add_city(
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_: &AdminCap, // The admin capability
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oracle: &mut WeatherOracle, // A mutable reference to the oracle object
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geoname_id: u32, // The unique identifier of the city
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name: String, // The name of the city
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country: String, // The country of the city
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ctx: &mut TxContext // A mutable reference to the transaction context
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) {
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dof::add(&mut oracle.id, geoname_id, // Add a new dynamic object field to the oracle object with the geoname ID as the key and a new city weather oracle object as the value.
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CityWeatherOracle {
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id: object::new(ctx), // Assign a unique ID to the city weather oracle object
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geoname_id, // Set the geoname ID of the city weather oracle object
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name, // Set the name of the city weather oracle object
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country, // Set the country of the city weather oracle object
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pressure: 0, // Initialize the pressure to be zero
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}
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);
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}
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// Public function for removing an existing city from the oracle
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public fun remove_city(_: &AdminCap, oracle: &mut WeatherOracle, geoname_id: u32) {
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let CityWeatherOracle { id, geoname_id: _, name: _, country: _, pressure: _} = dof::remove(&mut oracle.id, geoname_id);
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object::delete(id);
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}
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// Public function for updating the weather conditions of a city
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public fun update(
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_: &AdminCap,
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oracle: &mut WeatherOracle,
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geoname_id: u32,
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pressure: u32,
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) {
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let city_weather_oracle_mut = dof::borrow_mut<u32, CityWeatherOracle>(&mut oracle.id, geoname_id); // Borrow a mutable reference to the city weather oracle object with the geoname ID as the key
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city_weather_oracle_mut.pressure = pressure;
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}
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/// Returns the `pressure` of the `CityWeatherOracle` with the given `geoname_id`.
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public fun city_weather_oracle_pressure(
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weather_oracle: &WeatherOracle,
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geoname_id: u32
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): u32 {
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let city_weather_oracle = dof::borrow<u32, CityWeatherOracle>(&weather_oracle.id, geoname_id);
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city_weather_oracle.pressure
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}
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// This function updates the name of a weather oracle contract.
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// It takes an admin capability, a mutable reference to the weather oracle, and a new name as arguments.
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// It assigns the new name to the weather oracle's name field.
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public fun update_name(_: &AdminCap, weather_oracle: &mut WeatherOracle, name: String) {
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weather_oracle.name = name;
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}
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// This function updates the description of a weather oracle contract.
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// It takes an admin capability, a mutable reference to the weather oracle, and a new description as arguments.
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// It assigns the new description to the weather oracle's description field.
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public fun update_description(_: &AdminCap, weather_oracle: &mut WeatherOracle, description: String) {
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weather_oracle.description = description;
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}
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}

‎src/04_random/codes/simple_weather_oracle/tests/simple_weather_oracle_tests.move

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/*
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#[test_only]
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module simple_weather_oracle::simple_weather_oracle_tests {
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// uncomment this line to import the module
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// use simple_weather_oracle::simple_weather_oracle;
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const ENotImplemented: u64 = 0;
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#[test]
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fun test_simple_weather_oracle() {
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// pass
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}
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#[test, expected_failure(abort_code = ::simple_weather_oracle::simple_weather_oracle_tests::ENotImplemented)]
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fun test_simple_weather_oracle_fail() {
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abort ENotImplemented
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}
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}
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*/

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