Updates.

src/pages/cw-multi-test/getting-started/counter/counter-cosmwasm.mdx

@@ -2,7 +2,7 @@
 tags: ["multitest", "getting started", "counter", "CosmWasm"]
 ---
 
-import { Card, Cards } from "nextra/components";
+import { Callout, Card, Cards } from "nextra/components";
 
 # Counter written in CosmWasm
 
@@ -16,7 +16,7 @@ feel free to check the detailed explanations provided for each code snippet.
 
 ### Cargo.toml
 
-```toml filename="Cargo.toml" copy
+```toml showLineNumbers filename="Cargo.toml" copy
 [package]
 name = "counter"
 version = "0.1.0"
@@ -48,7 +48,94 @@ cw-multi-test = { version = "2", features = ["cosmwasm_2_0"] }
  <Card title="🦘  Skip this time" href="#librs" icon="" children="" />
 </Cards>
 
-(todo: extremely detailed explanation)
+`Cargo.toml` file is a configuration file for a Rust project, in our case for a smart contract
+written in Rust. Here's a detailed explanation of each section and what it's doing.
+
+**\[package\]**
+
+```toml showLineNumbers{1} filename="Cargo.toml" copy
+[package]
+name = "counter"
+version = "0.1.0"
+edition = "2021"
+```
+
+- `[package]` section provides metadata about the Rust package (smart contract library in our case).
+- `name = "counter"` specifies the name of the package, it's named **counter** like our smart
+ contract.
+- `version = "0.1.0"` indicates the current version of the package and the counter smart contract.
+- `edition = "2021"` specifies the Rust edition being used; editions in Rust are sets of language
+ and compiler improvements, with 2021 being one of the latest editions at the time, providing the
+ latest features and enhancements.
+
+**\[lib\]**
+
+```toml showLineNumbers{8} filename="Cargo.toml" copy
+[lib]
+crate-type = ["cdylib", "rlib"]
+```
+
+- `[lib]` section specifies settings for building the library.
+- `crate-type` enumerates types of libraries to be produced during compiling.
+- `"cdylib"` specifies that the package will be compiled as a C-compatible dynamic library; which is
+ required for smart contracts to run on the CosmWasm runtime.
+- `"rlib"` specifies a Rust library file that can be used as a dependency for other Rust projects,
+ in our case for other smart contracts.
+
+**\[features\]**
+
+```toml showLineNumbers{11} filename="Cargo.toml" copy
+[features]
+# use library feature to disable all instantiate/execute/query exports
+library = []
+```
+
+- `[features]` section defines optional features for the Rust package.
+- `library = []` defines a feature named "library", which by convention disables exporting smart
+ contract entry-points when set.
+
+**\[dependencies\]**
+
+```toml showLineNumbers{15} filename="Cargo.toml" copy
+[dependencies]
+cosmwasm-schema = "2"
+cosmwasm-std = { version = "2" }
+cw-storage-plus = "2"
+schemars = "0.8"
+serde = "1.0"
+```
+
+- `[dependencies]` section lists the libraries that the package depends on.
+- `cosmwasm-schema` is used for generating JSON schemas from Rust data structures, which is useful
+ for documentation and ensuring compatibility of messages and queries.
+- `cosmwasm-std` is the standard library for CosmWasm contracts, providing common types and
+ utilities needed for interacting with the CosmWasm runtime.
+- `cw-storage-plus` is a library that provides advanced storage abstractions and utilities on top of
+ the basic storage capabilities in CosmWasm, making it easier to manage state within contracts.
+- `schemars` is a library for generating JSON schemas, which complements `cosmwasm-schema` by
+ providing additional features for schema generation.
+- `serde` is a widely used serialization library in Rust, allowing easy conversion of Rust data
+ structures to and from formats like JSON, which is crucial for data interchange in smart
+ contracts.
+
+**\[dev-dependencies\]**
+
+```toml showLineNumbers{22} filename="Cargo.toml" copy
+[dev-dependencies]
+cw-multi-test = { version = "2", features = ["cosmwasm_2_0"] }
+```
+
+- `[dev-dependencies]` section lists dependencies that are only needed for development and testing.
+- `cw-multi-test` is a name of **`MultiTest`** library, and should **ALWAYS** 🚨 be placed in
+ `[dev-dependencies]` section.
+
+Overall, this Cargo.toml file configures a Rust project for a CosmWasm-based smart contract. It sets
+up the basic package details, specifies how the contract should be compiled, defines dependencies
+for core functionality and testing, and includes features to enable or disable certain parts of the
+contract code. This setup ensures the contract can be developed, tested, and deployed effectively
+within the CosmWasm ecosystem.
+
+---
 
 ### lib.rs