bili-rs Development Skill

Rust rewrite of bilibili-cli. Single binary, no runtime deps. Full feature parity with the Python original.

Architecture (strict layering)

cli/ (clap structs only)  →  commands/ (business logic)  →  client/ (HTTP async fn)
                                      ↓
                               payloads/ (normalize raw JSON → structs)
                                      ↓
                               formatter.rs (JSON/YAML/Rich output)

Rules:

• cli/ — clap derive structs only, zero business logic
• commands/ — calls client/, never builds HTTP requests directly
• client/ — never imports clap or formatter

Adding a New Command

1. Add clap struct in src/cli/\x3Cdomain>.rs
2. Add handler in src/commands/\x3Cdomain>.rs
3. Add API call(s) in src/client/\x3Cdomain>.rs
4. Add payload normalizer in src/payloads/\x3Cdomain>.rs if needed
5. Wire into src/main.rs run() match arm

Key Patterns

Error handling

// client/ layer: always map API errors
let code = body["code"].as_i64().unwrap_or(-1);
if code != 0 {
    return Err(map_api_error(code, body["message"].as_str().unwrap_or("unknown")));
}

// commands/ layer
match result {
    Ok(data) => formatter::output(data, format),
    Err(e) => { emit_error(&e, format); std::process::exit(1); }
}

Output envelope (never change the field names)

SuccessEnvelope { ok: true, schema_version: "1", data: T }
ErrorEnvelope   { ok: false, schema_version: "1", error: ErrorBody }

Output format resolution

--json > --yaml > $OUTPUT env var > TTY→Rich / non-TTY→YAML

Authentication levels

• Optional — load saved creds if available, don't fail if missing
• Read — requires SESSDATA
• Write — requires SESSDATA + bili_jct

Credential file: ~/.bilibili-cli/credential.json (0o600, 7-day TTL)

WBI Signature

Some Bilibili endpoints require a WBI request signature (a per-request HMAC-like parameter). Use src/client/wbi.rs:

let (img_key, sub_key) = fetch_wbi_keys(cred).await?;
let params = sign_params(vec![("bvid".to_string(), bvid)], &img_key, &sub_key);
req = req.query(&params);

Known endpoints needing WBI: /x/web-interface/view/conclusion/get

Output & Terminal

• Status/errors → stderr with console::style
• Data → stdout as table (comfy-table) or JSON/YAML
• Counts ≥ 10000 → "X.X万" format

Quality Gate (run before every commit)

cargo build && cargo clippy -- -D warnings && cargo fmt --check && cargo test

References

• All CLI commands & options: See references/commands.md
• API endpoints & payloads: See references/api.md
• Full project spec: PRD.md in project root
• Implementation conventions: CLAUDE.md in project root