j-cli 12.9.44

A fast CLI tool for alias management, daily reports, and productivity
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use serde::{Deserialize, Serialize};

// ── Request types ──

#[derive(Debug, Clone, Copy, PartialEq, Eq, Serialize, Deserialize)]
#[serde(rename_all = "lowercase")]
pub enum Role {
    System,
    User,
    Assistant,
    Tool,
}

/// Message content: simple text or multimodal parts
#[derive(Debug, Clone, Serialize, Deserialize)]
#[serde(untagged)]
pub enum Content {
    Text(String),
    Parts(Vec<ContentPart>),
}

#[derive(Debug, Clone, Serialize, Deserialize)]
#[serde(tag = "type", rename_all = "snake_case")]
pub enum ContentPart {
    Text { text: String },
    ImageUrl { image_url: ImageUrl },
}

#[derive(Debug, Clone, Serialize, Deserialize)]
pub struct ImageUrl {
    pub url: String,
    #[serde(skip_serializing_if = "Option::is_none")]
    pub detail: Option<String>,
}

/// Flat message — single struct, no per-role variants
#[derive(Debug, Clone, Serialize, Deserialize)]
pub struct Message {
    pub role: Role,
    #[serde(skip_serializing_if = "Option::is_none")]
    pub content: Option<Content>,
    #[serde(skip_serializing_if = "Option::is_none")]
    pub name: Option<String>,
    #[serde(skip_serializing_if = "Option::is_none")]
    pub tool_calls: Option<Vec<ToolCall>>,
    #[serde(skip_serializing_if = "Option::is_none")]
    pub tool_call_id: Option<String>,
}

#[derive(Debug, Clone, Serialize, Deserialize)]
pub struct ToolCall {
    pub id: String,
    #[serde(rename = "type")]
    pub call_type: String,
    pub function: FunctionCall,
}

#[derive(Debug, Clone, Serialize, Deserialize)]
pub struct FunctionCall {
    pub name: String,
    pub arguments: String,
}

/// Tool definition for request
#[derive(Debug, Clone, Serialize, Deserialize)]
pub struct ToolDefinition {
    #[serde(rename = "type")]
    pub tool_type: String,
    pub function: FunctionObject,
}

#[derive(Debug, Clone, Serialize, Deserialize)]
pub struct FunctionObject {
    pub name: String,
    #[serde(skip_serializing_if = "Option::is_none")]
    pub description: Option<String>,
    #[serde(skip_serializing_if = "Option::is_none")]
    pub parameters: Option<serde_json::Value>,
    #[serde(skip_serializing_if = "Option::is_none")]
    pub strict: Option<bool>,
}

/// Chat completion request
#[derive(Debug, Clone, Serialize)]
pub struct ChatRequest {
    pub model: String,
    pub messages: Vec<Message>,
    #[serde(skip_serializing_if = "Option::is_none")]
    pub tools: Option<Vec<ToolDefinition>>,
    #[serde(skip_serializing_if = "Option::is_none")]
    pub stream: Option<bool>,
    #[serde(skip_serializing_if = "Option::is_none")]
    pub max_tokens: Option<u32>,
    #[serde(flatten)]
    pub extra: serde_json::Map<String, serde_json::Value>,
}

// ── Response types (non-streaming) ──

#[derive(Debug, Clone, Deserialize)]
pub struct ChatResponse {
    pub choices: Vec<Choice>,
}

#[derive(Debug, Clone, Deserialize)]
pub struct Choice {
    pub message: ResponseMessage,
    pub finish_reason: Option<String>,
}

#[derive(Debug, Clone, Deserialize)]
#[allow(dead_code)]
pub struct ResponseMessage {
    pub content: Option<String>,
    pub reasoning_content: Option<String>,
    pub tool_calls: Option<Vec<ToolCall>>,
}

// ── Streaming response types ──

#[derive(Debug, Clone, Deserialize)]
pub struct ChatStreamChunk {
    pub choices: Vec<StreamChoice>,
}

#[derive(Debug, Clone, Deserialize)]
pub struct StreamChoice {
    #[serde(default)]
    pub index: u32,
    pub delta: Delta,
    pub finish_reason: Option<String>,
}

#[derive(Debug, Clone, Deserialize)]
#[allow(dead_code)]
pub struct Delta {
    pub role: Option<Role>,
    pub content: Option<String>,
    pub reasoning_content: Option<String>,
    pub tool_calls: Option<Vec<DeltaToolCall>>,
}

#[derive(Debug, Clone, Deserialize)]
pub struct DeltaToolCall {
    #[serde(default)]
    pub index: u32,
    #[serde(default)]
    pub id: Option<String>,
    pub function: Option<DeltaFunction>,
}

#[derive(Debug, Clone, Deserialize)]
pub struct DeltaFunction {
    pub name: Option<String>,
    pub arguments: Option<String>,
}

// ── Finish reason helpers ──

#[allow(dead_code)]
impl Choice {
    pub fn is_tool_calls(&self) -> bool {
        self.finish_reason.as_deref() == Some("tool_calls")
    }
}

#[allow(dead_code)]
impl StreamChoice {
    pub fn is_tool_calls(&self) -> bool {
        self.finish_reason.as_deref() == Some("tool_calls")
    }
}