// OpenAI 数据模型

use serde::{Deserialize, Serialize};
use serde_json::Value;

#[derive(Debug, Clone, Serialize, Deserialize)]
pub struct OpenAIRequest {
    pub model: String,
    #[serde(default)]
    pub messages: Vec<OpenAIMessage>,
    #[serde(default)]
    pub prompt: Option<String>,
    #[serde(default)]
    pub stream: bool,
    #[serde(rename = "max_tokens")]
    pub max_tokens: Option<u32>,
    pub temperature: Option<f32>,
    #[serde(rename = "top_p")]
    pub top_p: Option<f32>,
    pub stop: Option<Value>,
    pub response_format: Option<ResponseFormat>,
    #[serde(default)]
    pub tools: Option<Vec<Value>>,
    #[serde(rename = "tool_choice")]
    pub tool_choice: Option<Value>,
    #[serde(rename = "parallel_tool_calls")]
    pub parallel_tool_calls: Option<bool>,
    // Codex proprietary fields
    pub instructions: Option<String>,
    pub input: Option<Value>,
}

#[derive(Debug, Clone, Serialize, Deserialize)]
pub struct ResponseFormat {
    pub r#type: String,
}

#[derive(Debug, Clone, Serialize, Deserialize, PartialEq, Eq)]
#[serde(untagged)]
pub enum OpenAIContent {
    String(String),
    Array(Vec<OpenAIContentBlock>),
}

#[derive(Debug, Clone, Serialize, Deserialize, PartialEq, Eq)]
#[serde(tag = "type")]
pub enum OpenAIContentBlock {
    #[serde(rename = "text")]
    Text {
        text: String,
    },
    #[serde(rename = "image_url")]
    ImageUrl {
        image_url: OpenAIImageUrl,
    },
}

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

#[derive(Debug, Clone, Serialize, Deserialize)]
pub struct OpenAIMessage {
    pub role: String,
    #[serde(skip_serializing_if = "Option::is_none")]
    pub content: Option<OpenAIContent>,
    #[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>,
    #[serde(skip_serializing_if = "Option::is_none")]
    pub name: Option<String>,
}

#[derive(Debug, Clone, Serialize, Deserialize)]
pub struct ToolCall {
    pub id: String,
    pub r#type: String,
    pub function: ToolFunction,
}

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

#[derive(Debug, Clone, Serialize, Deserialize)]
pub struct OpenAIResponse {
    pub id: String,
    pub object: String,
    pub created: u64,
    pub model: String,
    pub choices: Vec<Choice>,
}

#[derive(Debug, Clone, Serialize, Deserialize)]
pub struct Choice {
    pub index: u32,
    pub message: OpenAIMessage,
    pub finish_reason: Option<String>,
}