use std::collections::HashMap;
use std::path::PathBuf;

use crate::protocol::common::AuthMode;
use codex_protocol::ConversationId;
use codex_protocol::account::PlanType;
use codex_protocol::approvals::SandboxCommandAssessment as CoreSandboxCommandAssessment;
use codex_protocol::config_types::ReasoningEffort;
use codex_protocol::config_types::ReasoningSummary;
use codex_protocol::items::AgentMessageContent as CoreAgentMessageContent;
use codex_protocol::items::TurnItem as CoreTurnItem;
use codex_protocol::models::ResponseItem;
use codex_protocol::parse_command::ParsedCommand as CoreParsedCommand;
use codex_protocol::protocol::CreditsSnapshot as CoreCreditsSnapshot;
use codex_protocol::protocol::RateLimitSnapshot as CoreRateLimitSnapshot;
use codex_protocol::protocol::RateLimitWindow as CoreRateLimitWindow;
use codex_protocol::user_input::UserInput as CoreUserInput;
use mcp_types::ContentBlock as McpContentBlock;
use schemars::JsonSchema;
use serde::Deserialize;
use serde::Serialize;
use serde_json::Value as JsonValue;
use ts_rs::TS;

// Macro to declare a camelCased API v2 enum mirroring a core enum which
// tends to use either snake_case or kebab-case.
macro_rules! v2_enum_from_core {
    (
        pub enum $Name:ident from $Src:path { $( $Variant:ident ),+ $(,)? }
    ) => {
        #[derive(Serialize, Deserialize, Debug, Clone, Copy, PartialEq, Eq, JsonSchema, TS)]
        #[serde(rename_all = "camelCase")]
        #[ts(export_to = "v2/")]
        pub enum $Name { $( $Variant ),+ }

        impl $Name {
            pub fn to_core(self) -> $Src {
                match self { $( $Name::$Variant => <$Src>::$Variant ),+ }
            }
        }

        impl From<$Src> for $Name {
            fn from(value: $Src) -> Self {
                match value { $( <$Src>::$Variant => $Name::$Variant ),+ }
            }
        }
    };
}

v2_enum_from_core!(
    pub enum AskForApproval from codex_protocol::protocol::AskForApproval {
        UnlessTrusted, OnFailure, OnRequest, Never
    }
);

v2_enum_from_core!(
    pub enum SandboxMode from codex_protocol::config_types::SandboxMode {
        ReadOnly, WorkspaceWrite, DangerFullAccess
    }
);

v2_enum_from_core!(
    pub enum CommandRiskLevel from codex_protocol::approvals::SandboxRiskLevel {
        Low,
        Medium,
        High
    }
);

#[derive(Serialize, Deserialize, Debug, Clone, PartialEq, Eq, JsonSchema, TS)]
#[serde(rename_all = "camelCase")]
#[ts(export_to = "v2/")]
pub enum ApprovalDecision {
    Accept,
    Decline,
    Cancel,
}

#[derive(Serialize, Deserialize, Debug, Clone, PartialEq, Eq, JsonSchema, TS)]
#[serde(tag = "type", rename_all = "camelCase")]
#[ts(tag = "type")]
#[ts(export_to = "v2/")]
pub enum SandboxPolicy {
    DangerFullAccess,
    ReadOnly,
    #[serde(rename_all = "camelCase")]
    #[ts(rename_all = "camelCase")]
    WorkspaceWrite {
        #[serde(default)]
        writable_roots: Vec<PathBuf>,
        #[serde(default)]
        network_access: bool,
        #[serde(default)]
        exclude_tmpdir_env_var: bool,
        #[serde(default)]
        exclude_slash_tmp: bool,
    },
}

impl SandboxPolicy {
    pub fn to_core(&self) -> codex_protocol::protocol::SandboxPolicy {
        match self {
            SandboxPolicy::DangerFullAccess => {
                codex_protocol::protocol::SandboxPolicy::DangerFullAccess
            }
            SandboxPolicy::ReadOnly => codex_protocol::protocol::SandboxPolicy::ReadOnly,
            SandboxPolicy::WorkspaceWrite {
                writable_roots,
                network_access,
                exclude_tmpdir_env_var,
                exclude_slash_tmp,
            } => codex_protocol::protocol::SandboxPolicy::WorkspaceWrite {
                writable_roots: writable_roots.clone(),
                network_access: *network_access,
                exclude_tmpdir_env_var: *exclude_tmpdir_env_var,
                exclude_slash_tmp: *exclude_slash_tmp,
            },
        }
    }
}

impl From<codex_protocol::protocol::SandboxPolicy> for SandboxPolicy {
    fn from(value: codex_protocol::protocol::SandboxPolicy) -> Self {
        match value {
            codex_protocol::protocol::SandboxPolicy::DangerFullAccess => {
                SandboxPolicy::DangerFullAccess
            }
            codex_protocol::protocol::SandboxPolicy::ReadOnly => SandboxPolicy::ReadOnly,
            codex_protocol::protocol::SandboxPolicy::WorkspaceWrite {
                writable_roots,
                network_access,
                exclude_tmpdir_env_var,
                exclude_slash_tmp,
            } => SandboxPolicy::WorkspaceWrite {
                writable_roots,
                network_access,
                exclude_tmpdir_env_var,
                exclude_slash_tmp,
            },
        }
    }
}

#[derive(Serialize, Deserialize, Debug, Clone, PartialEq, JsonSchema, TS)]
#[serde(rename_all = "camelCase")]
#[ts(export_to = "v2/")]
pub struct SandboxCommandAssessment {
    pub description: String,
    pub risk_level: CommandRiskLevel,
}

impl SandboxCommandAssessment {
    pub fn into_core(self) -> CoreSandboxCommandAssessment {
        CoreSandboxCommandAssessment {
            description: self.description,
            risk_level: self.risk_level.to_core(),
        }
    }
}

impl From<CoreSandboxCommandAssessment> for SandboxCommandAssessment {
    fn from(value: CoreSandboxCommandAssessment) -> Self {
        Self {
            description: value.description,
            risk_level: CommandRiskLevel::from(value.risk_level),
        }
    }
}

#[derive(Serialize, Deserialize, Debug, Clone, PartialEq, JsonSchema, TS)]
#[serde(tag = "type", rename_all = "camelCase")]
#[ts(tag = "type")]
#[ts(export_to = "v2/")]
pub enum CommandAction {
    Read {
        command: String,
        name: String,
        path: PathBuf,
    },
    ListFiles {
        command: String,
        path: Option<String>,
    },
    Search {
        command: String,
        query: Option<String>,
        path: Option<String>,
    },
    Unknown {
        command: String,
    },
}

impl CommandAction {
    pub fn into_core(self) -> CoreParsedCommand {
        match self {
            CommandAction::Read {
                command: cmd,
                name,
                path,
            } => CoreParsedCommand::Read { cmd, name, path },
            CommandAction::ListFiles { command: cmd, path } => {
                CoreParsedCommand::ListFiles { cmd, path }
            }
            CommandAction::Search {
                command: cmd,
                query,
                path,
            } => CoreParsedCommand::Search { cmd, query, path },
            CommandAction::Unknown { command: cmd } => CoreParsedCommand::Unknown { cmd },
        }
    }
}

impl From<CoreParsedCommand> for CommandAction {
    fn from(value: CoreParsedCommand) -> Self {
        match value {
            CoreParsedCommand::Read { cmd, name, path } => CommandAction::Read {
                command: cmd,
                name,
                path,
            },
            CoreParsedCommand::ListFiles { cmd, path } => {
                CommandAction::ListFiles { command: cmd, path }
            }
            CoreParsedCommand::Search { cmd, query, path } => CommandAction::Search {
                command: cmd,
                query,
                path,
            },
            CoreParsedCommand::Unknown { cmd } => CommandAction::Unknown { command: cmd },
        }
    }
}

#[derive(Serialize, Deserialize, Debug, Clone, PartialEq, JsonSchema, TS)]
#[serde(tag = "type", rename_all = "camelCase")]
#[ts(tag = "type")]
#[ts(export_to = "v2/")]
pub enum Account {
    #[serde(rename = "apiKey", rename_all = "camelCase")]
    #[ts(rename = "apiKey", rename_all = "camelCase")]
    ApiKey {},

    #[serde(rename = "chatgpt", rename_all = "camelCase")]
    #[ts(rename = "chatgpt", rename_all = "camelCase")]
    Chatgpt { email: String, plan_type: PlanType },
}

#[derive(Serialize, Deserialize, Debug, Clone, PartialEq, JsonSchema, TS)]
#[serde(tag = "type")]
#[ts(tag = "type")]
#[ts(export_to = "v2/")]
pub enum LoginAccountParams {
    #[serde(rename = "apiKey", rename_all = "camelCase")]
    #[ts(rename = "apiKey", rename_all = "camelCase")]
    ApiKey {
        #[serde(rename = "apiKey")]
        #[ts(rename = "apiKey")]
        api_key: String,
    },
    #[serde(rename = "chatgpt")]
    #[ts(rename = "chatgpt")]
    Chatgpt,
}

#[derive(Serialize, Deserialize, Debug, Clone, PartialEq, JsonSchema, TS)]
#[serde(tag = "type", rename_all = "camelCase")]
#[ts(tag = "type")]
#[ts(export_to = "v2/")]
pub enum LoginAccountResponse {
    #[serde(rename = "apiKey", rename_all = "camelCase")]
    #[ts(rename = "apiKey", rename_all = "camelCase")]
    ApiKey {},
    #[serde(rename = "chatgpt", rename_all = "camelCase")]
    #[ts(rename = "chatgpt", rename_all = "camelCase")]
    Chatgpt {
        // Use plain String for identifiers to avoid TS/JSON Schema quirks around uuid-specific types.
        // Convert to/from UUIDs at the application layer as needed.
        login_id: String,
        /// URL the client should open in a browser to initiate the OAuth flow.
        auth_url: String,
    },
}

#[derive(Serialize, Deserialize, Debug, Clone, PartialEq, JsonSchema, TS)]
#[serde(rename_all = "camelCase")]
#[ts(export_to = "v2/")]
pub struct CancelLoginAccountParams {
    pub login_id: String,
}

#[derive(Serialize, Deserialize, Debug, Clone, PartialEq, JsonSchema, TS)]
#[serde(rename_all = "camelCase")]
#[ts(export_to = "v2/")]
pub struct CancelLoginAccountResponse {}

#[derive(Serialize, Deserialize, Debug, Clone, PartialEq, JsonSchema, TS)]
#[serde(rename_all = "camelCase")]
#[ts(export_to = "v2/")]
pub struct LogoutAccountResponse {}

#[derive(Serialize, Deserialize, Debug, Clone, PartialEq, JsonSchema, TS)]
#[serde(rename_all = "camelCase")]
#[ts(export_to = "v2/")]
pub struct GetAccountRateLimitsResponse {
    pub rate_limits: RateLimitSnapshot,
}

#[derive(Serialize, Deserialize, Debug, Clone, PartialEq, JsonSchema, TS)]
#[serde(rename_all = "camelCase")]
#[ts(export_to = "v2/")]
pub struct GetAccountParams {
    #[serde(default)]
    pub refresh_token: bool,
}

#[derive(Serialize, Deserialize, Debug, Clone, PartialEq, JsonSchema, TS)]
#[serde(rename_all = "camelCase")]
#[ts(export_to = "v2/")]
pub struct GetAccountResponse {
    pub account: Option<Account>,
    pub requires_openai_auth: bool,
}

#[derive(Serialize, Deserialize, Debug, Clone, PartialEq, Default, JsonSchema, TS)]
#[serde(rename_all = "camelCase")]
#[ts(export_to = "v2/")]
pub struct ModelListParams {
    /// Opaque pagination cursor returned by a previous call.
    pub cursor: Option<String>,
    /// Optional page size; defaults to a reasonable server-side value.
    pub limit: Option<u32>,
}

#[derive(Serialize, Deserialize, Debug, Clone, PartialEq, JsonSchema, TS)]
#[serde(rename_all = "camelCase")]
#[ts(export_to = "v2/")]
pub struct Model {
    pub id: String,
    pub model: String,
    pub display_name: String,
    pub description: String,
    pub supported_reasoning_efforts: Vec<ReasoningEffortOption>,
    pub default_reasoning_effort: ReasoningEffort,
    // Only one model should be marked as default.
    pub is_default: bool,
}

#[derive(Serialize, Deserialize, Debug, Clone, PartialEq, JsonSchema, TS)]
#[serde(rename_all = "camelCase")]
#[ts(export_to = "v2/")]
pub struct ReasoningEffortOption {
    pub reasoning_effort: ReasoningEffort,
    pub description: String,
}

#[derive(Serialize, Deserialize, Debug, Clone, PartialEq, JsonSchema, TS)]
#[serde(rename_all = "camelCase")]
#[ts(export_to = "v2/")]
pub struct ModelListResponse {
    pub data: Vec<Model>,
    /// Opaque cursor to pass to the next call to continue after the last item.
    /// If None, there are no more items to return.
    pub next_cursor: Option<String>,
}

#[derive(Serialize, Deserialize, Debug, Clone, PartialEq, JsonSchema, TS)]
#[serde(rename_all = "camelCase")]
#[ts(export_to = "v2/")]
pub struct FeedbackUploadParams {
    pub classification: String,
    pub reason: Option<String>,
    pub conversation_id: Option<ConversationId>,
    pub include_logs: bool,
}

#[derive(Serialize, Deserialize, Debug, Clone, PartialEq, JsonSchema, TS)]
#[serde(rename_all = "camelCase")]
#[ts(export_to = "v2/")]
pub struct FeedbackUploadResponse {
    pub thread_id: String,
}

// === Threads, Turns, and Items ===
// Thread APIs
#[derive(Serialize, Deserialize, Debug, Clone, PartialEq, Default, JsonSchema, TS)]
#[serde(rename_all = "camelCase")]
#[ts(export_to = "v2/")]
pub struct ThreadStartParams {
    pub model: Option<String>,
    pub model_provider: Option<String>,
    pub cwd: Option<String>,
    pub approval_policy: Option<AskForApproval>,
    pub sandbox: Option<SandboxMode>,
    pub config: Option<HashMap<String, JsonValue>>,
    pub base_instructions: Option<String>,
    pub developer_instructions: Option<String>,
}

#[derive(Serialize, Deserialize, Debug, Clone, PartialEq, JsonSchema, TS)]
#[serde(rename_all = "camelCase")]
#[ts(export_to = "v2/")]
pub struct ThreadStartResponse {
    pub thread: Thread,
    pub model: String,
    pub model_provider: String,
    pub cwd: PathBuf,
    pub approval_policy: AskForApproval,
    pub sandbox: SandboxPolicy,
    pub reasoning_effort: Option<ReasoningEffort>,
}

#[derive(Serialize, Deserialize, Debug, Default, Clone, PartialEq, JsonSchema, TS)]
#[serde(rename_all = "camelCase")]
#[ts(export_to = "v2/")]
/// There are three ways to resume a thread:
/// 1. By thread_id: load the thread from disk by thread_id and resume it.
/// 2. By history: instantiate the thread from memory and resume it.
/// 3. By path: load the thread from disk by path and resume it.
///
/// The precedence is: history > path > thread_id.
/// If using history or path, the thread_id param will be ignored.
///
/// Prefer using thread_id whenever possible.
pub struct ThreadResumeParams {
    pub thread_id: String,

    /// [UNSTABLE] FOR CODEX CLOUD - DO NOT USE.
    /// If specified, the thread will be resumed with the provided history
    /// instead of loaded from disk.
    pub history: Option<Vec<ResponseItem>>,

    /// [UNSTABLE] Specify the rollout path to resume from.
    /// If specified, the thread_id param will be ignored.
    pub path: Option<PathBuf>,

    /// Configuration overrides for the resumed thread, if any.
    pub model: Option<String>,
    pub model_provider: Option<String>,
    pub cwd: Option<String>,
    pub approval_policy: Option<AskForApproval>,
    pub sandbox: Option<SandboxMode>,
    pub config: Option<HashMap<String, serde_json::Value>>,
    pub base_instructions: Option<String>,
    pub developer_instructions: Option<String>,
}

#[derive(Serialize, Deserialize, Debug, Clone, PartialEq, JsonSchema, TS)]
#[serde(rename_all = "camelCase")]
#[ts(export_to = "v2/")]
pub struct ThreadResumeResponse {
    pub thread: Thread,
    pub model: String,
    pub model_provider: String,
    pub cwd: PathBuf,
    pub approval_policy: AskForApproval,
    pub sandbox: SandboxPolicy,
    pub reasoning_effort: Option<ReasoningEffort>,
}

#[derive(Serialize, Deserialize, Debug, Clone, PartialEq, JsonSchema, TS)]
#[serde(rename_all = "camelCase")]
#[ts(export_to = "v2/")]
pub struct ThreadArchiveParams {
    pub thread_id: String,
}

#[derive(Serialize, Deserialize, Debug, Clone, PartialEq, JsonSchema, TS)]
#[serde(rename_all = "camelCase")]
#[ts(export_to = "v2/")]
pub struct ThreadArchiveResponse {}

#[derive(Serialize, Deserialize, Debug, Clone, PartialEq, JsonSchema, TS)]
#[serde(rename_all = "camelCase")]
#[ts(export_to = "v2/")]
pub struct ThreadListParams {
    /// Opaque pagination cursor returned by a previous call.
    pub cursor: Option<String>,
    /// Optional page size; defaults to a reasonable server-side value.
    pub limit: Option<u32>,
    /// Optional provider filter; when set, only sessions recorded under these
    /// providers are returned. When present but empty, includes all providers.
    pub model_providers: Option<Vec<String>>,
}

#[derive(Serialize, Deserialize, Debug, Clone, PartialEq, JsonSchema, TS)]
#[serde(rename_all = "camelCase")]
#[ts(export_to = "v2/")]
pub struct ThreadListResponse {
    pub data: Vec<Thread>,
    /// Opaque cursor to pass to the next call to continue after the last item.
    /// if None, there are no more items to return.
    pub next_cursor: Option<String>,
}

#[derive(Serialize, Deserialize, Debug, Clone, PartialEq, JsonSchema, TS)]
#[serde(rename_all = "camelCase")]
#[ts(export_to = "v2/")]
pub struct ThreadCompactParams {
    pub thread_id: String,
}

#[derive(Serialize, Deserialize, Debug, Clone, PartialEq, JsonSchema, TS)]
#[serde(rename_all = "camelCase")]
#[ts(export_to = "v2/")]
pub struct ThreadCompactResponse {}

#[derive(Serialize, Deserialize, Debug, Clone, PartialEq, JsonSchema, TS)]
#[serde(rename_all = "camelCase")]
#[ts(export_to = "v2/")]
pub struct Thread {
    pub id: String,
    /// Usually the first user message in the thread, if available.
    pub preview: String,
    pub model_provider: String,
    /// Unix timestamp (in seconds) when the thread was created.
    pub created_at: i64,
    /// [UNSTABLE] Path to the thread on disk.
    pub path: PathBuf,
    /// Only populated on a `thread/resume` response.
    /// For all other responses and notifications returning a Thread,
    /// the turns field will be an empty list.
    pub turns: Vec<Turn>,
}

#[derive(Serialize, Deserialize, Debug, Clone, PartialEq, JsonSchema, TS)]
#[serde(rename_all = "camelCase")]
#[ts(export_to = "v2/")]
pub struct AccountUpdatedNotification {
    pub auth_mode: Option<AuthMode>,
}

#[derive(Serialize, Deserialize, Debug, Clone, PartialEq, JsonSchema, TS)]
#[serde(rename_all = "camelCase")]
#[ts(export_to = "v2/")]
pub struct Turn {
    pub id: String,
    /// Only populated on a `thread/resume` response.
    /// For all other responses and notifications returning a Turn,
    /// the items field will be an empty list.
    pub items: Vec<ThreadItem>,
    #[serde(flatten)]
    pub status: TurnStatus,
}

#[derive(Serialize, Deserialize, Debug, Clone, PartialEq, JsonSchema, TS)]
#[serde(rename_all = "camelCase")]
#[ts(export_to = "v2/")]
pub struct TurnError {
    pub message: String,
}

#[derive(Serialize, Deserialize, Debug, Clone, PartialEq, JsonSchema, TS)]
#[serde(tag = "status", rename_all = "camelCase")]
#[ts(tag = "status", export_to = "v2/")]
pub enum TurnStatus {
    Completed,
    Interrupted,
    Failed { error: TurnError },
    InProgress,
}

// Turn APIs
#[derive(Serialize, Deserialize, Debug, Default, Clone, PartialEq, JsonSchema, TS)]
#[serde(rename_all = "camelCase")]
#[ts(export_to = "v2/")]
pub struct TurnStartParams {
    pub thread_id: String,
    pub input: Vec<UserInput>,
    /// Override the working directory for this turn and subsequent turns.
    pub cwd: Option<PathBuf>,
    /// Override the approval policy for this turn and subsequent turns.
    pub approval_policy: Option<AskForApproval>,
    /// Override the sandbox policy for this turn and subsequent turns.
    pub sandbox_policy: Option<SandboxPolicy>,
    /// Override the model for this turn and subsequent turns.
    pub model: Option<String>,
    /// Override the reasoning effort for this turn and subsequent turns.
    pub effort: Option<ReasoningEffort>,
    /// Override the reasoning summary for this turn and subsequent turns.
    pub summary: Option<ReasoningSummary>,
}

#[derive(Serialize, Deserialize, Debug, Clone, PartialEq, JsonSchema, TS)]
#[serde(rename_all = "camelCase")]
#[ts(export_to = "v2/")]
pub struct ReviewStartParams {
    pub thread_id: String,
    pub target: ReviewTarget,

    /// When true, also append the final review message to the original thread.
    #[serde(default)]
    pub append_to_original_thread: bool,
}

#[derive(Serialize, Deserialize, Debug, Clone, PartialEq, JsonSchema, TS)]
#[serde(tag = "type", rename_all = "camelCase")]
#[ts(tag = "type", export_to = "v2/")]
pub enum ReviewTarget {
    /// Review the working tree: staged, unstaged, and untracked files.
    UncommittedChanges,

    /// Review changes between the current branch and the given base branch.
    #[serde(rename_all = "camelCase")]
    #[ts(rename_all = "camelCase")]
    BaseBranch { branch: String },

    /// Review the changes introduced by a specific commit.
    #[serde(rename_all = "camelCase")]
    #[ts(rename_all = "camelCase")]
    Commit {
        sha: String,
        /// Optional human-readable label (e.g., commit subject) for UIs.
        title: Option<String>,
    },

    /// Arbitrary instructions, equivalent to the old free-form prompt.
    #[serde(rename_all = "camelCase")]
    #[ts(rename_all = "camelCase")]
    Custom { instructions: String },
}

#[derive(Serialize, Deserialize, Debug, Clone, PartialEq, JsonSchema, TS)]
#[serde(rename_all = "camelCase")]
#[ts(export_to = "v2/")]
pub struct TurnStartResponse {
    pub turn: Turn,
}

#[derive(Serialize, Deserialize, Debug, Clone, PartialEq, JsonSchema, TS)]
#[serde(rename_all = "camelCase")]
#[ts(export_to = "v2/")]
pub struct TurnInterruptParams {
    pub thread_id: String,
    pub turn_id: String,
}

#[derive(Serialize, Deserialize, Debug, Clone, PartialEq, JsonSchema, TS)]
#[serde(rename_all = "camelCase")]
#[ts(export_to = "v2/")]
pub struct TurnInterruptResponse {}

// User input types
#[derive(Serialize, Deserialize, Debug, Clone, PartialEq, JsonSchema, TS)]
#[serde(tag = "type", rename_all = "camelCase")]
#[ts(tag = "type")]
#[ts(export_to = "v2/")]
pub enum UserInput {
    Text { text: String },
    Image { url: String },
    LocalImage { path: PathBuf },
}

impl UserInput {
    pub fn into_core(self) -> CoreUserInput {
        match self {
            UserInput::Text { text } => CoreUserInput::Text { text },
            UserInput::Image { url } => CoreUserInput::Image { image_url: url },
            UserInput::LocalImage { path } => CoreUserInput::LocalImage { path },
        }
    }
}

impl From<CoreUserInput> for UserInput {
    fn from(value: CoreUserInput) -> Self {
        match value {
            CoreUserInput::Text { text } => UserInput::Text { text },
            CoreUserInput::Image { image_url } => UserInput::Image { url: image_url },
            CoreUserInput::LocalImage { path } => UserInput::LocalImage { path },
            _ => unreachable!("unsupported user input variant"),
        }
    }
}

#[derive(Serialize, Deserialize, Debug, Clone, PartialEq, JsonSchema, TS)]
#[serde(tag = "type", rename_all = "camelCase")]
#[ts(tag = "type")]
#[ts(export_to = "v2/")]
pub enum ThreadItem {
    #[serde(rename_all = "camelCase")]
    #[ts(rename_all = "camelCase")]
    UserMessage { id: String, content: Vec<UserInput> },
    #[serde(rename_all = "camelCase")]
    #[ts(rename_all = "camelCase")]
    AgentMessage { id: String, text: String },
    #[serde(rename_all = "camelCase")]
    #[ts(rename_all = "camelCase")]
    Reasoning {
        id: String,
        #[serde(default)]
        summary: Vec<String>,
        #[serde(default)]
        content: Vec<String>,
    },
    #[serde(rename_all = "camelCase")]
    #[ts(rename_all = "camelCase")]
    CommandExecution {
        id: String,
        /// The command to be executed.
        command: String,
        /// The command's working directory.
        cwd: PathBuf,
        status: CommandExecutionStatus,
        /// A best-effort parsing of the command to understand the action(s) it will perform.
        /// This returns a list of CommandAction objects because a single shell command may
        /// be composed of many commands piped together.
        command_actions: Vec<CommandAction>,
        /// The command's output, aggregated from stdout and stderr.
        aggregated_output: Option<String>,
        /// The command's exit code.
        exit_code: Option<i32>,
        /// The duration of the command execution in milliseconds.
        duration_ms: Option<i64>,
    },
    #[serde(rename_all = "camelCase")]
    #[ts(rename_all = "camelCase")]
    FileChange {
        id: String,
        changes: Vec<FileUpdateChange>,
        status: PatchApplyStatus,
    },
    #[serde(rename_all = "camelCase")]
    #[ts(rename_all = "camelCase")]
    McpToolCall {
        id: String,
        server: String,
        tool: String,
        status: McpToolCallStatus,
        arguments: JsonValue,
        result: Option<McpToolCallResult>,
        error: Option<McpToolCallError>,
    },
    #[serde(rename_all = "camelCase")]
    #[ts(rename_all = "camelCase")]
    WebSearch { id: String, query: String },
    #[serde(rename_all = "camelCase")]
    #[ts(rename_all = "camelCase")]
    TodoList { id: String, items: Vec<TodoItem> },
    #[serde(rename_all = "camelCase")]
    #[ts(rename_all = "camelCase")]
    ImageView { id: String, path: String },
    #[serde(rename_all = "camelCase")]
    #[ts(rename_all = "camelCase")]
    CodeReview { id: String, review: String },
}

impl From<CoreTurnItem> for ThreadItem {
    fn from(value: CoreTurnItem) -> Self {
        match value {
            CoreTurnItem::UserMessage(user) => ThreadItem::UserMessage {
                id: user.id,
                content: user.content.into_iter().map(UserInput::from).collect(),
            },
            CoreTurnItem::AgentMessage(agent) => {
                let text = agent
                    .content
                    .into_iter()
                    .map(|entry| match entry {
                        CoreAgentMessageContent::Text { text } => text,
                    })
                    .collect::<String>();
                ThreadItem::AgentMessage { id: agent.id, text }
            }
            CoreTurnItem::Reasoning(reasoning) => ThreadItem::Reasoning {
                id: reasoning.id,
                summary: reasoning.summary_text,
                content: reasoning.raw_content,
            },
            CoreTurnItem::WebSearch(search) => ThreadItem::WebSearch {
                id: search.id,
                query: search.query,
            },
        }
    }
}

#[derive(Serialize, Deserialize, Debug, Clone, PartialEq, JsonSchema, TS)]
#[serde(rename_all = "camelCase")]
#[ts(export_to = "v2/")]
pub enum CommandExecutionStatus {
    InProgress,
    Completed,
    Failed,
}

#[derive(Serialize, Deserialize, Debug, Clone, PartialEq, JsonSchema, TS)]
#[serde(rename_all = "camelCase")]
#[ts(export_to = "v2/")]
pub struct FileUpdateChange {
    pub path: String,
    pub kind: PatchChangeKind,
    pub diff: String,
}

#[derive(Serialize, Deserialize, Debug, Clone, PartialEq, JsonSchema, TS)]
#[serde(rename_all = "camelCase")]
#[ts(export_to = "v2/")]
pub enum PatchChangeKind {
    Add,
    Delete,
    Update,
}

#[derive(Serialize, Deserialize, Debug, Clone, PartialEq, JsonSchema, TS)]
#[serde(rename_all = "camelCase")]
#[ts(export_to = "v2/")]
pub enum PatchApplyStatus {
    Completed,
    Failed,
}

#[derive(Serialize, Deserialize, Debug, Clone, PartialEq, JsonSchema, TS)]
#[serde(rename_all = "camelCase")]
#[ts(export_to = "v2/")]
pub enum McpToolCallStatus {
    InProgress,
    Completed,
    Failed,
}

#[derive(Serialize, Deserialize, Debug, Clone, PartialEq, JsonSchema, TS)]
#[serde(rename_all = "camelCase")]
#[ts(export_to = "v2/")]
pub struct McpToolCallResult {
    pub content: Vec<McpContentBlock>,
    pub structured_content: Option<JsonValue>,
}

#[derive(Serialize, Deserialize, Debug, Clone, PartialEq, JsonSchema, TS)]
#[serde(rename_all = "camelCase")]
#[ts(export_to = "v2/")]
pub struct McpToolCallError {
    pub message: String,
}

#[derive(Serialize, Deserialize, Debug, Clone, PartialEq, JsonSchema, TS)]
#[serde(rename_all = "camelCase")]
#[ts(export_to = "v2/")]
pub struct TodoItem {
    pub id: String,
    pub text: String,
    pub completed: bool,
}

// === Server Notifications ===
// Thread/Turn lifecycle notifications and item progress events
#[derive(Serialize, Deserialize, Debug, Clone, PartialEq, JsonSchema, TS)]
#[serde(rename_all = "camelCase")]
#[ts(export_to = "v2/")]
pub struct ThreadStartedNotification {
    pub thread: Thread,
}

#[derive(Serialize, Deserialize, Debug, Clone, PartialEq, JsonSchema, TS)]
#[serde(rename_all = "camelCase")]
#[ts(export_to = "v2/")]
pub struct TurnStartedNotification {
    pub turn: Turn,
}

#[derive(Serialize, Deserialize, Debug, Clone, PartialEq, JsonSchema, TS)]
#[serde(rename_all = "camelCase")]
#[ts(export_to = "v2/")]
pub struct Usage {
    pub input_tokens: i32,
    pub cached_input_tokens: i32,
    pub output_tokens: i32,
}

#[derive(Serialize, Deserialize, Debug, Clone, PartialEq, JsonSchema, TS)]
#[serde(rename_all = "camelCase")]
#[ts(export_to = "v2/")]
pub struct TurnCompletedNotification {
    pub turn: Turn,
}

#[derive(Serialize, Deserialize, Debug, Clone, PartialEq, JsonSchema, TS)]
#[serde(rename_all = "camelCase")]
#[ts(export_to = "v2/")]
pub struct ItemStartedNotification {
    pub item: ThreadItem,
}

#[derive(Serialize, Deserialize, Debug, Clone, PartialEq, JsonSchema, TS)]
#[serde(rename_all = "camelCase")]
#[ts(export_to = "v2/")]
pub struct ItemCompletedNotification {
    pub item: ThreadItem,
}

// Item-specific progress notifications
#[derive(Serialize, Deserialize, Debug, Clone, PartialEq, JsonSchema, TS)]
#[serde(rename_all = "camelCase")]
#[ts(export_to = "v2/")]
pub struct AgentMessageDeltaNotification {
    pub item_id: String,
    pub delta: String,
}

#[derive(Serialize, Deserialize, Debug, Clone, PartialEq, JsonSchema, TS)]
#[serde(rename_all = "camelCase")]
#[ts(export_to = "v2/")]
pub struct ReasoningSummaryTextDeltaNotification {
    pub item_id: String,
    pub delta: String,
    pub summary_index: i64,
}

#[derive(Serialize, Deserialize, Debug, Clone, PartialEq, JsonSchema, TS)]
#[serde(rename_all = "camelCase")]
#[ts(export_to = "v2/")]
pub struct ReasoningSummaryPartAddedNotification {
    pub item_id: String,
    pub summary_index: i64,
}

#[derive(Serialize, Deserialize, Debug, Clone, PartialEq, JsonSchema, TS)]
#[serde(rename_all = "camelCase")]
#[ts(export_to = "v2/")]
pub struct ReasoningTextDeltaNotification {
    pub item_id: String,
    pub delta: String,
    pub content_index: i64,
}

#[derive(Serialize, Deserialize, Debug, Clone, PartialEq, JsonSchema, TS)]
#[serde(rename_all = "camelCase")]
#[ts(export_to = "v2/")]
pub struct CommandExecutionOutputDeltaNotification {
    pub item_id: String,
    pub delta: String,
}

#[derive(Serialize, Deserialize, Debug, Clone, PartialEq, JsonSchema, TS)]
#[serde(rename_all = "camelCase")]
#[ts(export_to = "v2/")]
pub struct McpToolCallProgressNotification {
    pub item_id: String,
    pub message: String,
}

#[derive(Serialize, Deserialize, Debug, Clone, PartialEq, JsonSchema, TS)]
#[serde(rename_all = "camelCase")]
#[ts(export_to = "v2/")]
pub struct WindowsWorldWritableWarningNotification {
    pub sample_paths: Vec<String>,
    pub extra_count: usize,
    pub failed_scan: bool,
}

#[derive(Serialize, Deserialize, Debug, Clone, PartialEq, JsonSchema, TS)]
#[serde(rename_all = "camelCase")]
#[ts(export_to = "v2/")]
pub struct CommandExecutionRequestApprovalParams {
    pub thread_id: String,
    pub turn_id: String,
    pub item_id: String,
    /// Optional explanatory reason (e.g. request for network access).
    pub reason: Option<String>,
    /// Optional model-provided risk assessment describing the blocked command.
    pub risk: Option<SandboxCommandAssessment>,
}

#[derive(Serialize, Deserialize, Debug, Clone, PartialEq, JsonSchema, TS)]
#[serde(rename_all = "camelCase")]
#[ts(export_to = "v2/")]
pub struct CommandExecutionRequestAcceptSettings {
    /// If true, automatically approve this command for the duration of the session.
    #[serde(default)]
    pub for_session: bool,
}

#[derive(Serialize, Deserialize, Debug, Clone, PartialEq, JsonSchema, TS)]
#[serde(rename_all = "camelCase")]
#[ts(export_to = "v2/")]
pub struct CommandExecutionRequestApprovalResponse {
    pub decision: ApprovalDecision,
    /// Optional approval settings for when the decision is `accept`.
    /// Ignored if the decision is `decline` or `cancel`.
    #[serde(default)]
    pub accept_settings: Option<CommandExecutionRequestAcceptSettings>,
}

#[derive(Serialize, Deserialize, Debug, Clone, PartialEq, JsonSchema, TS)]
#[serde(rename_all = "camelCase")]
#[ts(export_to = "v2/")]
pub struct AccountRateLimitsUpdatedNotification {
    pub rate_limits: RateLimitSnapshot,
}

#[derive(Serialize, Deserialize, Debug, Clone, PartialEq, JsonSchema, TS)]
#[serde(rename_all = "camelCase")]
#[ts(export_to = "v2/")]
pub struct RateLimitSnapshot {
    pub primary: Option<RateLimitWindow>,
    pub secondary: Option<RateLimitWindow>,
    pub credits: Option<CreditsSnapshot>,
}

impl From<CoreRateLimitSnapshot> for RateLimitSnapshot {
    fn from(value: CoreRateLimitSnapshot) -> Self {
        Self {
            primary: value.primary.map(RateLimitWindow::from),
            secondary: value.secondary.map(RateLimitWindow::from),
            credits: value.credits.map(CreditsSnapshot::from),
        }
    }
}

#[derive(Serialize, Deserialize, Debug, Clone, PartialEq, JsonSchema, TS)]
#[serde(rename_all = "camelCase")]
#[ts(export_to = "v2/")]
pub struct RateLimitWindow {
    pub used_percent: i32,
    pub window_duration_mins: Option<i64>,
    pub resets_at: Option<i64>,
}

impl From<CoreRateLimitWindow> for RateLimitWindow {
    fn from(value: CoreRateLimitWindow) -> Self {
        Self {
            used_percent: value.used_percent.round() as i32,
            window_duration_mins: value.window_minutes,
            resets_at: value.resets_at,
        }
    }
}

#[derive(Serialize, Deserialize, Debug, Clone, PartialEq, JsonSchema, TS)]
#[serde(rename_all = "camelCase")]
#[ts(export_to = "v2/")]
pub struct CreditsSnapshot {
    pub has_credits: bool,
    pub unlimited: bool,
    pub balance: Option<String>,
}

impl From<CoreCreditsSnapshot> for CreditsSnapshot {
    fn from(value: CoreCreditsSnapshot) -> Self {
        Self {
            has_credits: value.has_credits,
            unlimited: value.unlimited,
            balance: value.balance,
        }
    }
}

#[derive(Serialize, Deserialize, Debug, Clone, PartialEq, JsonSchema, TS)]
#[serde(rename_all = "camelCase")]
#[ts(export_to = "v2/")]
pub struct AccountLoginCompletedNotification {
    // Use plain String for identifiers to avoid TS/JSON Schema quirks around uuid-specific types.
    // Convert to/from UUIDs at the application layer as needed.
    pub login_id: Option<String>,
    pub success: bool,
    pub error: Option<String>,
}

#[cfg(test)]
mod tests {
    use super::*;
    use codex_protocol::items::AgentMessageContent;
    use codex_protocol::items::AgentMessageItem;
    use codex_protocol::items::ReasoningItem;
    use codex_protocol::items::TurnItem;
    use codex_protocol::items::UserMessageItem;
    use codex_protocol::items::WebSearchItem;
    use codex_protocol::user_input::UserInput as CoreUserInput;
    use pretty_assertions::assert_eq;
    use std::path::PathBuf;

    #[test]
    fn core_turn_item_into_thread_item_converts_supported_variants() {
        let user_item = TurnItem::UserMessage(UserMessageItem {
            id: "user-1".to_string(),
            content: vec![
                CoreUserInput::Text {
                    text: "hello".to_string(),
                },
                CoreUserInput::Image {
                    image_url: "https://example.com/image.png".to_string(),
                },
                CoreUserInput::LocalImage {
                    path: PathBuf::from("local/image.png"),
                },
            ],
        });

        assert_eq!(
            ThreadItem::from(user_item),
            ThreadItem::UserMessage {
                id: "user-1".to_string(),
                content: vec![
                    UserInput::Text {
                        text: "hello".to_string(),
                    },
                    UserInput::Image {
                        url: "https://example.com/image.png".to_string(),
                    },
                    UserInput::LocalImage {
                        path: PathBuf::from("local/image.png"),
                    },
                ],
            }
        );

        let agent_item = TurnItem::AgentMessage(AgentMessageItem {
            id: "agent-1".to_string(),
            content: vec![
                AgentMessageContent::Text {
                    text: "Hello ".to_string(),
                },
                AgentMessageContent::Text {
                    text: "world".to_string(),
                },
            ],
        });

        assert_eq!(
            ThreadItem::from(agent_item),
            ThreadItem::AgentMessage {
                id: "agent-1".to_string(),
                text: "Hello world".to_string(),
            }
        );

        let reasoning_item = TurnItem::Reasoning(ReasoningItem {
            id: "reasoning-1".to_string(),
            summary_text: vec!["line one".to_string(), "line two".to_string()],
            raw_content: vec![],
        });

        assert_eq!(
            ThreadItem::from(reasoning_item),
            ThreadItem::Reasoning {
                id: "reasoning-1".to_string(),
                summary: vec!["line one".to_string(), "line two".to_string()],
                content: vec![],
            }
        );

        let search_item = TurnItem::WebSearch(WebSearchItem {
            id: "search-1".to_string(),
            query: "docs".to_string(),
        });

        assert_eq!(
            ThreadItem::from(search_item),
            ThreadItem::WebSearch {
                id: "search-1".to_string(),
                query: "docs".to_string(),
            }
        );
    }
}