// Package api holds the JSON types shared by the server, the REST client,
// and the CLI. No terminal-emulation types leak in here.
package api

// CreateSessionRequest is the body of POST /sessions.
type CreateSessionRequest struct {
	Command []string          `json:"command,omitempty"`
	Cwd     string            `json:"cwd,omitempty"`
	Env     map[string]string `json:"env,omitempty"`
	Cols    int               `json:"cols,omitempty"`
	Rows    int               `json:"rows,omitempty"`
	Term    string            `json:"term,omitempty"`
}

// SessionInfo describes a session in list/get/create responses.
type SessionInfo struct {
	ID       string   `json:"id"`
	PID      int      `json:"pid"`
	Command  []string `json:"command"`
	Cols     int      `json:"cols"`
	Rows     int      `json:"rows"`
	Title    string   `json:"title"`
	Exited   bool     `json:"exited"`
	ExitCode *int     `json:"exit_code"`
}

// SessionList is the body of GET /sessions.
type SessionList struct {
	Sessions []SessionInfo `json:"sessions"`
}

// InputItem is one element of an input request. Exactly one field must be set.
type InputItem struct {
	Text *string `json:"text,omitempty"`
	Key  *string `json:"key,omitempty"`
	Raw  *string `json:"raw,omitempty"`
}

// InputRequest is the body of POST /sessions/{id}/input.
type InputRequest struct {
	Input []InputItem `json:"input"`
}

// InputResponse reports how many raw bytes were fed to the terminal.
type InputResponse struct {
	Written int `json:"written"`
}

// MouseRequest is the body of POST /sessions/{id}/mouse.
type MouseRequest struct {
	Type      string   `json:"type"`   // press|release|click|move|drag|scroll
	Button    string   `json:"button"` // left|middle|right|wheel-up|wheel-down
	X         int      `json:"x"`      // 0-based cell column
	Y         int      `json:"y"`      // 0-based cell row
	Modifiers []string `json:"modifiers,omitempty"`
}

// ResizeRequest is the body of POST /sessions/{id}/resize.
type ResizeRequest struct {
	Cols int `json:"cols"`
	Rows int `json:"rows"`
}

// Cursor is the cursor part of a screen snapshot. Coordinates are 0-based.
type Cursor struct {
	X       int  `json:"x"`
	Y       int  `json:"y"`
	Visible bool `json:"visible"`
}

// Modes reports the DEC private modes the application has set, so a caller
// knows whether mouse clicks will even be delivered.
type Modes struct {
	Mouse          string `json:"mouse"`           // off|x10|normal|button_event|any_event
	MouseEncoding  string `json:"mouse_encoding"`  // default|sgr
	AppCursorKeys  bool   `json:"app_cursor_keys"` // DECCKM
	BracketedPaste bool   `json:"bracketed_paste"`
}

// Screen is the body of GET /sessions/{id}/screen.
type Screen struct {
	Lines     []string `json:"lines"`
	Cols      int      `json:"cols"`
	Rows      int      `json:"rows"`
	Cursor    Cursor   `json:"cursor"`
	AltScreen bool     `json:"alt_screen"`
	Title     string   `json:"title"`
	Modes     Modes    `json:"modes"`
	Exited    bool     `json:"exited"`
	ExitCode  *int     `json:"exit_code"`
	// Raw is the styled ANSI snapshot, only present with ?format=raw.
	Raw string `json:"raw,omitempty"`
}

// Error is the body of every non-2xx response. For mouse rejections the
// current modes are included so the caller can see why.
type Error struct {
	Error string `json:"error"`
	Modes *Modes `json:"modes,omitempty"`
}