local wez = require 'wezterm'

local bindings = {
  -- Wheel: scroll 1 line per tick
  {
    event = { Down = { streak = 1, button = { WheelUp = 1, }, }, },
    mods = 'NONE',
    action = wez.action.ScrollByLine( -1 ),
  },
  {
    event = { Down = { streak = 1, button = { WheelDown = 1, }, }, },
    mods = 'NONE',
    action = wez.action.ScrollByLine( 1 ),
  },
  -- SHIFT+Wheel: scroll normal-screen scrollback 5 lines
  {
    event = { Down = { streak = 1, button = { WheelUp = 1, }, }, },
    mods = 'SHIFT',
    alt_screen = false,
    action = wez.action.ScrollByLine( -5 ),
  },
  {
    event = { Down = { streak = 1, button = { WheelDown = 1, }, }, },
    mods = 'SHIFT',
    alt_screen = false,
    action = wez.action.ScrollByLine( 5 ),
  },
  -- SHIFT+Wheel: send 5 line-scroll keys to mouse-aware alternate-screen apps
  {
    event = { Down = { streak = 1, button = { WheelUp = 1, }, }, },
    mods = 'SHIFT',
    alt_screen = true,
    mouse_reporting = true,
    action = wez.action.Multiple {
      wez.action.SendKey { key = 'PageUp', },
      wez.action.SendKey { key = 'PageUp', },
      wez.action.SendKey { key = 'PageUp', },
      wez.action.SendKey { key = 'PageUp', },
      wez.action.SendKey { key = 'PageUp', },
    },
  },
  {
    event = { Down = { streak = 1, button = { WheelDown = 1, }, }, },
    mods = 'SHIFT',
    alt_screen = true,
    mouse_reporting = true,
    action = wez.action.Multiple {
      wez.action.SendKey { key = 'PageDown', },
      wez.action.SendKey { key = 'PageDown', },
      wez.action.SendKey { key = 'PageDown', },
      wez.action.SendKey { key = 'PageDown', },
      wez.action.SendKey { key = 'PageDown', },
    },
  },
  {
    event = { Down = { streak = 4, button = 'Left', }, },
    action = wez.action.SelectTextAtMouseCursor 'SemanticZone',
    mods = 'NONE',
  },
  -- CTRL+Wheel: font size
  {
    event = { Down = { streak = 1, button = { WheelUp = 1, }, }, },
    mods = 'CTRL',
    action = wez.action.IncreaseFontSize,
  },
  {
    event = { Down = { streak = 1, button = { WheelDown = 1, }, }, },
    mods = 'CTRL',
    action = wez.action.DecreaseFontSize,
  },
}
return function ( cfg )
  ---@cast cfg Config
  cfg.mouse_bindings = bindings
end