import { app } from '../../scripts/app'
import { LGraphCanvas, LiteGraph } from '@comfyorg/litegraph'

function setNodeMode(node, mode) {
  node.mode = mode
  node.graph.change()
}

function addNodesToGroup(group, nodes = []) {
  var x1, y1, x2, y2
  var nx1, ny1, nx2, ny2
  var node

  x1 = y1 = x2 = y2 = -1
  nx1 = ny1 = nx2 = ny2 = -1

  for (var n of [group._nodes, nodes]) {
    for (var i in n) {
      node = n[i]

      nx1 = node.pos[0]
      ny1 = node.pos[1]
      nx2 = node.pos[0] + node.size[0]
      ny2 = node.pos[1] + node.size[1]

      if (node.type != 'Reroute') {
        ny1 -= LiteGraph.NODE_TITLE_HEIGHT
      }

      if (node.flags?.collapsed) {
        ny2 = ny1 + LiteGraph.NODE_TITLE_HEIGHT

        if (node?._collapsed_width) {
          nx2 = nx1 + Math.round(node._collapsed_width)
        }
      }

      if (x1 == -1 || nx1 < x1) {
        x1 = nx1
      }

      if (y1 == -1 || ny1 < y1) {
        y1 = ny1
      }

      if (x2 == -1 || nx2 > x2) {
        x2 = nx2
      }

      if (y2 == -1 || ny2 > y2) {
        y2 = ny2
      }
    }
  }

  var padding = 10

  y1 = y1 - Math.round(group.font_size * 1.4)

  group.pos = [x1 - padding, y1 - padding]
  group.size = [x2 - x1 + padding * 2, y2 - y1 + padding * 2]
}

app.registerExtension({
  name: 'Comfy.GroupOptions',
  setup() {
    const orig = LGraphCanvas.prototype.getCanvasMenuOptions
    // graph_mouse
    LGraphCanvas.prototype.getCanvasMenuOptions = function () {
      const options = orig.apply(this, arguments)
      const group = this.graph.getGroupOnPos(
        this.graph_mouse[0],
        this.graph_mouse[1]
      )
      if (!group) {
        options.push({
          content: 'Add Group For Selected Nodes',
          disabled: !Object.keys(app.canvas.selected_nodes || {}).length,
          callback: () => {
            // @ts-expect-error
            var group = new LiteGraph.LGraphGroup()
            addNodesToGroup(group, this.selected_nodes)
            app.canvas.graph.add(group)
            this.graph.change()
          }
        })

        return options
      }

      // Group nodes aren't recomputed until the group is moved, this ensures the nodes are up-to-date
      group.recomputeInsideNodes()
      const nodesInGroup = group._nodes

      options.push({
        content: 'Add Selected Nodes To Group',
        disabled: !Object.keys(app.canvas.selected_nodes || {}).length,
        callback: () => {
          addNodesToGroup(group, this.selected_nodes)
          this.graph.change()
        }
      })

      // No nodes in group, return default options
      if (nodesInGroup.length === 0) {
        return options
      } else {
        // Add a separator between the default options and the group options
        options.push(null)
      }

      // Check if all nodes are the same mode
      let allNodesAreSameMode = true
      for (let i = 1; i < nodesInGroup.length; i++) {
        if (nodesInGroup[i].mode !== nodesInGroup[0].mode) {
          allNodesAreSameMode = false
          break
        }
      }

      options.push({
        content: 'Fit Group To Nodes',
        callback: () => {
          addNodesToGroup(group)
          this.graph.change()
        }
      })

      options.push({
        content: 'Select Nodes',
        callback: () => {
          this.selectNodes(nodesInGroup)
          this.graph.change()
          this.canvas.focus()
        }
      })

      // Modes
      // 0: Always
      // 1: On Event
      // 2: Never
      // 3: On Trigger
      // 4: Bypass
      // If all nodes are the same mode, add a menu option to change the mode
      if (allNodesAreSameMode) {
        const mode = nodesInGroup[0].mode
        switch (mode) {
          case 0:
            // All nodes are always, option to disable, and bypass
            options.push({
              content: 'Set Group Nodes to Never',
              callback: () => {
                for (const node of nodesInGroup) {
                  setNodeMode(node, 2)
                }
              }
            })
            options.push({
              content: 'Bypass Group Nodes',
              callback: () => {
                for (const node of nodesInGroup) {
                  setNodeMode(node, 4)
                }
              }
            })
            break
          case 2:
            // All nodes are never, option to enable, and bypass
            options.push({
              content: 'Set Group Nodes to Always',
              callback: () => {
                for (const node of nodesInGroup) {
                  setNodeMode(node, 0)
                }
              }
            })
            options.push({
              content: 'Bypass Group Nodes',
              callback: () => {
                for (const node of nodesInGroup) {
                  setNodeMode(node, 4)
                }
              }
            })
            break
          case 4:
            // All nodes are bypass, option to enable, and disable
            options.push({
              content: 'Set Group Nodes to Always',
              callback: () => {
                for (const node of nodesInGroup) {
                  setNodeMode(node, 0)
                }
              }
            })
            options.push({
              content: 'Set Group Nodes to Never',
              callback: () => {
                for (const node of nodesInGroup) {
                  setNodeMode(node, 2)
                }
              }
            })
            break
          default:
            // All nodes are On Trigger or On Event(Or other?), option to disable, set to always, or bypass
            options.push({
              content: 'Set Group Nodes to Always',
              callback: () => {
                for (const node of nodesInGroup) {
                  setNodeMode(node, 0)
                }
              }
            })
            options.push({
              content: 'Set Group Nodes to Never',
              callback: () => {
                for (const node of nodesInGroup) {
                  setNodeMode(node, 2)
                }
              }
            })
            options.push({
              content: 'Bypass Group Nodes',
              callback: () => {
                for (const node of nodesInGroup) {
                  setNodeMode(node, 4)
                }
              }
            })
            break
        }
      } else {
        // Nodes are not all the same mode, add a menu option to change the mode to always, never, or bypass
        options.push({
          content: 'Set Group Nodes to Always',
          callback: () => {
            for (const node of nodesInGroup) {
              setNodeMode(node, 0)
            }
          }
        })
        options.push({
          content: 'Set Group Nodes to Never',
          callback: () => {
            for (const node of nodesInGroup) {
              setNodeMode(node, 2)
            }
          }
        })
        options.push({
          content: 'Bypass Group Nodes',
          callback: () => {
            for (const node of nodesInGroup) {
              setNodeMode(node, 4)
            }
          }
        })
      }

      return options
    }
  }
})