'use strict'

let { isClean, my } = require('./symbols')
let CssSyntaxError = require('./css-syntax-error')
let Stringifier = require('./stringifier')
let stringify = require('./stringify')

function cloneNode(obj, parent) {
  let cloned = new obj.constructor()

  for (let i in obj) {
    if (!Object.prototype.hasOwnProperty.call(obj, i)) {
      /* c8 ignore next 2 */
      continue
    }
    if (i === 'proxyCache') continue
    let value = obj[i]
    let type = typeof value

    if (i === 'parent' && type === 'object') {
      if (parent) cloned[i] = parent
    } else if (i === 'source') {
      cloned[i] = value
    } else if (Array.isArray(value)) {
      cloned[i] = value.map(j => cloneNode(j, cloned))
    } else {
      if (type === 'object' && value !== null) value = cloneNode(value)
      cloned[i] = value
    }
  }

  return cloned
}

class Node {
  constructor(defaults = {}) {
    this.raws = {}
    this[isClean] = false
    this[my] = true

    for (let name in defaults) {
      if (name === 'nodes') {
        this.nodes = []
        for (let node of defaults[name]) {
          if (typeof node.clone === 'function') {
            this.append(node.clone())
          } else {
            this.append(node)
          }
        }
      } else {
        this[name] = defaults[name]
      }
    }
  }

  addToError(error) {
    error.postcssNode = this
    if (error.stack && this.source && /\n\s{4}at /.test(error.stack)) {
      let s = this.source
      error.stack = error.stack.replace(
        /\n\s{4}at /,
        `$&${s.input.from}:${s.start.line}:${s.start.column}$&`
      )
    }
    return error
  }

  after(add) {
    this.parent.insertAfter(this, add)
    return this
  }

  assign(overrides = {}) {
    for (let name in overrides) {
      this[name] = overrides[name]
    }
    return this
  }

  before(add) {
    this.parent.insertBefore(this, add)
    return this
  }

  cleanRaws(keepBetween) {
    delete this.raws.before
    delete this.raws.after
    if (!keepBetween) delete this.raws.between
  }

  clone(overrides = {}) {
    let cloned = cloneNode(this)
    for (let name in overrides) {
      cloned[name] = overrides[name]
    }
    return cloned
  }

  cloneAfter(overrides = {}) {
    let cloned = this.clone(overrides)
    this.parent.insertAfter(this, cloned)
    return cloned
  }

  cloneBefore(overrides = {}) {
    let cloned = this.clone(overrides)
    this.parent.insertBefore(this, cloned)
    return cloned
  }

  error(message, opts = {}) {
    if (this.source) {
      let { end, start } = this.rangeBy(opts)
      return this.source.input.error(
        message,
        { column: start.column, line: start.line },
        { column: end.column, line: end.line },
        opts
      )
    }
    return new CssSyntaxError(message)
  }

  getProxyProcessor() {
    return {
      get(node, prop) {
        if (prop === 'proxyOf') {
          return node
        } else if (prop === 'root') {
          return () => node.root().toProxy()
        } else {
          return node[prop]
        }
      },

      set(node, prop, value) {
        if (node[prop] === value) return true
        node[prop] = value
        if (
          prop === 'prop' ||
          prop === 'value' ||
          prop === 'name' ||
          prop === 'params' ||
          prop === 'important' ||
          /* c8 ignore next */
          prop === 'text'
        ) {
          node.markDirty()
        }
        return true
      }
    }
  }

  markDirty() {
    if (this[isClean]) {
      this[isClean] = false
      let next = this
      while ((next = next.parent)) {
        next[isClean] = false
      }
    }
  }

  next() {
    if (!this.parent) return undefined
    let index = this.parent.index(this)
    return this.parent.nodes[index + 1]
  }

  positionBy(opts, stringRepresentation) {
    let pos = this.source.start
    if (opts.index) {
      pos = this.positionInside(opts.index, stringRepresentation)
    } else if (opts.word) {
      stringRepresentation = this.toString()
      let index = stringRepresentation.indexOf(opts.word)
      if (index !== -1) pos = this.positionInside(index, stringRepresentation)
    }
    return pos
  }

  positionInside(index, stringRepresentation) {
    let string = stringRepresentation || this.toString()
    let column = this.source.start.column
    let line = this.source.start.line

    for (let i = 0; i < index; i++) {
      if (string[i] === '\n') {
        column = 1
        line += 1
      } else {
        column += 1
      }
    }

    return { column, line }
  }

  prev() {
    if (!this.parent) return undefined
    let index = this.parent.index(this)
    return this.parent.nodes[index - 1]
  }

  rangeBy(opts) {
    let start = {
      column: this.source.start.column,
      line: this.source.start.line
    }
    let end = this.source.end
      ? {
        column: this.source.end.column + 1,
        line: this.source.end.line
      }
      : {
        column: start.column + 1,
        line: start.line
      }

    if (opts.word) {
      let stringRepresentation = this.toString()
      let index = stringRepresentation.indexOf(opts.word)
      if (index !== -1) {
        start = this.positionInside(index, stringRepresentation)
        end = this.positionInside(index + opts.word.length, stringRepresentation)
      }
    } else {
      if (opts.start) {
        start = {
          column: opts.start.column,
          line: opts.start.line
        }
      } else if (opts.index) {
        start = this.positionInside(opts.index)
      }

      if (opts.end) {
        end = {
          column: opts.end.column,
          line: opts.end.line
        }
      } else if (typeof opts.endIndex === 'number') {
        end = this.positionInside(opts.endIndex)
      } else if (opts.index) {
        end = this.positionInside(opts.index + 1)
      }
    }

    if (
      end.line < start.line ||
      (end.line === start.line && end.column <= start.column)
    ) {
      end = { column: start.column + 1, line: start.line }
    }

    return { end, start }
  }

  raw(prop, defaultType) {
    let str = new Stringifier()
    return str.raw(this, prop, defaultType)
  }

  remove() {
    if (this.parent) {
      this.parent.removeChild(this)
    }
    this.parent = undefined
    return this
  }

  replaceWith(...nodes) {
    if (this.parent) {
      let bookmark = this
      let foundSelf = false
      for (let node of nodes) {
        if (node === this) {
          foundSelf = true
        } else if (foundSelf) {
          this.parent.insertAfter(bookmark, node)
          bookmark = node
        } else {
          this.parent.insertBefore(bookmark, node)
        }
      }

      if (!foundSelf) {
        this.remove()
      }
    }

    return this
  }

  root() {
    let result = this
    while (result.parent && result.parent.type !== 'document') {
      result = result.parent
    }
    return result
  }

  toJSON(_, inputs) {
    let fixed = {}
    let emitInputs = inputs == null
    inputs = inputs || new Map()
    let inputsNextIndex = 0

    for (let name in this) {
      if (!Object.prototype.hasOwnProperty.call(this, name)) {
        /* c8 ignore next 2 */
        continue
      }
      if (name === 'parent' || name === 'proxyCache') continue
      let value = this[name]

      if (Array.isArray(value)) {
        fixed[name] = value.map(i => {
          if (typeof i === 'object' && i.toJSON) {
            return i.toJSON(null, inputs)
          } else {
            return i
          }
        })
      } else if (typeof value === 'object' && value.toJSON) {
        fixed[name] = value.toJSON(null, inputs)
      } else if (name === 'source') {
        let inputId = inputs.get(value.input)
        if (inputId == null) {
          inputId = inputsNextIndex
          inputs.set(value.input, inputsNextIndex)
          inputsNextIndex++
        }
        fixed[name] = {
          end: value.end,
          inputId,
          start: value.start
        }
      } else {
        fixed[name] = value
      }
    }

    if (emitInputs) {
      fixed.inputs = [...inputs.keys()].map(input => input.toJSON())
    }

    return fixed
  }

  toProxy() {
    if (!this.proxyCache) {
      this.proxyCache = new Proxy(this, this.getProxyProcessor())
    }
    return this.proxyCache
  }

  toString(stringifier = stringify) {
    if (stringifier.stringify) stringifier = stringifier.stringify
    let result = ''
    stringifier(this, i => {
      result += i
    })
    return result
  }

  warn(result, text, opts) {
    let data = { node: this }
    for (let i in opts) data[i] = opts[i]
    return result.warn(text, data)
  }

  get proxyOf() {
    return this
  }
}

module.exports = Node
Node.default = Node

.NET Framework

Project Request

ProjectC

Vehicle Maintenance

Movie Navigator

Customers Exchange

ATM

.NET Core

Mail Daemon

Custom

Buns of code

PHP

Mediabox

Loan Castle

Content Management

Laravel

Phone Check

Frontend

Forex Wall

Business projects

Certification Center

Amerikas Auto

Pet projects

Geolocation Assistant

Web Dynamics

Blackball

Good old times

DOS Clock

BrainOut

Airport Administrator

Atomizer

Mediabox