{
  "$schema": "https://json-schema.org/draft/2020-12/schema",
  "$id": "https://jschmitt1531.github.io/peakly/schemas/project.v2.schema.json",
  "title": "Peakly project",
  "description": "A saved Peakly project (.peakly.json). Older v1 files are migrated on load (see PK.schema.migrate).",
  "type": "object",
  "required": [
    "version",
    "traces"
  ],
  "properties": {
    "format": {
      "const": "peakly-project"
    },
    "version": {
      "type": "integer",
      "const": 2
    },
    "schema": {
      "type": "object",
      "properties": {
        "name": {
          "const": "peakly-project"
        },
        "version": {
          "const": 2
        }
      }
    },
    "name": {
      "type": "string"
    },
    "traces": {
      "type": "array",
      "items": {
        "type": "object",
        "required": [
          "id",
          "name",
          "x",
          "y"
        ],
        "properties": {
          "id": {
            "type": "string"
          },
          "name": {
            "type": "string"
          },
          "x": {
            "description": "Ascending x values (min, or mL when xUnit is mL). Share links pack arrays as {u:[x0,dx,n]} or {e,d}.",
            "type": [
              "array",
              "object"
            ]
          },
          "y": {
            "type": [
              "array",
              "object"
            ]
          },
          "xUnit": {
            "type": "string",
            "enum": [
              "min",
              "mL",
              "CV"
            ]
          },
          "yUnit": {
            "type": "string"
          },
          "source": {
            "type": "object"
          },
          "digitized": {
            "description": "false, or {dxMin, dy, imageId, printedPeaks?, warnings[]} for image-derived traces.",
            "type": [
              "boolean",
              "object"
            ]
          },
          "meta": {
            "type": "object",
            "description": "Parsed metadata; meta.run holds run info; meta.role marks auxiliary channels."
          },
          "style": {
            "type": "object"
          },
          "proc": {
            "type": "object",
            "description": "{smooth:{on,window,order}, baseline:{on,lambda,lambdaAuto,p,iter}, peaks:{threshold,minDist,minWidth,auto}}"
          },
          "peaks": {
            "type": "array",
            "items": {
              "type": "object",
              "required": [
                "id",
                "start",
                "end"
              ],
              "properties": {
                "id": {
                  "type": "string"
                },
                "start": {
                  "type": "number"
                },
                "apex": {
                  "type": "number"
                },
                "end": {
                  "type": "number"
                },
                "manual": {
                  "type": "boolean"
                },
                "label": {
                  "type": "string"
                },
                "importedFrom": {
                  "type": "string",
                  "description": "Tool that reported the peak in an imported file (chromatopy, mocca2); such peaks are kept as manual."
                },
                "importedArea": {
                  "type": "number"
                },
                "importedAreaSE": {
                  "type": "number"
                },
                "clip": {
                  "description": "Per-peak override; absent = project default (settings.clipDefault). Manual window integrations default to valley.",
                  "type": "string",
                  "enum": [
                    "drop",
                    "valley",
                    "baseline",
                    "skim-tangent",
                    "skim-exp",
                    "fit"
                  ]
                }
              }
            }
          },
          "fit": {
            "type": [
              "object",
              "null"
            ]
          }
        }
      }
    },
    "method": {
      "type": "object",
      "description": "Method: gradient [{t,B,flow}], column, flow, dwell volume, wavelength… (CONTRACT.md)."
    },
    "images": {
      "type": "object",
      "additionalProperties": {
        "type": "string",
        "description": "data: URL"
      }
    },
    "settings": {
      "type": "object",
      "properties": {
        "clipDefault": {
          "type": "string",
          "enum": [
            "drop",
            "valley",
            "baseline",
            "skim-tangent",
            "skim-exp",
            "fit"
          ],
          "description": "Peak clipping mode."
        },
        "askClip": {
          "type": "boolean",
          "default": true,
          "description": "Ask how to split fused peaks."
        },
        "normalization": {
          "type": "string",
          "enum": [
            "none",
            "max",
            "area"
          ]
        },
        "lineStyles": {
          "type": "boolean",
          "description": "Distinguish overlay traces by dash pattern."
        }
      }
    },
    "calibration": {
      "type": "object",
      "properties": {
        "unit": {
          "type": "string"
        },
        "analytes": {
          "type": "array",
          "items": {
            "type": "object",
            "required": [
              "id",
              "name",
              "peakMatch"
            ],
            "properties": {
              "id": {
                "type": "string"
              },
              "name": {
                "type": "string"
              },
              "peakMatch": {
                "type": "object",
                "properties": {
                  "rt": {
                    "type": [
                      "number",
                      "null"
                    ]
                  },
                  "tol": {
                    "type": "number",
                    "exclusiveMinimum": 0,
                    "default": 0.1
                  }
                }
              },
              "response": {
                "type": "string",
                "enum": [
                  "area",
                  "height"
                ],
                "default": "area"
              },
              "model": {
                "type": "string",
                "enum": [
                  "linear",
                  "linear0",
                  "quadratic"
                ],
                "default": "linear",
                "description": "linear: y = b0 + b1·x; linear0: y = b1·x; quadratic: y = b0 + b1·x + b2·x²."
              },
              "weighting": {
                "type": "string",
                "enum": [
                  "none",
                  "1/x",
                  "1/x2"
                ],
                "default": "none"
              },
              "levels": {
                "type": "array",
                "items": {
                  "type": "object",
                  "properties": {
                    "conc": {
                      "type": [
                        "number",
                        "null"
                      ]
                    },
                    "unit": {
                      "type": "string"
                    },
                    "traceId": {
                      "type": "string",
                      "description": "Standard trace; the response is read from its matched peak."
                    },
                    "response": {
                      "type": "number",
                      "description": "Typed-in response (used when traceId is absent)."
                    },
                    "include": {
                      "type": "boolean",
                      "default": true
                    },
                    "label": {
                      "type": "string"
                    }
                  }
                }
              }
            }
          }
        }
      }
    },
    "activeTraceId": {
      "type": [
        "string",
        "null"
      ]
    }
  }
}