WIP: scalar draft

src/ert/config/scalar_parameter.py

@@ -1,15 +1,17 @@
 import math
+import os
 import warnings
 from dataclasses import dataclass
+from enum import StrEnum
 from pathlib import Path
-from typing import Literal
+from typing import Any, Literal, Self, overload
 
 import numpy as np
 from scipy.stats import norm
 
-from .parameter_config import ParameterConfig
-
-# parameter_configs = List[FieldParameter, SurfaceParameter, ScalarParameter]
+from ._str_to_bool import str_to_bool
+from .parameter_config import parse_config
+from .parsing import ConfigValidationError, ConfigWarning
 
 
 @dataclass
@@ -149,10 +151,67 @@ class PolarsData:
     data_set_file: Path
 
 
+@overload
+def _get_abs_path(file: None) -> None:
+    pass
+
+
+@overload
+def _get_abs_path(file: str) -> str:
+    pass
+
+
+def _get_abs_path(file: str | None) -> str | None:
+    if file is not None:
+        file = os.path.realpath(file)
+    return file
+
+
+def get_distribution(name: str, values: list[str]) -> Any:
+    return {
+        "NORMAL": TransNormalSettings(mean=float(values[0]), std=float(values[1])),
+        "UNIFORM": TransUnifSettings(min=float(values[0]), max=float(values[1])),
+        "TRUNC_NORMAL": TransTruncNormalSettings(
+            mean=float(values[0]),
+            std=float(values[1]),
+            min=float(values[2]),
+            max=float(values[3]),
+        ),
+        "RAW": TransRawSettings(),
+        "CONST": TransConstSettings(value=float(values[0])),
+        "DUNIF": TransDUnifSettings(
+            steps=int(values[0]), min=float(values[1]), max=float(values[2])
+        ),
+        "TRIANGULAR": TransTriangularSettings(
+            min=float(values[0]), mode=float(values[1]), max=float(values[2])
+        ),
+        "ERRF": TransErrfSettings(
+            min=float(values[0]),
+            max=float(values[1]),
+            skew=float(values[2]),
+            width=float(values[3]),
+        ),
+        "DERRF": TransDerrfSettings(
+            steps=int(values[0]),
+            min=float(values[1]),
+            max=float(values[2]),
+            skew=float(values[3]),
+            width=float(values[4]),
+        ),
+    }[name]
+
+
+class DataSource(StrEnum):
+    DESIGN_MATRIX = "design_matrix"
+    SAMPLED = "sampled"
+
+
 @dataclass
-class ScalarParameter(ParameterConfig):
-    # name: str
-    group: str
+class ScalarParameter:
+    template_file: str | None
+    output_file: str | None
+    param_name: str
+    group_name: str
     distribution: (
         TransUnifSettings
         | TransDUnifSettings
@@ -164,6 +223,129 @@ class ScalarParameter(ParameterConfig):
         | TransDerrfSettings
         | TransTriangularSettings
     )
-    active: bool
-    input_source: Literal["design_matrix", "sampled"]
-    dataset_file: PolarsData
+    # active: bool
+    input_source: DataSource
+    # dataset_file: PolarsData | None
+
+    @classmethod
+    def from_config_list(cls, gen_kw: list[str]) -> list[Self]:
+        gen_kw_key = gen_kw[0]
+
+        positional_args, options = parse_config(gen_kw, 4)
+        forward_init = str_to_bool(options.get("FORWARD_INIT", "FALSE"))
+        init_file = _get_abs_path(options.get("INIT_FILES"))
+        update_parameter = str_to_bool(options.get("UPDATE", "TRUE"))
+        errors = []
+
+        if len(positional_args) == 2:
+            parameter_file = _get_abs_path(positional_args[1])
+            parameter_file_context = positional_args[1]
+            template_file = None
+            output_file = None
+        elif len(positional_args) == 4:
+            output_file = positional_args[2]
+            parameter_file = _get_abs_path(positional_args[3])
+            parameter_file_context = positional_args[3]
+            template_file = _get_abs_path(positional_args[1])
+            if not os.path.isfile(template_file):
+                errors.append(
+                    ConfigValidationError.with_context(
+                        f"No such template file: {template_file}", positional_args[1]
+                    )
+                )
+            elif Path(template_file).stat().st_size == 0:
+                token = (
+                    parameter_file_context.token
+                    if hasattr(parameter_file_context, "token")
+                    else parameter_file_context
+                )
+                ConfigWarning.deprecation_warn(
+                    f"The template file for GEN_KW ({gen_kw_key}) is empty. If templating is not needed, you "
+                    f"can use GEN_KW with just the distribution file instead: GEN_KW {gen_kw_key} {token}",
+                    positional_args[1],
+                )
+
+        else:
+            raise ConfigValidationError(
+                f"Unexpected positional arguments: {positional_args}"
+            )
+        if not os.path.isfile(parameter_file):
+            errors.append(
+                ConfigValidationError.with_context(
+                    f"No such parameter file: {parameter_file}", parameter_file_context
+                )
+            )
+        elif Path(parameter_file).stat().st_size == 0:
+            errors.append(
+                ConfigValidationError.with_context(
+                    f"No parameters specified in {parameter_file}",
+                    parameter_file_context,
+                )
+            )
+
+        if forward_init:
+            errors.append(
+                ConfigValidationError.with_context(
+                    "Loading GEN_KW from files created by the forward "
+                    "model is not supported.",
+                    gen_kw,
+                )
+            )
+
+        if init_file:
+            errors.append(
+                ConfigValidationError.with_context(
+                    "Loading GEN_KW from init_files is not longer supported!",
+                    gen_kw,
+                )
+            )
+
+        if errors:
+            raise ConfigValidationError.from_collected(errors)
+
+        parameter_configuration: list[Self] = []
+        with open(parameter_file, encoding="utf-8") as file:
+            for line_number, item in enumerate(file):
+                item = item.split("--")[0]  # remove comments
+                if item.strip():  # only lines with content
+                    items = item.split()
+                    if len(items) < 2:
+                        errors.append(
+                            ConfigValidationError.with_context(
+                                f"Too few values on line {line_number} in parameter file {parameter_file}",
+                                gen_kw,
+                            )
+                        )
+                    else:
+                        parameter_configuration.append(
+                            cls(
+                                param_name=items[1],
+                                input_source=DataSource.SAMPLED,
+                                group_name=gen_kw_key,
+                                distribution=get_distribution(items[0], items[2:]),
+                                template_file=template_file,
+                                output_file=output_file,
+                            )
+                        )
+
+        if errors:
+            raise ConfigValidationError.from_collected(errors)
+
+        if gen_kw_key == "PRED" and update_parameter:
+            ConfigWarning.warn(
+                "GEN_KW PRED used to hold a special meaning and be "
+                "excluded from being updated.\n If the intention was "
+                "to exclude this from updates, set UPDATE:FALSE.\n",
+                gen_kw[0],
+            )
+        return parameter_configuration
+
+        # return cls(
+        #     name=gen_kw_key,
+        #     forward_init=forward_init,
+        #     template_file=template_file,
+        #     output_file=output_file,
+        #     forward_init_file=init_file,
+        #     transform_function_definitions=transform_function_definitions,
+        #     update=update_parameter,
+        # )