from __future__ import annotations

from uuid import UUID

from pydantic import BaseModel, Field, field_validator


class VectorOperationResult(BaseModel):
    feature_count: int
    geometry_type_summary: dict[str, int]
    bounds_json: dict | None = None
    crs: str | None = None
    source_dataset_id: str


class VectorOperationRequest(BaseModel):
    output_name: str | None = None


class VectorClipRequest(VectorOperationRequest):
    area_id: str


class VectorBufferRequest(VectorOperationRequest):
    distance_m: float
    dissolve: bool = False


class VectorIntersectRequest(VectorOperationRequest):
    other_dataset_id: str


class VectorStatsRequest(BaseModel):
    pass


class RasterReadyResponse(BaseModel):
    dataset_id: str
    ready: bool
    message: str | None = None


class RasterOperationResult(BaseModel):
    dataset_id: str
    ready: bool
    metadata: dict | None = None
    output_dataset_id: str | None = None
    operation: str | None = None


class RasterMetadataResponse(BaseModel):
    dataset_id: str
    driver: str | None = None
    width: int | None = None
    height: int | None = None
    band_count: int | None = None
    crs: str | None = None
    bounds: list[float] | None = None
    resolution: list[float] | None = None
    dtype: list[str] | None = None
    nodata: list[float] | float | None = None
    transform: list[float] | None = None
    size_bytes: int | None = None
    checksum_sha256: str | None = None
    path: str | None = None


class RasterPreviewResponse(BaseModel):
    dataset_id: str
    ready: bool
    preview: dict
    metadata: dict | None = None


class RasterBandStats(BaseModel):
    band_index: int
    dtype: str | None = None
    min: float | None = None
    max: float | None = None
    mean: float | None = None
    std: float | None = None
    nodata_count: int
    nodata_ratio: float
    valid_pixel_count: int
    histogram: list[int] | None = None
    histogram_bins: list[float] | None = None


class RasterStatsResponse(BaseModel):
    dataset_id: str
    source_dataset_id: str | None = None
    bands: list[RasterBandStats]
    generated_at: str | None = None
    metadata: dict | None = None


class RasterReprojectRequest(BaseModel):
    target_crs: str | None = "EPSG:31370"
    resampling: str = "nearest"
    output_name: str | None = None


class RasterClipRequest(BaseModel):
    area_id: str
    output_name: str | None = None


class RasterTileRequest(BaseModel):
    tile_size: int = 512
    overlap: int = 64
    output_name: str | None = None


class RasterIndexBaseRequest(BaseModel):
    output_name: str | None = None


class RasterNdviRequest(RasterIndexBaseRequest):
    nir_band: int
    red_band: int


class RasterNdwiRequest(RasterIndexBaseRequest):
    green_band: int
    nir_band: int


class RasterNdbiRequest(RasterIndexBaseRequest):
    swir_band: int
    nir_band: int


class RasterTileManifestTile(BaseModel):
    path: str
    pixel_window: list[int]
    bounds: list[float]
    transform: list[float]
    index: int


class RasterTileManifest(BaseModel):
    tile_set_id: str
    source_dataset_id: str
    source_raster_id: str
    bounds: list[float]
    tile_size: int
    overlap: int
    parameters: dict[str, str | int | float | bool | None]
    created_at: str
    tile_paths: list[str]
    count: int
    tiles: list[RasterTileManifestTile]
    ai_inference: bool = False
    tile_server: str | None = None


class RasterTileResponse(BaseModel):
    dataset_id: str
    ready: bool
    operation: str
    tile_set_id: str
    tile_size: int
    overlap: int
    manifest_path: str
    count: int
    manifest: RasterTileManifest


class RasterReprojectResponse(BaseModel):
    dataset_id: str
    ready: bool
    operation: str
    output_dataset_id: str
    source_dataset_id: str
    target_dataset_id: str | None = None


class RasterOperationUnavailable(BaseModel):
    code: str
    message: str


class VectorBBoxResponse(BaseModel):
    dataset_id: str
    bounds_json: dict | None
    feature_count: int
    crs: str | None = None


class VectorStatsResponse(BaseModel):
    dataset_id: str
    feature_count: int
    geometry_type_summary: dict[str, int]
    bounds_json: dict | None
    crs: str | None = None


class VectorSelectionBBox(BaseModel):
    min_x: float
    min_y: float
    max_x: float
    max_y: float
    crs: str = "EPSG:4326"

    @field_validator("crs")
    @classmethod
    def validate_crs(cls, value: str) -> str:
        if value.upper() != "EPSG:4326":
            raise ValueError("Only EPSG:4326 bbox selection is supported")
        return "EPSG:4326"


class VectorSelectionRequest(BaseModel):
    bbox: VectorSelectionBBox
    area_id: UUID | None = None
    limit: int = Field(default=100, ge=1, le=1000)


class VectorSelectionDeriveRequest(VectorSelectionRequest):
    output_name: str | None = None


class VectorSelectionSummary(BaseModel):
    metric_label: str
    metric_value: float
    metric_unit: str
    aggregation_method: str
    feature_count: int
    is_estimate: bool = False
    warning: str | None = None


class VectorSelectionResponse(BaseModel):
    selection_bbox: VectorSelectionBBox
    selection_area_id: UUID | None = None
    feature_count: int
    total_feature_count: int | None = None
    limit: int
    truncated: bool
    geojson: dict
    summary: VectorSelectionSummary | None = None