use fathom_function::tracing;
use pipeline_application::{
    application::{
        Application, IliComparisonOutput, MatchingCriteria, SurfaceLocationCriteria as SLC,
    },
    serialization::{
        serialize_meter, serialize_millimeter, serialize_orientation_min, serialize_percent,
    },
};
use uom::si::f64::{Angle, Length, Ratio};
use uuid::Uuid;

#[fathom_function::function]
async fn ili_compare_all(input: Input) -> Result<Output, String> {
    let mut output = Output::new(input.org_id, &input.project_id);
    let app = Application::new_from_compile_env(input.org_id, &input.project_id).unwrap();

    for pipeline_id in input.pipeline_id {
        let result = app
            .ili_compare_all(pipeline_id, MatchingCriteria::from(&input.criteria))
            .await
            .map_err(|err| {
                tracing::error!(%pipeline_id, ?err, "Error running comparison algorithm");
                format!("{err:?}")
            })?;
        output.push_result(pipeline_id, result);
    }

    Ok(output)
}

#[derive(Debug, serde::Serialize, Default)]
struct Output {
    // TODO: remove org_id, project_id, unique_pipeline_ids once function outputs from previous
    // nodes are all visible in downstream nodes (FTHM-11016).
    org_id: Uuid,
    unique_pipeline_ids: Vec<Uuid>,
    project_id: String,
    pipeline_ids: Vec<Uuid>,
    matched_ids: Vec<Uuid>,
    unmatched_ids: Vec<Uuid>,
    summary_ids: Vec<Uuid>,
}

impl Output {
    fn new(org_id: Uuid, project_id: impl ToString) -> Self {
        Self {
            org_id,
            project_id: project_id.to_string(),
            ..Default::default()
        }
    }

    fn push_result(&mut self, pipeline_id: Uuid, ili_comparison_result: Vec<IliComparisonOutput>) {
        self.unique_pipeline_ids.push(pipeline_id);
        ili_comparison_result.into_iter().for_each(|res| {
            self.pipeline_ids.push(pipeline_id);
            self.matched_ids.push(res.matched_id);
            self.unmatched_ids.push(res.unmatched_id);
            self.summary_ids.push(res.summary_id);
        });
    }
}

#[derive(Debug, serde::Deserialize)]
struct Input {
    org_id: Uuid,
    project_id: String,
    pipeline_id: Vec<Uuid>,

    #[serde(flatten)]
    criteria: Criteria,
}

#[derive(Debug, serde::Deserialize)]
struct Criteria {
    #[serde(with = "serialize_meter")]
    weld_location_threshold: Length,
    #[serde(with = "serialize_meter")]
    feature_location_threshold: Length,
    #[serde(with = "serialize_meter")]
    upstream_girth_threshold: Length,
    #[serde(with = "serialize_orientation_min")]
    orientation_threshold: Angle,
    #[serde(with = "serialize_percent")]
    minimum_depth_growth_threshold: Ratio,
    #[serde(with = "serialize_millimeter")]
    minimum_length_growth_threshold: Length,
    surface_location_criteria: SurfaceLocationCriteria,
    #[serde(with = "serialize_percent")]
    target_minimum_match_rate: Ratio,
    #[serde(default)]
    length_criteria_status: Status,
}

#[derive(Debug, Clone, Copy, serde::Deserialize)]
#[serde(rename_all = "snake_case")]
enum SurfaceLocationCriteria {
    Matching,
    Any,
}

impl From<SurfaceLocationCriteria> for SLC {
    fn from(value: SurfaceLocationCriteria) -> Self {
        match value {
            SurfaceLocationCriteria::Matching => Self::Matching,
            SurfaceLocationCriteria::Any => Self::Any,
        }
    }
}

#[derive(Debug, Default, Clone, Copy, serde::Deserialize)]
#[serde(rename_all = "snake_case")]
enum Status {
    #[default]
    Enabled,
    Disabled,
}

impl Status {
    fn is_disabled(&self) -> bool {
        matches!(self, Self::Disabled)
    }
}

impl From<&Criteria> for MatchingCriteria {
    fn from(value: &Criteria) -> Self {
        MatchingCriteria::default()
            .with_weld_location_threshold(value.weld_location_threshold)
            .with_feature_location_threshold(value.feature_location_threshold)
            .with_upstream_girth_threshold(value.upstream_girth_threshold)
            .with_orientation_threshold(value.orientation_threshold)
            .with_minimum_depth_growth_threshold(value.minimum_depth_growth_threshold)
            .with_minimum_length_growth_threshold(value.minimum_length_growth_threshold)
            .with_surface_location_criteria(value.surface_location_criteria)
            .with_target_minimum_match_rate(value.target_minimum_match_rate)
            .with_disable_length_criteria(value.length_criteria_status.is_disabled())
    }
}