cosmic_space/

substance.rs

use core::str::FromStr;
use nom::ExtendInto;
use std::collections::HashMap;
use std::ops::{Deref, DerefMut};
use std::sync::Arc;

use serde::{Deserialize, Serialize};
use serde_json::Value;

use cosmic_macros_primitive::Autobox;
use cosmic_nom::Tw;

use crate::command::{Command, RawCommand};
use crate::err::ParseErrs;
use crate::hyper::{Greet, HyperSubstance, Knock, ParticleLocation};
use crate::loc::Meta;
use crate::log::{AuditLog, Log, LogSpan, LogSpanEvent, PointlessLog};
use crate::parse::model::Subst;
use crate::parse::Env;
use crate::particle::Particle;
use crate::util::{ToResolved, ValueMatcher, ValuePattern};
use crate::wave::core::cmd::CmdMethod;
use crate::wave::core::ext::ExtMethod;
use crate::wave::core::http2::HttpMethod;
use crate::wave::core::hyp::HypMethod;
use crate::wave::core::{DirectedCore, HeaderMap, ReflectedCore};
use crate::wave::{Pong, UltraWave};
use crate::{Details, SpaceErr, Status, Stub, Surface, util};
use url::Url;
use crate::point::{Point, PointCtx, PointVar};

#[derive(
    Debug,
    Clone,
    Serialize,
    Deserialize,
    Eq,
    PartialEq,
    strum_macros::Display,
    strum_macros::EnumString,
)]
pub enum SubstanceKind {
    Empty,
    List,
    Map,
    Point,
    Surface,
    Text,
    Boolean,
    Int,
    Meta,
    Bin,
    Stub,
    Details,
    Status,
    Particle,
    Location,
    FormErrs,
    Json,
    MultipartForm,
    RawCommand,
    Command,
    DirectedCore,
    ReflectedCore,
    Hyp,
    Token,
    UltraWave,
    Knock,
    Greet,
    Log,
    Err,
}

#[derive(
    Debug,
    Clone,
    Serialize,
    Deserialize,
    Eq,
    PartialEq,
    strum_macros::Display,
    Autobox,
    cosmic_macros_primitive::ToSubstance,
)]
pub enum Substance {
    Empty,
    List(SubstanceList),
    Map(SubstanceMap),
    Point(Point),
    Surface(Surface),
    Text(String),
    Stub(Stub),
    Details(Details),
    Meta(Meta),
    Bin(Bin),
    Boolean(bool),
    Int(i64),
    Status(Status),
    Particle(Particle),
    Location(ParticleLocation),
    RawCommand(RawCommand),
    Command(Box<Command>),
    FormErrs(FormErrs),
    Json(Value),
    MultipartForm(MultipartForm),
    DirectedCore(Box<DirectedCore>),
    ReflectedCore(Box<ReflectedCore>),
    Hyper(HyperSubstance),
    Token(Token),
    UltraWave(Box<UltraWave>),
    Knock(Knock),
    Greet(Greet),
    Log(LogSubstance),
    Err(SpaceErr),
}

impl Substance {
    pub fn ultrawave(&self) -> Option<&UltraWave> {
        if let Substance::UltraWave(wave) = self {
            Some(wave.as_ref())
        } else {
            None
        }
    }

    pub fn ultrawave_mut(&mut self) -> Option<&mut UltraWave> {
        if let Substance::UltraWave(wave) = self {
            Some(wave.as_mut())
        } else {
            None
        }
    }
}

pub trait ToSubstance<S> {
    fn to_substance(self) -> Result<S, SpaceErr>;
    fn to_substance_ref(&self) -> Result<&S, SpaceErr>;
}

pub trait ChildSubstance {}

#[derive(Debug, Clone, Serialize, Deserialize, Eq, PartialEq, Hash)]
pub struct Token {
    data: String,
}

impl Token {
    pub fn new<D: ToString>(data: D) -> Self {
        Self {
            data: data.to_string(),
        }
    }

    pub fn new_uuid() -> Self {
        Self::new(util::uuid())
    }
}

impl Deref for Token {
    type Target = String;

    fn deref(&self) -> &Self::Target {
        &self.data
    }
}

impl ToString for Token {
    fn to_string(&self) -> String {
        self.data.clone()
    }
}

impl FromStr for Token {
    type Err = SpaceErr;

    fn from_str(s: &str) -> Result<Self, Self::Err> {
        Ok(Token::new(s))
    }
}

impl TryFrom<Pong> for Token {
    type Error = SpaceErr;

    fn try_from(response: Pong) -> Result<Self, Self::Error> {
        response.core.body.try_into()
    }
}

pub trait ToRequestCore {
    type Method;
    fn to_request_core(self) -> DirectedCore;
}

impl Default for Substance {
    fn default() -> Self {
        Substance::Empty
    }
}

impl Substance {
    pub fn to_text(self) -> Result<String, SpaceErr> {
        if let Substance::Text(text) = self {
            Ok(text)
        } else {
            Err("not a 'Text' payload".into())
        }
    }

    pub fn is_some(&self) -> bool {
        if let Self::Empty = self {
            false
        } else {
            true
        }
    }

    pub fn from_bin(bin: Bin) -> Self {
        Self::Bin(bin)
    }

    pub fn kind(&self) -> SubstanceKind {
        match self {
            Substance::Empty => SubstanceKind::Empty,
            Substance::List(_) => SubstanceKind::List,
            Substance::Map(_) => SubstanceKind::Map,
            Substance::Point(_) => SubstanceKind::Point,
            Substance::Text(_) => SubstanceKind::Text,
            Substance::Stub(_) => SubstanceKind::Stub,
            Substance::Meta(_) => SubstanceKind::Meta,
            Substance::Bin(_) => SubstanceKind::Bin,
            Substance::Boolean(_) => SubstanceKind::Boolean,
            Substance::Int(_) => SubstanceKind::Int,
            Substance::Status(_) => SubstanceKind::Status,
            Substance::Particle(_) => SubstanceKind::Particle,
            Substance::FormErrs(_) => SubstanceKind::FormErrs,
            Substance::Json(_) => SubstanceKind::Json,
            Substance::RawCommand(_) => SubstanceKind::RawCommand,
            Substance::Surface(_) => SubstanceKind::Surface,
            Substance::Command(_) => SubstanceKind::Command,
            Substance::DirectedCore(_) => SubstanceKind::DirectedCore,
            Substance::ReflectedCore(_) => SubstanceKind::ReflectedCore,
            Substance::Hyper(_) => SubstanceKind::Hyp,
            Substance::MultipartForm(_) => SubstanceKind::MultipartForm,
            Substance::Token(_) => SubstanceKind::Token,
            Substance::UltraWave(_) => SubstanceKind::UltraWave,
            Substance::Knock(_) => SubstanceKind::Knock,
            Substance::Greet(_) => SubstanceKind::Greet,
            Substance::Details(_) => SubstanceKind::Details,
            Substance::Location(_) => SubstanceKind::Location,
            Substance::Log(_) => SubstanceKind::Log,
            Substance::Err(_) => SubstanceKind::Err,
        }
    }

    pub fn to_bin(self) -> Result<Bin, SpaceErr> {
        match self {
            Substance::Empty => Ok(Arc::new(vec![])),
            Substance::List(list) => list.to_bin(),
            Substance::Map(map) => map.to_bin(),
            Substance::Bin(bin) => Ok(bin),
            Substance::Text(text) => Ok(Arc::new(text.as_bytes().to_vec())),
            what => Err(format!("{}.to_bin() not supported", what.kind().to_string()).into()),
        }
    }
}

#[derive(
    Debug,
    Clone,
    Serialize,
    Deserialize,
    Eq,
    PartialEq,
    Autobox,
    cosmic_macros_primitive::ToSubstance,
)]
pub enum LogSubstance {
    Log(Log),
    Span(LogSpan),
    Event(LogSpanEvent),
    Audit(AuditLog),
    Pointless(PointlessLog),
}

impl TryInto<HashMap<String, Substance>> for Substance {
    type Error = SpaceErr;

    fn try_into(self) -> Result<HashMap<String, Substance>, Self::Error> {
        match self {
            Substance::Map(map) => Ok(map.map),
            _ => Err("Substance type must a Map".into()),
        }
    }
}

#[derive(Debug, Clone, Serialize, Deserialize, Eq, PartialEq)]
pub struct SubstanceMap {
    pub map: HashMap<String, Substance>,
}

impl Deref for SubstanceMap {
    type Target = HashMap<String, Substance>;

    fn deref(&self) -> &Self::Target {
        &self.map
    }
}

impl DerefMut for SubstanceMap {
    fn deref_mut(&mut self) -> &mut Self::Target {
        &mut self.map
    }
}

impl Default for SubstanceMap {
    fn default() -> Self {
        Self {
            map: Default::default(),
        }
    }
}

impl SubstanceMap {
    /*
    pub fn new(constraints: MapConstraints<KEY,ADDRESS,IDENTIFIER,KIND> ) -> Self {
        Self{
    //        constraints,
            map: HashMap::new()
        }
    }

     */
    pub fn to_bin(self) -> Result<Bin, SpaceErr> {
        Ok(Arc::new(bincode::serialize(&self)?))
    }

    pub fn new() -> Self {
        Self {
            map: HashMap::new(),
        }
    }
}

#[derive(Debug, Clone, Serialize, Deserialize, Eq, PartialEq)]
pub struct FormErrs {
    map: HashMap<String, String>,
}

impl FormErrs {
    pub fn to_cosmic_err(&self) -> SpaceErr {
        SpaceErr::new(500, self.to_string().as_str())
    }

    pub fn empty() -> Self {
        Self {
            map: HashMap::new(),
        }
    }

    pub fn default<S: ToString>(message: S) -> Self {
        let mut map = HashMap::new();
        map.insert("default".to_string(), message.to_string());
        Self { map }
    }
}

impl From<SpaceErr> for FormErrs {
    fn from(err: SpaceErr) -> Self {
        match err {
            SpaceErr::Status { status, message } => {
                Self::default(format!("{} {}", status, message).as_str())
            }
            SpaceErr::ParseErrs(_) => Self::default("500: parse error"),
        }
    }
}

impl ToString for FormErrs {
    fn to_string(&self) -> String {
        let mut rtn = String::new();
        for (index, (_, value)) in self.iter().enumerate() {
            rtn.push_str(value.as_str());
            if index == self.len() - 1 {
                rtn.push_str("\n");
            }
        }
        rtn
    }
}

impl Deref for FormErrs {
    type Target = HashMap<String, String>;

    fn deref(&self) -> &Self::Target {
        &self.map
    }
}

#[derive(Debug, Clone, Serialize, Deserialize, Eq, PartialEq)]
pub struct SubstanceList {
    pub list: Vec<Box<Substance>>,
}

impl ToString for SubstanceList {
    fn to_string(&self) -> String {
        "[]".to_string()
    }
}

impl SubstanceList {
    pub fn new() -> Self {
        Self { list: vec![] }
    }
    pub fn to_bin(self) -> Result<Bin, SpaceErr> {
        Ok(Arc::new(bincode::serialize(&self)?))
    }
}

impl Deref for SubstanceList {
    type Target = Vec<Box<Substance>>;

    fn deref(&self) -> &Self::Target {
        &self.list
    }
}

impl DerefMut for SubstanceList {
    fn deref_mut(&mut self) -> &mut Self::Target {
        &mut self.list
    }
}

#[derive(Debug, Clone, Serialize, Deserialize, Eq, PartialEq)]
pub struct ListPattern {
    pub primitive: SubstanceKind,
    pub range: NumRange,
}

impl ListPattern {
    pub fn is_match(&self, list: &SubstanceList) -> Result<(), SpaceErr> {
        /*
        for i in &list.list {
            if self.primitive != i.primitive_type() {
                return Err(format!(
                    "Primitive List expected: {} found: {}",
                    self.primitive.to_string(),
                    i.primitive_type().to_string()
                )
                .into());
            }
        }

        Ok(())

         */
        unimplemented!()
    }
}

#[derive(Debug, Clone, Serialize, Deserialize, Eq, PartialEq)]
pub enum NumRange {
    MinMax { min: usize, max: usize },
    Exact(usize),
    Any,
}

pub type SubstanceTypePatternCtx = SubstanceTypePatternDef<PointCtx>;
pub type SubstanceTypePatternVar = SubstanceTypePatternDef<PointVar>;

#[derive(Debug, Clone, Serialize, Deserialize, Eq, PartialEq)]
pub enum SubstanceTypePatternDef<Pnt> {
    Empty,
    Primitive(SubstanceKind),
    List(ListPattern),
    Map(Box<MapPatternDef<Pnt>>),
}

impl ToResolved<SubstanceTypePatternDef<Point>> for SubstanceTypePatternDef<PointCtx> {
    fn to_resolved(self, env: &Env) -> Result<SubstanceTypePatternDef<Point>, SpaceErr> {
        match self {
            SubstanceTypePatternDef::Empty => Ok(SubstanceTypePatternDef::Empty),
            SubstanceTypePatternDef::Primitive(payload_type) => {
                Ok(SubstanceTypePatternDef::Primitive(payload_type))
            }
            SubstanceTypePatternDef::List(list) => Ok(SubstanceTypePatternDef::List(list)),
            SubstanceTypePatternDef::Map(map) => {
                Err("MapPatternCtx resolution not supported yet...".into())
            }
        }
    }
}

impl ToResolved<SubstanceTypePatternCtx> for SubstanceTypePatternVar {
    fn to_resolved(self, env: &Env) -> Result<SubstanceTypePatternCtx, SpaceErr> {
        match self {
            SubstanceTypePatternVar::Empty => Ok(SubstanceTypePatternCtx::Empty),
            SubstanceTypePatternVar::Primitive(payload_type) => {
                Ok(SubstanceTypePatternCtx::Primitive(payload_type))
            }
            SubstanceTypePatternVar::List(list) => Ok(SubstanceTypePatternCtx::List(list)),
            SubstanceTypePatternVar::Map(map) => {
                Err("MapPatternCtx resolution not supported yet...".into())
            }
        }
    }
}

impl<Pnt> SubstanceTypePatternDef<Pnt> {
    pub fn is_match(&self, payload: &Substance) -> Result<(), ()> {
        unimplemented!();
        /*
        match self {
            SubstanceTypePattern::Empty => {
                if payload.payload_type() == SubstanceType::Empty {
                    Ok(())
                } else {
                    Err(format!(
                        "Substance expected: Empty found: {}",
                        payload.payload_type().to_string()
                    )
                    .into())
                }
            }
            SubstanceTypePattern::Primitive(expected) => {
                if let Substance::Primitive(found) = payload {
                    if *expected == found.primitive_type() {
                        Ok(())
                    } else {
                        Err(format!(
                            "Substance Primitive expected: {} found: {}",
                            expected.to_string(),
                            found.primitive_type().to_string()
                        )
                        .into())
                    }
                } else {
                    Err(format!(
                        "Substance expected: {} found: {}",
                        expected.to_string(),
                        payload.payload_type().to_string()
                    )
                    .into())
                }
            }
            SubstanceTypePattern::List(expected) => {
                if let Substance::List(found) = payload {
                    expected.is_match(found)
                } else {
                    Err(format!(
                        "Substance expected: List found: {}",
                        payload.payload_type().to_string()
                    )
                    .into())
                }
            }
            SubstanceTypePattern::Map(expected) => {
                if let Substance::Map(found) = payload {
                    expected.is_match(found)
                } else {
                    Err(format!(
                        "Substance expected: {} found: {}",
                        expected.to_string(),
                        payload.payload_type().to_string()
                    )
                    .into())
                }
            }
        }

         */
    }
}

pub type SubstancePatternVar = SubstancePatternDef<PointVar>;
pub type SubstancePatternCtx = SubstancePatternDef<PointCtx>;
pub type SubstancePattern = SubstancePatternDef<Point>;

#[derive(Debug, Clone, Serialize, Deserialize, Eq, PartialEq)]
pub struct SubstancePatternDef<Pnt> {
    pub structure: SubstanceTypePatternDef<Pnt>,
    pub format: Option<SubstanceFormat>,
    pub validator: Option<CallWithConfigDef<Pnt>>,
}

impl ToResolved<SubstancePatternCtx> for SubstancePatternVar {
    fn to_resolved(self, env: &Env) -> Result<SubstancePatternCtx, SpaceErr> {
        let mut errs = vec![];
        let structure = match self.structure.to_resolved(env) {
            Ok(structure) => Some(structure),
            Err(err) => {
                errs.push(err);
                None
            }
        };
        let validator = match self.validator {
            None => None,
            Some(validator) => match validator.to_resolved(env) {
                Ok(validator) => Some(validator),
                Err(err) => {
                    errs.push(err);
                    None
                }
            },
        };

        if errs.is_empty() {
            Ok(SubstancePatternCtx {
                structure: structure.expect("structure"),
                validator: validator,
                format: self.format,
            })
        } else {
            Err(ParseErrs::fold(errs).into())
        }
    }
}

impl ToResolved<SubstancePattern> for SubstancePatternCtx {
    fn to_resolved(self, resolver: &Env) -> Result<SubstancePattern, SpaceErr> {
        let mut errs = vec![];
        let structure = match self.structure.to_resolved(resolver) {
            Ok(structure) => Some(structure),
            Err(err) => {
                errs.push(err);
                None
            }
        };
        let validator = match self.validator {
            None => None,
            Some(validator) => match validator.to_resolved(resolver) {
                Ok(validator) => Some(validator),
                Err(err) => {
                    errs.push(err);
                    None
                }
            },
        };

        if errs.is_empty() {
            Ok(SubstancePattern {
                structure: structure.expect("structure"),
                validator: validator,
                format: self.format,
            })
        } else {
            Err(ParseErrs::fold(errs).into())
        }
    }
}

impl<Pnt> ValueMatcher<Substance> for SubstancePatternDef<Pnt> {
    fn is_match(&self, payload: &Substance) -> Result<(), ()> {
        self.structure.is_match(&payload)?;

        // more matching to come... not sure exactly how to match Format and Validation...
        Ok(())
    }
}

#[derive(Debug, Clone, Serialize, Deserialize, Eq, PartialEq)]
pub struct CallWithConfigDef<Pnt> {
    pub call: CallDef<Pnt>,
    pub config: Option<Pnt>,
}

pub type CallWithConfig = CallWithConfigDef<Point>;
pub type CallWithConfigCtx = CallWithConfigDef<PointCtx>;
pub type CallWithConfigVar = CallWithConfigDef<PointVar>;

impl ToResolved<CallWithConfigCtx> for CallWithConfigVar {
    fn to_resolved(self, resolver: &Env) -> Result<CallWithConfigCtx, SpaceErr> {
        let mut errs = vec![];
        let call = match self.call.to_resolved(resolver) {
            Ok(call) => Some(call),
            Err(err) => {
                errs.push(err);
                None
            }
        };
        let config = match self.config {
            None => None,
            Some(config) => match config.to_resolved(resolver) {
                Ok(config) => Some(config),
                Err(err) => {
                    errs.push(err);
                    None
                }
            },
        };

        if errs.is_empty() {
            Ok(CallWithConfigCtx {
                call: call.expect("call"),
                config,
            })
        } else {
            Err(ParseErrs::fold(errs).into())
        }
    }
}

impl ToResolved<CallWithConfig> for CallWithConfigCtx {
    fn to_resolved(self, resolver: &Env) -> Result<CallWithConfig, SpaceErr> {
        let mut errs = vec![];
        let call = match self.call.to_resolved(resolver) {
            Ok(call) => Some(call),
            Err(err) => {
                errs.push(err);
                None
            }
        };
        let config = match self.config {
            None => None,
            Some(config) => match config.to_resolved(resolver) {
                Ok(config) => Some(config),
                Err(err) => {
                    errs.push(err);
                    None
                }
            },
        };

        if errs.is_empty() {
            Ok(CallWithConfig {
                call: call.expect("call"),
                config,
            })
        } else {
            Err(ParseErrs::fold(errs).into())
        }
    }
}

pub type Call = CallDef<Point>;
pub type CallCtx = CallDef<PointCtx>;
pub type CallVar = CallDef<PointVar>;

impl ToResolved<Call> for CallCtx {
    fn to_resolved(self, env: &Env) -> Result<Call, SpaceErr> {
        Ok(Call {
            point: self.point.to_resolved(env)?,
            kind: self.kind,
        })
    }
}

impl ToResolved<CallCtx> for CallVar {
    fn to_resolved(self, env: &Env) -> Result<CallCtx, SpaceErr> {
        Ok(CallCtx {
            point: self.point.to_resolved(env)?,
            kind: self.kind,
        })
    }
}

impl ToResolved<Call> for CallVar {
    fn to_resolved(self, env: &Env) -> Result<Call, SpaceErr> {
        let call: CallCtx = self.to_resolved(env)?;
        call.to_resolved(env)
    }
}

#[derive(Debug, Clone, Serialize, Deserialize, Eq, PartialEq)]
pub struct CallDef<Pnt> {
    pub point: Pnt,
    pub kind: CallKind,
}

#[derive(Debug, Clone, Serialize, Deserialize, Eq, PartialEq)]
pub enum CallKind {
    Cmd(CmdCall),
    Hyp(HypCall),
    Ext(ExtCall),
    Http(HttpCall),
}

impl CallKind {
    /*
    pub fn core_with_body(self, body: Substance) -> Result<RequestCore, ExtErr> {
        Ok(match self {
            CallKind::Ext(msg) => RequestCore {
                headers: Default::default(),
                method: Method::Ext(ExtMethod::new(msg.method)?),
                uri: Uri::from_str(msg.path.as_str())?,
                body,
            },
            CallKind::Http(http) => RequestCore {
                headers: Default::default(),
                method: Method::Http(http.method),
                uri: Uri::from_str(http.path.as_str())?,
                body,
            },
        })
    }
     */
}

impl ToString for Call {
    fn to_string(&self) -> String {
        format!("{}^{}", self.point.to_string(), self.kind.to_string())
    }
}

#[derive(Debug, Clone, Serialize, Deserialize, Eq, PartialEq)]
pub struct ExtCall {
    pub path: Subst<Tw<String>>,
    pub method: ExtMethod,
}

impl ExtCall {
    pub fn new(method: ExtMethod, path: Subst<Tw<String>>) -> Self {
        Self { method, path }
    }
}

impl ToString for ExtCall {
    fn to_string(&self) -> String {
        format!("Ext<{}>{}", self.method.to_string(), self.path.to_string())
    }
}

#[derive(Debug, Clone, Serialize, Deserialize, Eq, PartialEq)]
pub struct CmdCall {
    pub path: Subst<Tw<String>>,
    pub method: CmdMethod,
}

impl CmdCall {
    pub fn new(method: CmdMethod, path: Subst<Tw<String>>) -> Self {
        Self { method, path }
    }
}

impl ToString for CmdCall {
    fn to_string(&self) -> String {
        format!("Cmd<{}>{}", self.method.to_string(), self.path.to_string())
    }
}

#[derive(Debug, Clone, Serialize, Deserialize, Eq, PartialEq)]
pub struct HypCall {
    pub path: Subst<Tw<String>>,
    pub method: HypMethod,
}

impl HypCall {
    pub fn new(method: HypMethod, path: Subst<Tw<String>>) -> Self {
        Self { method, path }
    }
}

impl ToString for HypCall {
    fn to_string(&self) -> String {
        format!("Hyp<{}>{}", self.method.to_string(), self.path.to_string())
    }
}

#[derive(Debug, Clone, Serialize, Deserialize, Eq, PartialEq)]
pub struct HttpCall {
    pub path: Subst<Tw<String>>,

    pub method: HttpMethod,
}

impl HttpCall {
    pub fn new(method: HttpMethod, path: Subst<Tw<String>>) -> Self {
        Self { method, path }
    }
}

impl ToString for HttpCall {
    fn to_string(&self) -> String {
        format!("Http<{}>{}", self.method.to_string(), self.path.to_string())
    }
}

impl ValueMatcher<HttpMethod> for HttpMethod {
    fn is_match(&self, found: &HttpMethod) -> Result<(), ()> {
        if *self == *found {
            Ok(())
        } else {
            Err(())
        }
    }
}

impl ToString for CallKind {
    fn to_string(&self) -> String {
        match self {
            CallKind::Ext(msg) => msg.to_string(),
            CallKind::Http(http) => http.to_string(),
            CallKind::Cmd(cmd) => cmd.to_string(),
            CallKind::Hyp(sys) => sys.to_string(),
        }
    }
}

#[derive(
    Debug,
    Clone,
    Eq,
    PartialEq,
    strum_macros::Display,
    strum_macros::EnumString,
    Serialize,
    Deserialize,
)]
pub enum SubstanceFormat {
    #[strum(serialize = "json")]
    Json,
    #[strum(serialize = "image")]
    Image,
}

pub type MapPattern = MapPatternDef<Point>;
pub type MapPatternCtx = MapPatternDef<PointCtx>;
pub type MapPatternVar = MapPatternDef<PointVar>;

#[derive(Debug, Clone, Serialize, Deserialize, Eq, PartialEq)]
pub struct MapPatternDef<Pnt> {
    pub required: HashMap<String, ValuePattern<SubstancePatternDef<Pnt>>>,
    pub allowed: ValuePattern<SubstancePatternDef<Pnt>>,
}

impl<Pnt> Default for MapPatternDef<Pnt> {
    fn default() -> Self {
        MapPatternDef {
            required: Default::default(),
            allowed: ValuePattern::Any,
        }
    }
}

impl<Pnt> ToString for MapPatternDef<Pnt> {
    fn to_string(&self) -> String {
        "Map?".to_string()
    }
}

impl<Pnt> MapPatternDef<Pnt> {
    pub fn new(
        required: HashMap<String, ValuePattern<SubstancePatternDef<Pnt>>>,
        allowed: ValuePattern<SubstancePatternDef<Pnt>>,
    ) -> Self {
        MapPatternDef { required, allowed }
    }

    pub fn empty() -> Self {
        Self {
            required: HashMap::new(),
            allowed: ValuePattern::None,
        }
    }

    pub fn any() -> Self {
        Self {
            required: HashMap::new(),
            allowed: ValuePattern::Any,
        }
    }

    pub fn is_match(&self, map: &SubstanceMap) -> Result<(), ()> {
        // if Any keys are allowed then skip
        for (key, payload) in &map.map {
            if !self.required.contains_key(key) {
                match &self.allowed {
                    ValuePattern::Any => {}
                    ValuePattern::None => {
                        return Err(());
                    }
                    ValuePattern::Pattern(pattern) => {
                        pattern.is_match(payload)?;
                    }
                }
            }
        }

        // now make sure all required are present and meet constraints
        for (key, constraint) in &self.required {
            if !map.contains_key(key) {
                return Err(());
            }
            constraint.is_match(
                &map.get(key)
                    .expect("expected map element after testing for it"),
            )?;
        }

        Ok(())
    }
}

#[derive(Debug, Clone, Serialize, Deserialize)]
pub struct SubstanceRef<PAYLOAD_CLAIM, PAYLOAD_PATTERN> {
    pub claim: PAYLOAD_CLAIM,
    pub pattern: PAYLOAD_PATTERN,
}

#[derive(Debug, Clone, Serialize, Deserialize, Eq, PartialEq)]
pub struct MultipartForm {
    data: String,
}

impl TryInto<HashMap<String, String>> for MultipartForm {
    type Error = SpaceErr;

    fn try_into(self) -> Result<HashMap<String, String>, Self::Error> {
        let map: HashMap<String, String> = serde_urlencoded::from_str(&self.data)?;
        Ok(map)
    }
}

impl ToRequestCore for MultipartForm {
    type Method = HttpMethod;

    fn to_request_core(self) -> DirectedCore {
        let mut headers = HeaderMap::new();

        headers.insert(
            "Content-Type".to_string(),
            "application/x-www-form-urlencoded".to_string(),
        );

        DirectedCore {
            headers,
            method: HttpMethod::Post.into(),
            uri: Url::parse("/").unwrap(),
            body: Substance::MultipartForm(self),
        }
    }
}

impl MultipartForm {
    pub fn data(&self) -> &str {
        self.data.as_str()
    }
}

impl Deref for MultipartForm {
    type Target = str;

    fn deref(&self) -> &Self::Target {
        self.data()
    }
}

impl ToString for MultipartForm {
    fn to_string(&self) -> String {
        self.data.clone()
    }
}

pub struct MultipartFormBuilder {
    map: HashMap<String, String>,
}

impl MultipartFormBuilder {
    pub fn new() -> Self {
        Self {
            map: HashMap::new(),
        }
    }

    pub fn put<S: ToString>(&mut self, key: S, value: S) {
        self.insert(key.to_string(), value.to_string());
    }

    pub fn get<S: ToString>(&self, key: S) -> Option<&String> {
        self.map.get(&key.to_string())
    }
}

impl Deref for MultipartFormBuilder {
    type Target = HashMap<String, String>;

    fn deref(&self) -> &Self::Target {
        &self.map
    }
}

impl DerefMut for MultipartFormBuilder {
    fn deref_mut(&mut self) -> &mut Self::Target {
        &mut self.map
    }
}

impl MultipartFormBuilder {
    pub fn build(self) -> Result<MultipartForm, SpaceErr> {
        let data = serde_urlencoded::to_string(&self.map)?;
        Ok(MultipartForm { data })
    }
}

pub type Bin = Arc<Vec<u8>>;