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use ahash::AHashMap;

use super::CP01::RuleCP01;
use crate::core::config::Value;
use crate::core::rules::base::{CloneRule, ErasedRule, LintResult, Rule};
use crate::core::rules::context::RuleContext;
use crate::core::rules::crawlers::{Crawler, SegmentSeekerCrawler};

#[derive(Clone, Debug)]
pub struct RuleCP04 {
    base: RuleCP01,
}

impl Default for RuleCP04 {
    fn default() -> Self {
        Self {
            base: RuleCP01 {
                skip_literals: false,
                exclude_parent_types: &[],
                ..Default::default()
            },
        }
    }
}

impl Rule for RuleCP04 {
    fn load_from_config(&self, config: &AHashMap<String, Value>) -> ErasedRule {
        RuleCP04 {
            base: RuleCP01 {
                capitalisation_policy: config["capitalisation_policy"].as_string().unwrap().into(),
                ..Default::default()
            },
        }
        .erased()
    }

    fn name(&self) -> &'static str {
        "capitalisation.literals"
    }

    fn description(&self) -> &'static str {
        "Inconsistent capitalisation of boolean/null literal."
    }

    fn eval(&self, context: RuleContext) -> Vec<LintResult> {
        self.base.eval(context)
    }

    fn crawl_behaviour(&self) -> Crawler {
        SegmentSeekerCrawler::new(["null_literal", "boolean_literal"].into()).into()
    }
}

#[cfg(test)]
mod tests {
    use pretty_assertions::assert_eq;

    use super::RuleCP04;
    use crate::api::simple::fix;
    use crate::core::rules::base::Erased;

    #[test]
    fn test_fail_inconsistent_boolean_capitalisation() {
        let fail_str = "SeLeCt true, FALSE, NULL";
        let fix_str = "SeLeCt true, false, null";

        let actual = fix(fail_str.into(), vec![RuleCP04::default().erased()]);
        assert_eq!(fix_str, actual);
    }
}